eChapters

Routine maintenance forms the foundation of effective and sustainable aquarium care. It encompasses a range of scheduled activities designed to maintain cleanliness, chemical stability, and a healthy environment for aquatic life. Whether managing a small home tank or a large public display, failure to perform regular upkeep can cause water quality to deteriorate quickly, potentially leading to stress,
illness, or even the death of fish and plants.
Common maintenance routines include partial water changes—typically 10–30% on a weekly or biweekly basis—along with cleaning the substrate and tank decorations to remove waste and leftover food. Filters should be regularly inspected and cleaned to maintain proper flow and filtration. Additionally, both the inner and outer surfaces of the glass should be cleaned to eliminate algae and ensure clear viewing.
Water testing is another critical aspect of maintenance. Key parameters like ammonia, nitrite, nitrate, pH, temperature, and oxygen levels should be routinely checked using appropriate test kits. Identifying imbalances early helps prevent serious water quality issues.
Health monitoring of fish and plants is also important. Watching for changes in behavior, eating habits, color, or signs of distress enables early diagnosis and treatment. For planted tanks, this might include trimming overgrowth, replanting, or adding fertilizers as needed.
Sticking to a consistent maintenance schedule not only keeps the tank clean but also extends the life of your aquarium’s inhabitants and equipment. It supports a stable and thriving aquatic environment where natural biological cycles can operate effectively.

Introduction
Informative speaking is a powerful form of communication that seeks to educate an audience on a particular topic, idea, or issue. Unlike persuasive or entertaining speech, the primary purpose of informative speaking is to provide knowledge and clarity. It equips listeners with valuable insights, broadening their understanding and perspectives. Mastery of informative speaking is crucial in educational, professional, and public contexts, as it fosters informed decision-making and nurtures curiosity.
The Purpose of Informative Speaking
The primary purpose of informative speaking is to educate an audience by sharing knowledge, clarifying concepts, or explaining processes. It seeks to enhance understanding rather than to persuade or entertain. Below are the core purposes of informative speaking:
1. To Educate
Informative speaking helps an audience gain a deeper understanding of a topic by presenting facts, data, and research. This could involve teaching something new, offering insights into complex issues, or updating the audience on current trends.
Example: A presentation on the basics of block-chain technology explains how it works and its potential applications in finance and beyond.

Introduction
Speaking to entertain is both an art and a skill. Unlike informative or persuasive speeches, entertaining speaking prioritizes engagement, emotion, and enjoyment, aiming to captivate an audience while delivering a memorable experience. This form of speaking is essential in various contexts be it a wedding toast, a comedy performance, or a motivational talk.
In this chapter, we will explore the elements, techniques, and considerations that make an entertaining speech impactful. From crafting compelling stories to mastering delivery, this chapter provides a comprehensive guide for those seeking to charm and amuse their listeners.
The Purpose of Entertaining Speaking
Entertaining speaking is a unique form of communication designed to captivate an audience while eliciting positive emotions such as joy, amusement, and inspiration. It goes beyond mere information delivery, aiming to create a shared experience that leaves the audience feeling uplifted and engaged. Below are the primary purposes of entertaining speaking:
1. Engagement
The foremost purpose of entertaining speaking is to grab and hold the audience’s attention. Unlike other types of speeches, which might prioritize educating or persuading, an entertaining speech creates an immersive experience that keeps the audience invested from start to finish. Effective speakers achieve this through humor, storytelling, or charismatic delivery.

In natural farming, feed supplements and probiotics made from organic and locally available materials are essential for improving animal health, digestion,and immunity. These methods provide a sustainable alternative to synthetic additives and antibiotics, aligning with eco friendly farming principles.
Natural feed additives consist of mineral-rich and herbal materials that enhance nutritional intake. Common sources include rock salt, powdered eggshells, bone meal, and herbal preparations made from plants like neem, turmeric, ginger, and ashwagandha. These supplements are valuable in addressing nutritional deficiencies in standard fodder, thereby supporting various physiological functions such as metabolism, reproduction, and disease resistance.
Probiotics, which are beneficial microorganisms, help establish and maintain a healthy gut environment in livestock. They facilitate better digestion, improve nutrient absorption, and prevent harmful bacteria from taking hold in the digestive system. Natural farming relies on probiotic-rich preparations such as Jeevamrit, Amritpani, and fermented cattle urine, all of which contain lactic acid bacteria, yeasts, and other helpful microbes.
Benefits of feeding probiotics are given below:
• Enhanced digestion of fibrous feed, improving energy use.
• Strengthened immune system, reducing dependence on antibiotics.
• Prevention of common digestive issues like diarrhea.
• Increased growth and milk production in livestock.
Homemade probiotic mixtures are commonly prepared by fermenting natural ingredients such as cow dung, jaggery, and fresh cow urine under anaerobic conditions. These cost-effective and eco-conscious preparations fit seamlessly within the framework of natural farming.

Goats and sheep play a vital role in natural farming systems due to their adaptability, efficient utilization of feed, and importance in sustaining rural livelihoods. Proper feed management is key to ensuring their health, reproductive success, and overall productivity, all while reducing reliance on external inputs. In natural farming, the diet of goats and sheep mainly consists of locally available grasses, shrubs, tree foliage, crop residues, and forage legumes. Fodder trees such as subabul, moringa, ber, and neem serve as valuable sources of protein and micronutrients. To address seasonal shortages, farmers establish fodder reserves and adopt agroforestry systems that combine tree planting with crop cultivation.
Goats, being browsers, thrive on a wide variety of vegetation including tough shrubs and woody plants, many of which contain medicinal secondary compounds. Sheep, on the other hand, prefer grazing on grasses and herbs, making careful pasture management essential to prevent nutrient deficiencies.
Locally sourced feed supplements like oilseed cakes, pulses, and leftover kitchen food help improve protein and energy intake. Mineral blocks enriched with salt, calcium, phosphorus, and trace minerals aid in proper skeletal development and reproductive health.

Entrepreneurship: the Concept and Definitions
Entrepreneurship is the capability to improve, arrange and continue a business enterprise, along with any of its uncertainties to make a profit. We can say an example of entrepreneurship is the starting of a new business, a new venture with some challenges and specific objectives.
Meaning of Entrepreneur
An entrepreneur is defined as one person who has the ability and desire to establish, administer and succeed in a startup venture along with the risk entitled to it, to make profits. The best example of entrepreneurship is the starting of a new business venture. Entrepreneurs are often known as a source of new ideas or innovators and bring new ideas in the market by replacing old ones with a new invention.
According to Cole (1949), an Entrepreneur represents an individual or a group of individuals, who conceive, initiate and maintain for a sufficiently long period a social institution which produces economic goods or to put it differently.
Communication: Communication is an act by which one person gives to or receives from another person, the information about the person’s need, desires and perceptions. Knowledge or affective states: Communication is an act by which one person gives to or receives from another person, the information about the person’s need, desires, and perceptions. Knowledge or affective states.

In the landscape of social advertising, large-format media like hoardings (billboards) and wall paintings offer unique opportunities to create high-impact, place-based campaigns that can transform urban and rural environments into powerful canvases for social change. These supersized communication platforms command attention through their sheer scale and integration with the physical environment, creating opportunities for messaging that digital and smaller print formats simply cannot match.
This chapter explores the distinctive considerations, techniques, and best practices for designing social advertisements specifically for hoardings and wall paintings. We’ll examine how these formats differ from other advertising media, how to leverage their unique characteristics, and how to navigate the practical and creative challenges they present. Whether you’re planning a city-wide campaign using commercial billboards or a grassroots initiative using community wall paintings, understanding the specific demands of these formats is essential for creating effective social messaging.
Understanding the Medium
Hoardings (Billboards)
Hoardings, commonly known as billboards in many countries, are large outdoor advertising structures typically found alongside highways, on buildings, or in other high-visibility locations. Key characteristics include

Clouds, those ever-present features of our sky, are more than just aesthetically pleasing; they are fundamental components of earth‘s weather and climatesystems. This chapter, „cloud formation and classification,“ will embark on a journey to understand the fascinating processes that lead to their creation and the systematic ways in which they are categorized.
We will begin by exploring the essential ingredients for cloud formation: the presence of water vapor in the atmosphere, the availability of condensation or ice nuclei, and the crucial mechanism of air cooling. We will delve into how rising air parcels cool adiabatically, reaching saturation and allowing water vapor to condense or deposit into the myriad forms we recognize as clouds. Following the understanding of their genesis, we will navigate the internationally recognized system of cloud classification. This system, primarily based on a cloud’s altitude, appearance, and the processes that formed it, provides a common language for meteorologists and observers worldwide. We will learn to identify the main cloud types – high, mid-level, low, and vertically developing – and their associated characteristics, from the wispy cirrus to the towering cumulonimbus.
Furthermore, we will touch upon the significance of different cloud types in indicating current weather conditions and forecasting future weather. The appearance and evolution of clouds can offer valuable clues about atmospheric stability, moisture content, and the likelihood of precipitation. By the end of this chapter, you will gain a comprehensive understanding of how clouds form the diverse array of cloud types that grace our skies, and their importance in the broader context of atmospheric science. Let’s unlock the secrets held within these visible masses of water and ice suspended in our atmosphere.

The term “chelate” comes from the Greek word “chel,” meaning “claw,” indicating that the element is tightly held or clawed by the ligand. The term was coined by Morgan and Drew in 1920, defining it as a chemical compound in the form of a heterocyclic ring with a metal ion attached by coordinate bonds to at least two non-metal ions, known as chelation. A chelate is a type of mineral complex, which is a mixture of a mineral and an organic compound like a protein or polysaccharide. Chelation refers to the bond formed between a metal ion (mineral) and a ligand (protein or amino acid chelating agent). Chelates are created by reacting a mineral salt with an enzymatically prepared mixture of amino acids and small peptides under controlled conditions. The ligand binds the metal at multiple points, forming a ring structure with the mineral, resulting in a chelate.
In animal feed, chelated minerals, such as iron, manganese, cobalt, copper, and zinc, are commonly used to enhance bioavailability and support metabolic functions. These trace elements are transitional elements on the Periodic Table, forming stable complexes or chelates due to their ability to form coordinate covalent bonds.
The primary goal of chelates is to improve mineral absorption in animals during periods of high nutritional demand, such as pregnancy, lactation, weaning, and environmental or disease stress. Chelates have been studied for their effects on immunity, reproductive performance, and overall herd health. To maximize mineral absorption, chelated compounds should be stable in the rumen.
Chelates are stable, electrically neutral complexes that protect trace minerals from chemical reactions during digestion, ensuring their availability to the animal. Chelated minerals are used to increase bioavailability and uptake, reaching the plasma intact and separating at the site of action. They can replace a portion of inorganic minerals in animal diets and are suitable for all species. Soluble chelated trace minerals are designed for use in drinking water supplies.

Ruminants possess the remarkable ability to efficiently utilize non-protein nitrogen (NPN) substances as substitutes for protein, thanks to the presence of microbes in their rumen. These substances contain essential amino acids, which are crucial for the proper growth and development of animals. The microbes in the rumen play a significant role in synthesizing these essential amino acids from NPN sources, making them readily absorbable by the ruminant’s digestive system. In fact, research has demonstrated that rumen bacteria prefer utilizing amides, amino acids, and ammonium salts for energy production and growth, rather than proteins. This utilization of NPN substances is essential for meeting the protein requirements of ruminants and ensuring their overall health and productivity. Consequently, incorporating NPN-rich feeds into ruminant diets can be a cost-effective alternative to traditional protein sources.
Definition: Non-protein-nitrogenous (NPN) substances refer to feedstuffs that contain nitrogen in a form other than proteins or peptides. In fresh herbages, up to 30% of the total nitrogen content may consist of NPN substances.

Feed is a significant expense in raising small ruminants, accounting for 60% or more of total production costs. Nutrition is crucial for flock reproduction, milk production, and lamb and kid growth. Late gestation and lactation are critical periods for ewe and doe nutrition, with lactation having the highest nutritional demands. Nutrition levels determine the growth rate of lambs and kids, particularly protein requirements. Animals on inadequate diets are more prone to diseases and fail to reach their full genetic potential.
Small ruminants require energy, protein, vitamins, minerals, fiber, and water for optimal health. Energy is often the most limiting nutrient, while protein is the most costly. Imbalances in vitamins and minerals can affect animal performance and health. Fiber is essential for a healthy rumen environment and digestion. Water, though inexpensive, is often overlooked.
Feed intake percentage varies based on the animal’s size, with smaller animals needing a higher intake proportionally. Maintenance requirements increase with activity levels, environmental conditions, and life stages such as pregnancy, lactation, and growth. Sheep and goats can meet their nutritional needs with various feed sources as long as requirements are met. Feeding programs should consider animal needs, feed availability, and nutrient costs.
Comparative Feeding Behaviour and Digestive Physiology in Goats and Sheep
1. Goats excel in utilizing cell wall-rich and nitrogen-poor forages compared to sheep and cattle.
2. Goats have a longer retention time of feed in the digestive tract, higher cellulolytic bacteria concentration in the rumen, and efficient blood urea recycling.
3. In harsh conditions, goats consume less water and more dry matter than sheep.

Abstract
Transgenic organisms are defined as being introduced artificially with a transgene and incorporated stably into their genomes. There are various aquatic organisms in which the trans-genesis process has been applied like fish, crustaceans, molluscs, etc. Presently scientists can transfer a particular gene for a desirable and beneficial trait from one organism to another with more precision and in less time than traditional breeding. To date, over thirty-five species have been genetically engineered in laboratories. The transgenic fish are efficient feed converters. Salmon is the first transgenic fish that was used as food. Various techniques are involved in aquatransgenesis. They include – microinjection, electroporation, particle gun bombardment, liposome-mediated gene transfer and so on (setac. onlinelibrary.wiley.com). Through all these techniques a fish is genetically transformed so that it has desirable and beneficial trait. Numerous significant biotechnological uses for fish transgenesis are anticipated to be beneficial across a wide range of industries. The majority of genetically engineered fish serve purposes in fundamental studies of genetics and development. Various research teams have been creating genetically modified zebrafis to identify aquatic pollution. The lab that created GloFish initially aimed for them to alter their colour in response to pollutants, acting as environmental indicators. Transgenic fish have an improved growth rate than their nontransgenic counterparts. Moreover, they are disease-resistant and can be used as models for performing various scientific experiments in the field of environmental toxicology and biotechnology. All these beneficial traits are making transgenic fish more valuable in the biotechnological field. To fully realize the potential of transgenic fish technology in aquaculture, certain ethical and ecological issues must be scientifically resolved.
Keywords: Aqua-transgenesis, Genetically modified organisms, Microinjection, Biotechnological potential

Atmospheric temperature refers to the measure of the warmth or coldness of the air at different levels within the Earth’s atmosphere. It’s not a uniform value but varies significantly with altitude and location.
More detailed descrption of atmospheric temperature is as follows:
• Different Layers, Different Temperatures: The Earth’s atmosphere is divided into several layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere), and each layer has a distinct temperature profile. For example, the troposphere (where we live and where weather occurs) generally gets colder with increasing altitude, while the stratosphere above it gets warmer due to the absorption of ultraviolet radiation by the ozone layer.
• Surface Temperature: When people talk about the “temperature” in daily life, they usually refer to the temperature of the air near the Earth’s surface, which is measured at meteorological stations.
• Global Average: Climatologists also use the concept of a “global temperature,” which is an average of temperature measurements taken at the surface, near-surface, or in the troposphere across the entire planet.

Introduction
The rapid expansion of global aquaculture, driven by the increasing demand for high-quality, protein-rich seafood, has necessitated significant advancements in feed production. Historically, fishmeal and fish oil—derived from wild-caught fish—have been the cornerstone ingredients in aquafeeds, providing essential proteins and lipids for the optimal growth, health, and productivity of farmed species. However, the over-reliance on these finite marine resources has raised a host of environmental, economic, and ethical challenges. The depletion of wild fish stocks due to overfishing, habitat degradation, and climate change threatens the sustainability of global fisheries. Moreover, the volatility in the cost and availability of fishmeal and fish oil has placed increasing economic strain on the aquaculture industry, which is projected to grow substantially in the coming decades. These concerns have spurred the search for alternative, sustainable feed ingredients that can reduce dependence on wild-caught fish while maintaining or even improving the nutritional value and health outcomes for farmed fish. This chapter explores the ongoing evolution of sustainable feed ingredients and their crucial role in shaping the future of aquaculture. It highlights innovative approaches, such as plant-based proteins, insect meals, and microbial sources of omega-3 fatty acids, which offer promising solutions to enhance the sustainability of aquafeeds. By addressing both the environmental impact and economic viability of aquaculture feed production, these alternatives represent a pivotal shift towards a more responsible, resilient, and efficient aquaculture industry poised to meet the growing global demand for seafood.

1. Introduction
Aquaculture, the farming of fish and other aquatic organisms, has experienced exponential growth over the last few decades, becoming one of the fastest-growing food production sectors globally. This expansion is driven by the rising global demand for seafood, fueled by population growth, increased per capita consumption, and the recognition of fish as a healthy and nutrient-rich food source. According to the Food and Agriculture Organization (FAO), aquaculture now supplies more than half of the world’s fish for human consumption, a significant leap from the 1980s when it contributed only a fraction of global seafood production. However, this rapid growth poses challenges, particularly with respect to sustainable feed production.
One of the primary concerns in aquaculture is the reliance on fishmeal, a high-protein feed ingredient traditionally sourced from small, wild-caught fish species such as anchovies, sardines, and menhaden. Fishmeal is rich in essential nutrients, particularly amino acids, omega-3 fatty acids, and micronutrients, making it an ideal component for aquafeeds. However, its dependence on wild fish stocks has raised sustainability concerns, as the continuous harvesting of these species can lead to overfishing, biodiversity loss, and ecosystem degradation. Moreover, the rising demand for fishmeal in aquafeeds, coupled with finite fishery resources, has driven up its price, making it less economically viable for aquaculture operations, especially for small-scale farmers.

1. Introduction
Aquaculture is one of the most rapidly expanding sectors in food production, making significant contributions to global food security and the economy. As natural fisheries resources are depleted, aquaculture has become an essential source of protein and employment for millions worldwide. With an increasing demand for seafood, the intensification of aquaculture systems has become necessary. This intensification, characterized by high stocking densities, increased fish production, and automation, has introduced a range of challenges that negatively impact the health and well-being of farmed fish and other aquatic species.
1.1 Stress in Aquaculture Systems
Stress is an inevitable part of aquaculture, particularly in intensive farming systems where fish are exposed to multiple environmental, biological, and anthropogenic stressors. Stress refers to a physiological condition where the normal homeostasis of an organism is disrupted due to external stimuli. In aquaculture, stress can arise from various factors, including changes in water quality parameters (such as dissolved oxygen, temperature, and pH), overcrowding, transportation, handling, and exposure to pathogens. The physiological response to stress can lead to a cascade of negative outcomes, including suppressed immunity, impaired growth, decreased reproductive success, and increased susceptibility to disease. If not adequately managed, stress can cause significant economic losses, affecting the sustainability and profitability of aquaculture operations.

1. Introduction
Omega-3 fatty acids are a vital group of polyunsaturated fatty acids (PUFAs) recognized for their complex chemical structure, which is characterized by multiple double bonds within their hydrocarbon chains. This unique arrangement not only influences their physical and biochemical properties but also underpins their essential roles in various biological processes across a wide range of organisms. Omega-3 fatty acids are categorized into three primary types: alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). While ALA is predominantly found in plant sources, such as flaxseeds, chia seeds, and walnuts, EPA and DHA are primarily sourced from marine organisms, particularly fish and algae.
1.1 Importance of Omega-3 Fatty Acids
1.1.1 Nutritional Significance in Aquatic Organisms
In fish nutrition, omega-3 fatty acids are indispensable for promoting optimal growth, development, and overall health. These essential nutrients contribute to a multitude of physiological processes, including:
1. Cellular Structure and Function: Omega-3 fatty acids are integral components of cell membranes, influencing their fluidity and permeability. This is crucial for maintaining cellular integrity and facilitating the transport of nutrients and signaling molecules across membranes.

Introduction
Psychotherapeutic measures provide a treatment approach to help a person identify and alter disturbing emotions, thought and behaviors.
They include targeted strategies that are used to deal and alleviate mental disturbances. Contemporary approaches are customized techniques to effectively and efficiently delivering solutions to the problems and their manifestations. The history of treatment throws light upon several conventional approaches to deal with multiple disorders. The following discussion provides the insight into the understanding of these approaches: -
1. Psychodynamic Therapy (PDT)
Psychodynamic therapy was the norm in psychiatric practice in the early 20th century. It evolved primarily from Sigmund Freud’s psychoanalytic ideas, with significant contributions from Karl Jung, Anna Freud and Melanie Klein, among others. The main emphasis is on how early experiences shape and build the psychological systems that are mostly responsible for the unconscious. Finding, exposing and resolving suppressed tensions from previous interactions that inadvertently surface in current interpersonal interactions and give rise to maladaptive behavioral patterns is the aim of psychodynamic therapy. Free association and dream analysis are two methods used to investigate the unconscious drive. The patient is urged to express himself freely and without restraint during free interaction. Using “active listening,” the therapist searches for references or patterns that connect to ongoing developmental and interpersonal issues. This can aid in understanding the unconscious process. The application of dream

The typical way of living that reflects one’s attitude and values is called lifestyle of the person. A person’s lifestyle is shaped by one's specific geographic, economic, political, cultural and religious context. A lifestyle is a means of forging a sense of self and to create cultural symbols that resonate with the personal identity. According to WHO lifestyle is “a specific type of behaviour that can reduce disease and early death by personal physical, mental and social interaction”.
Lifestyle refers to the interests, opinions, behaviors and orientations of an individual, group or culture. The term was introduced by Austrian psychologist Alfred Adler in his 1929 book, The Case of Miss R., where he described it as “a person’s basic character established early in childhood.” Since 1961, the broader sense of lifestyle as a “way or style of living” has been recognized. Lifestyle is influenced by both tangible and intangible factors. Tangible factors include demographic variables, such as an individual’s demographic profile, while intangible factors involve psychological aspects like personal values, preferences and outlooks.
Lifestyles vary significantly between rural and urban environments. Even within urban areas, the nature of the neighborhood affects the lifestyles available to residents, influenced by factors like affluence and proximity to natural and cultural environments. For instance, coastal areas often have a surf culture or lifestyle. A lifestyle typically reflects an individual’s attitudes, way of life, values or worldview. It serves as a means of forging a sense of self and creating cultural symbols that resonate with personal identity. However, not all aspects of a lifestyle are voluntary. Social and technical systems can limit the lifestyle choices available to individuals and the symbols they can project to others and themselves.

Every science has its own language. Economics has its own language. There are certain terms which are used in a special sense in economics. So we must understand the meaning of some basic concepts in the field of economics are discussed below.
2.1. Goods
Anything that can satisfies a human want is called a good in economics. For example: Foodgrain, pulse, oilseeds, machinery, seeds, fertilizer, pen, book, etc.
2.2. Services
A service refers to an act or performance that one party provides to another. Services are characterized by their intangible, non-material nature, as well as their inseparability, variability, and perishability. Examples include the services offered by doctors, teachers, lawyers, engineers, and laborers.

1. Introduction
Aquaculture, the farming of aquatic organisms, has grown rapidly over the past few decades to meet the rising global demand for seafood. As wild fish stocks continue to decline due to overfishing and environmental pressures, aquaculture is playing a crucial role in food production. However, like other forms of agriculture, aquaculture faces significant challenges, with feed management being one of the most critical. Feed represents the single largest operational cost in aquaculture, often accounting for 50-70% of the total production expenses. Efficient feed utilization is therefore central to the economic viability of aquaculture operations. Yet, traditional feeding methods are often inefficient, leading to feed wastage, nutrient pollution in water bodies, and suboptimal growth in farmed fish.
In conventional aquaculture, feed is typically dispensed at set intervals and in quantities based on estimations of fish appetite and growth requirements. However, this approach has several inherent inefficiencies. Overfeeding or underfeeding is common due to the lack of real-time monitoring and precision. Excess feed that remains uneaten sinks to the bottom of ponds or cages, decomposing and contributing to nutrient pollution. This not only represents a direct economic loss but also creates environmental problems such as eutrophication, which can lead to algal blooms, oxygen depletion, and poor water quality. On the other hand, underfeeding can result in stunted growth, poor health, and reduced productivity of fish. Both overfeeding and underfeeding, therefore, represent significant barriers to achieving sustainability and profitability in aquaculture.

1. Introduction
Aquaculture has become one of the most significant contributors to global food production, responding to the escalating demand for fish and seafood. As a rapidly growing industry, aquaculture plays a crucial role in ensuring food security, nutrition, and livelihoods. According to the Food and Agriculture Organization (FAO), aquaculture production has expanded at an average annual rate of 5.3% over the past 30 years. This growth has positioned aquaculture as a primary source of protein, essential fatty acids, and micronutrients for billions of people worldwide. Despite its rapid expansion, the aquaculture industry faces significant environmental challenges, primarily due to the large amounts of organic waste generated by fish farming. This waste includes uneaten feed, fish excreta, and the remnants of dead organisms, all of which can contribute to nutrient pollution when not properly managed. Nutrient pollution is associated with serious ecological consequences such as eutrophication, where excess nutrients lead to algal blooms, oxygen depletion, and the degradation of aquatic habitats. These environmental issues threaten biodiversity and undermine the sustainability of aquaculture systems.
Nutrient recycling has emerged as an innovative and sustainable solution to address these challenges. This approach transforms waste into valuable resources, particularly in the form of nutrient-rich feed ingredients. By harnessing nutrients such as nitrogen, phosphorus, and organic matter from aquaculture waste, nutrient recycling not only reduces environmental impact but also improves the economic efficiency of aquaculture operations. Nutrient recycling promotes a circular economy model, where waste from fish farming is reintroduced into the system, closing nutrient loops and reducing the reliance on external inputs.

1. Introduction
Reproduction is one of the most critical processes in the life cycle of fish, directly influencing population sustainability, species survival, and aquaculture productivity. Successful reproduction hinges on several interconnected factors, including environmental conditions (such as water quality, temperature, and photoperiod), genetic predisposition, physiological health, and, most importantly, nutrition. Among these, nutrition has a profound and direct influence on reproductive performance in both wild and cultured fish populations.
In aquaculture, the reproductive success of broodstock—mature fish that produce offspring—is paramount to the production of high-quality fry (young fish) and larvae, which in turn affects the overall yield and profitability of fish farms. Ensuring that broodstock are provided with an optimal diet tailored to their reproductive needs can significantly enhance fecundity (the number of eggs produced), fertilization rates, and the viability of offspring. Proper nutrition not only contributes to better gamete (egg and sperm) quality but also plays a vital role in boosting the health, vitality, and resilience of both broodstock and their progeny.
Nutritional deficiencies or imbalances during the reproductive phase can lead to a variety of problems, such as reduced spawning frequency, poor egg and sperm quality, low hatching rates, and poor larval survival. Conversely, well-nourished broodstock with access to essential nutrients are more likely to produce high-quality eggs and sperm that result in healthier, more viable offspring.

1. Introduction
The aquaculture industry has experienced unprecedented growth in recent decades, emerging as a critical sector in global food production. According to the Food and Agriculture Organization (FAO), aquaculture is the fastestgrowing food production system worldwide, with an annual growth rate of approximately 5-6%. This remarkable expansion is primarily driven by the increasing demand for seafood, fueled by factors such as population growth, urbanization, and changing dietary preferences towards healthier protein sources. As seafood consumption continues to rise, the aquaculture sector faces the challenge of producing fish that meet consumer demand while ensuring sustainable practices that protect marine ecosystems.
A key component of fish production is nutrition, which directly influences fish growth, health, and overall productivity. Among the essential nutrients required by fish, lipids play a pivotal role in providing energy, supporting metabolic functions, and delivering vital fatty acids that are crucial for growth and development. Traditionally, fishmeal and fish oil derived from wild-caught fish have served as the primary lipid sources in aquaculture feeds. These sources are rich in high-quality protein and essential omega-3 fatty acids (n-3 PUFA), which are crucial for the optimal health and growth of various fish species.

1. Introduction
Feed formulation for carnivorous fish species is a pivotal aspect of aquaculture that significantly impacts growth performance, health, and the sustainability of production systems. As the global demand for seafood continues to rise, driven by population growth and changing dietary preferences, optimizing feed formulations becomes increasingly essential for aquaculture operators. Efficient feed formulations are crucial not only for enhancing fish growth rates and feed conversion efficiency but also for ensuring the economic viability of fish farming operations.
Carnivorous fish species, such as salmon, trout, tilapia, and catfish, have specific nutritional requirements that must be met to achieve optimal performance. These requirements typically include high-quality protein sources, essential fatty acids, vitamins, and minerals. The formulation of diets that adequately supply these nutrients while minimizing costs is a complex challenge that aquaculture practitioners face. Traditional feed ingredients, including fishmeal and fish oil, are often expensive and subject to supply fluctuations, prompting a need for innovative alternatives that can provide similar nutritional profiles at a lower cost.
This chapter delves into the intricacies of feed formulation for carnivorous fish species. It begins by outlining the nutritional requirements specific to these fish, emphasizing the importance of protein and fatty acid sources. The chapter then discusses various feed ingredients, both traditional and alternative, that can be used to formulate cost-effective diets without compromising fish health and performance. Additionally, it addresses the challenges associated with formulating diets for carnivorous species, including ingredient variability, palatability, and the potential for anti-nutritional factors.

1. Introduction
Aquaculture has emerged as one of the fastest-growing sectors of food production worldwide, driven by the increasing demand for fish and seafood as essential sources of protein, healthy fats, and micronutrients. As wild fisheries face overexploitation and environmental degradation, aquaculture is seen as a solution to meet the growing global need for seafood. However, the sustainability of aquaculture itself is under scrutiny due to its reliance on traditional feed ingredients, particularly fishmeal and fish oil derived from wild-caught fish. Fishmeal has long been considered an ideal protein source for aquafeeds because of its excellent amino acid profile, high digestibility, and essential fatty acid content. Yet, the continued use of fishmeal places immense pressure on wild fish stocks, particularly small pelagic species that are harvested specifically for fishmeal production.
The overexploitation of these fish stocks raises significant ecological concerns, threatening marine biodiversity and destabilizing food webs. The reliance on fishmeal is also economically challenging, as fluctuating supply and increasing demand have led to rising costs and price volatility. Moreover, as the aquaculture industry continues to expand, the demand for fishmeal will surpass the sustainable supply, exacerbating these environmental and economic issues. In response to these challenges, researchers and industry stakeholders have been actively seeking sustainable and cost-effective alternatives to fishmeal. These innovative protein sources are not only essential for reducing the environmental impact of aquaculture but also for ensuring the long-term viability of the industry. The development of alternative protein sources must consider several factors, including their nutritional composition, availability, cost-effectiveness, and environmental footprint.

Glycolysis involves a series of reactions to extract energy from glucose to
release two molecules with three carbons called pyruvate. The process is not
dependent on oxygen but can occur under aerobic and anaerobic conditions,
releasing different end products. Under aerobic conditions, the pyruvate formed
is then oxidized in the mitochondria to CO2 and H2O. The energy released in
glycolysis is in the form of ATP (High Energy Bond). All the reaction steps
occur in the cytoplasm, as it is the extramitochondrial pathway. In anaerobic
conditions and the absence of mitochondria (RBC), the end product of
glycolysis is lactic acid.
The net reaction of Glycolysis (anaerobic) may be summarized as under
Glucose + 2ADP + 2Pi → 2 Lactate + 2ATP
7.1 Steps in EMP Cycle or Glycolytic Pathway
Table 7.1: Steps and enzymes of glycolysis or EMP cycle.

Carbohydrates (glucose) are the primary energy source for a body; when digested, glucose is the end product in human beings and simple stomach animals, but it yields volatile fatty acids in ruminants. Precise regulation of levels of blood sugars/glucose in the body is the net result of various processes like digestion, absorption, and metabolism operating under the interaction of various a) enzymes and b) hormones secreted by the different organs of the body. An abnormal secretion of any of the enzymes or hormones associated with the metabolism of carbohydrates disrupts the precise regulation of blood sugar, leading to various disorders.
14.1 Enzyme Deficiency and Disorders in Carbohydrate Metabolism
Usually, various enzymes are involved in the breakdown of carbohydrates, and if their secretion is insufficient, missing, or does not work correctly, it leads to different disorders.
I. Glycogen storage diseases (GSDs, glycogenosis, and dextrinosis)
Glucose is needed by the cells for the generation of energy and other cellular activities. If glucose happens to be in excess, it is stored as glycogen, mainly in the liver and muscles, for future needs. The stored glycogen can be converted back to glucose when the need arises. Many enzymes are related to this interconversion of glucose and glycogen. Deficiencies of one or more enzymes may lead to abnormal glycogen metabolism, leading to glycogen accumulation of normal or abnormal chemical structure in tissue, collectively called glycogen storage diseases (GSDs). Roman numerals identify different types of glycogen storage conditions. They are also classified under various categories like inherited metabolic diseases, autosomal recessive type, and X-linked type (VIII/IX type).

With few species-specific differences in analyte ranges, clinical chemistry instruments originally developed for human and veterinary use are readily adapted for use in fish specimens. However, the development of hematological methods for fish continues to face challenges similar to those encountered during the early applications of complete blood count (CBC) techniques in birds and reptiles. Like their non-mammalian terrestrial counterparts, fish possess nucleated erythrocytes, and several leukocytes—such as thrombocytes, monocytes, lymphocytes, and basophils—exhibit similar morphology when stained with Romanowsky-type stains.
Blood collection and hematological testing are essential techniques in fish pathogen detection and overall health monitoring within India’s aquaculture systems. These approaches help assess physiological responses to infectious agents, environmental stress, and farming practices. Given the wide variety of cultured species—from carps in West Bengal and Andhra Pradesh to catfish in Tamil Nadu and ornamental fish in Kerala—blood-based diagnostics serve as a non-lethal, rapid, and informative method for health evaluation.
Blood is commonly drawn from the caudal vein or heart using sterile syringes, with or without anticoagulants such as EDTA, depending on the intended analysis. In field conditions, particularly in rural hatcheries and pond systems, affordable options like glass capillaries or insulin syringes are frequently employed. For small-sized species such as Danio or ornamental fish, heparinized capillary tubes are used to reduce clotting during blood collection. Fish are typically anaesthetized using clove oil or MS-222—both widely accessible in Indian laboratories—to minimize stress during handling.

INTRODUCTION
The system responsible for controlling the angular movement of the front wheels of a tractor is called the steering system. This system reduces the effort required by the operator to turn the front wheels through the application of leverages. The key components of the steering system include the steering wheel, steering shaft, steering gear, drag link, steering arm, tie rod, and king pin.
When the operator turns the steering wheel, the motion is transferred via the steering shaft to produce angular movement in the pitman arm, through a set of gears. The pitman arm then transmits this angular motion to the steering arm via the drag link and tie rods. The steering arm, which is attached to the king pin (integrated into the stub axle where the wheels are mounted), influences the movement of the front wheels.
The primary function of the steering system is to control the vehicle’s direction. This is achieved by converting the rotation of the steering wheel into a change in the angle of the steering wheels’ axes through a series of links. The steering system also ensures directional stability, ensuring that the vehicle automatically returns to a straight path when the steering force is released. Additionally, the system is designed to minimize tire wear.
Steering systems can be classified based on their wheel operation: front wheel steering, rear wheel steering, or all-wheel steering.
When the operator turns the steering wheel, the motion is transmitted through the steering shaft to tire angular motion of the pitman arm, through a set of gears. The angular movement of the pitman arm is further transmitted to the steering arm through the drag link and tie rods. Steering arms are keyed to the respective king pins which are integral part of the stub axle on which wheels are mounted. The movement of the steering arm affects the angular movement of the front wheel. In another design, instead of one pitman arm

Introduction
Integrated pest management (IPM) is an ecosystem-based strategy that focuses on longterm prevention [italicsadded] of pests or their damagethrough acombination of techniques such as biological control, habitat manipulation, modification of cultural practices, and use of resistant varieties. Pesticides are used only after monitoring indicates they are needed according to established guidelines, and treatments are made with the goal of removing only the target organism. Pest control materials are selected and applied in a manner that minimizes risks to human health, beneficial and non-target organisms, and the environment
“Pest control is the process of meaning and preventing pests, such as insects, rodents and other animals, from causing damage to crops and other area.” Organic farming is a method of agricultural production that excludes the use of synthetic substances, such as pesticides, synthetic medicines or fertilizers, and genetically modified organisms.
As on 31st March 2023 total area under organic certification process (registered under National Programme for Organic Production) is 10.17 mha (2022-23).
This includes5391792.97hacultivableareaandanother4780130.56 haforwildharvest collection. Among all the states, Madhya Pradesh has covered largest area under organic certification followed by, Maharashtra, Gujarat, Rajasthan, Odisha, Karnataka, Uttarakhand, Sikkim, Chhattisgarh, Uttar Pradesh and Jharkhand. India is bestowed with lot of potential to produce all varieties of organic products due to its various agro climatic conditions.
Pest controls are the many different types like this Cultural control, Biological control, Physical and Mechanical control, Botanical control, Insecticides and other Control etc.

Introduction
Fish and fisheries play a significant role in Kashmir's economy and people's livelihoods. Kashmir abounds with water bodies the lakes, rivers, and streams run the course to produce a favourable environment for numerous species of fish. Apart from the natural water bodies, fish farming has also emerged significantly in Kashmir, where several small-scale fish farmers are engaged in the fish rearing and fisheries activity in ponds and race ways, both for commercial and subsistence purposes (Islam, 2020). The fish farmers do more than just contribute to local food supplies; they also provide money and work for people locally. However, the fish and fisheries sector of Kashmir is faced with various challenges. The challenges range from overfishing, Exclusively Distributed by NIPA GENX Electronic Resources and Solution Pvt. Ltd. New Delhi environmental degradation, and pollution to the lack of infrastructure for fish handling and processing and climatic change. Despite all odds against this sector, the government and other agencies/organizations are trying their best to achieve sustainable management and development of fisheries in Kashmir. Moreover, full- and part-time work by fish farmers and fish workers, seasonal or occasional, supplement thousands of livelihoods with additional income in the sector's activities (Qayoom and Bhat, 2015). Most of those engaged in small-scale fisheries and aquaculture in Kashmir are self-employed, hence directly contributing towards food security within their households and communities. Due to the ever-increasing demand for protein-rich food, the production of fish has elevated around the world. According to the Food and Agriculture Organization, fish production attained 179.2 million metric tons in 2020, which is valued at USD 345 billion (FAO, 2020). This shows a large increase from the years of the 1990s when world fish production was 100 million metric tons.
Fish Production of India
Trends in fish production of India indicate a continuous rise of an annual average growth rate of 8.61% over the period from 2014-15 to 2021-22 (dof. gov.in). It is due to inland fisheries, which contributes around 75 percent of the total fish production in the year 2021-22, while the remaining 25 percent is from marine fisheries (dof.gov.in). Value-wise, the country's fish production has also had a massive outflow in exports, touching US$ 8.09 billion in FY 2022-23 (Handbook of fisheries statistics, 2023).

Introduction to the Salmonid Family (Trout’s and Salmon)
The Salmonidae constitute the only extant family of ray-finned fish in the order Salmoniformes, with 11 genera and more than 200 species collectively referred to as "salmonids" or "salmonioids". This family includes all coldwater mid-level predatory fish found in subarctic and cool temperate waters in the Northern Hemisphere, such as char, graylings, freshwater whitefish, taimens, lenoks, and salmon (both Atlantic and Pacific species). In addition to being the Exclusively Distributed by NIPA GENX Electronic Resources and Solution Pvt. Ltd. New Delhi eponym of its genus, the Atlantic salmon (Salmo salar), has also been given the names of its family and order as well. Among teleost fish, salmonids have a relatively primitive appearance, with pelvic fins in the rear and an adipose fin at the rear. There is a single row of sharp teeth in their mouth, along with rounded scales and forked tail fins (Mc Dowell, 1998). Salmonids vary greatly in size, and the smallest reach only 13 cm (5.1 in) when adults, while the largest reaches 2 m (6 ft 7 in) (Pauly et al., 2008). Salmonids are migratory fish that spawn in the shallow gravel beds of freshwater headstreams, develop into juveniles in rivers, creeks, small lakes, and wetlands, and then migrate downstream to spend the majority of their adult lives in larger bodies of water upon reaching maturity. Often euryhaline, salmonid species migrate to the sea or brackish estuaries as soon as they reach adulthood. Just for breeding purposes, they migrate back to the upper streams. Some freshwater salmonids that migrate only between lakes and rivers are referred to as potamodromous, whereas the life cycle of these sea-run salmonids is known as anadromous. In the middle food chain, salmonids are carnivorous predators that eat smaller fish, crustaceans, aquatic insects and larvae, tadpoles, and occasionally fish eggs (even those belonging to their own species), which are then eaten by larger predators. Salmonids are regarded as keystone organisms that contribute biomass to freshwater and terrestrial ecosystems as a result of their mass migration from oceanic to inland waterbodies. Three lineages of salmonids are currently recognized, each classified as a subfamily: Coregoninae (freshwater whitefish), Thymallinae (graylings), and Salmoninae (trout, salmon, char, taimens, and lenoks). Each of the three lineages is generally accepted to belong to a monophyletic group based on derived traits (McPhail and Strouder, 1997).
Salmons and trouts are well-known for their economic importance as both sport fish and commercial products. Trout and salmon stocks are stocked worldwide each year for sport and commerce. Millions of salmon and trout are hatched, raised, and stocked every year as part of government investment programs. To meet market and restaurant demands for trout, a large private industry has developed—especially in Denmark, Japan, and the U.S. Scientists are confronted with the challenge of perpetuating and increasing the abundance of salmon and trout because of the increasing human population and industrial and agricultural demands on rivers. Among heavily populated regions, the demand for trout outstrips the supply. As a result, state and federal agencies in the United States have initiated massive programs to raise and stock trout in heavily fished waters. The artificial abundance of trout, however, is not a good substitute for the natural abundance of the fish.

Overview of Recreational Fisheries in India with Special Emphasis on Kashmir Valley
Sport fishing, often referred to as Recreational fishing is fishing for fun or competition. It differs from commercial or subsistence fishing which targets for profit or fishing for survival respectively (Mandal et al., 2016). As per FAO (2012), recreational fishing is fishing of aquatic animals (mainly fish) that do not constitute the individual’s primary resource to meet basic nutritional needs and are not generally sold or otherwise traded on export, domestic or black markets. It is one of the most adventurous things in the world. In the simplest form, sport fishing involves using rods, lines, hooks and bait or lures to attract and catch the fish (Mandal et al., 2016). The fighting attributes of the target species leads to the sport of the fishermen in Sport fishing. Even though the sport fishing seems to be limited in the freshwater ecosystems it is extended to the marine waters also. Sport fishing involves catching of fishes which require skills as well as knowledge regarding the behaviour and food preferences of the target species. Sport or game fish are the targeted species that are caught by rods and lines and not released back into the water by the hobbyist or fishermen in disgust. However, releasing the catch to the environment should be a prerequisite for sport fishing considering the ecological and conservation point of view. In sport fishing, the target fish is played by the hobbyist until the fish is landed or lost (IGFA, 2016). According to Mandal et al. (2016), sport fish can be categorised into 2 group namely Small and Big. The fish which as less than 50 kg are grouped as the small ones like mahsser, trout etc. whereas fish weighing more than 50 kg are grouped as big ones like Goonch catfish. Fishing is an old age practice and fishing by hooks and line is the primitive form. Fishing purely for fun and releasing caught fish is a much more modern development. Although it is not possible to clearly state when fishing was first said to be recreational, the book titled ‘The Complete Angler’ by Izzak Walton in 1963 described recreational fishing for the first time. In India, King Somesvara’s (1127 AD) has mentioned about recreational fisheries (Matsyavinoda) in his treatise “Manasollosa” (Hora, 1951). With the record and description of mahseer from Ganges in the early 19th century, soon it became popular as an angling species through the efforts of the Oriental Sporting Magazine (Nautiyal, 2014). In the meantime, many different authors have pointed out about angling in India and highlighted about the sporting fishes.
British anglers have introduced first-time brown trout (1860s) and rainbow trout (1909) in streams and rivers of the Himalayas and Western Ghats (Sehgal, 1999a, b). Although recreational angling struggled to maintain its

Introduction
The global population is on track to surpass 9 billion by 2050, leading to a staggering 70% increase in the worldwide demand for food, feed, and fibre. This population growth is closely linked to significant shifts in lifestyle and consumption patterns, primarily driven by the accelerating pace of urbanization. As a consequence, it is anticipated that there will be a decline in the consumption of grains and pulses, coupled with a significant increase in the consumption of vegetables, fruits, meat, dairy, and fish. Aquaculture, a time-tested industry, stands out as a crucial source of high-quality protein for humanity (Nash, 2010; Gui et al., 2018). As our global population continues to expand, the challenges of resource scarcity and environmental degradation are becoming increasingly evident. Land resources alone are no longer sufficient to support the evolving needs of our society. Consequently, our oceans are emerging as a new frontier for human sustenance and development, with fish taking on a pivotal role as a source of high-quality protein and a fundamental dietary staple (Baiden and Bissiri, 2007). Over the past few decades, aquaculture has risen to become the fastest-growing sector within agriculture. Since 2013, its production has even outstripped that of wild fisheries (FAO, 2020). This formidable challenge presents particularly alarming situations in developing countries where poverty and hunger persist (World Bank, 2014). In such a context, fisheries and aquaculture are anticipated to play a vital role in ensuring nutritional security (Subasinghe, 2014). According to the FAO, food production will need to rise by 70% by 2050 to meet the rising demand brought on by population growth and dietary changes (FAO, 2009). By effectively using the limited water resources, the fisheries industry may serve to address this issue and contribute significantly to nutrition and food security. A significant source of nutrition, food, income, and livelihood for millions of people worldwide continues to be the fishing and aquaculture industries (FAO, 2016). Additionally, fish contribute to global food security by providing up to 17% of the protein consumed by the world's population (Bennet et al., 2018), and fishing is one of the most widely practised livelihoods worldwide (FAO, 2014). Although fish are the most diversified group of vertebrates, they are the second most threatened species after amphibians (Collen et al., 2014).
Freshwater ecosystems have been among the most endangered habitats worldwide in recent decades. Freshwater researchers have become more concerned about the devastation of riverine environments, changes in aquatic ecosystems, rapid decrease in water quality, and considerable decline in the variety and abundance of stream fishes. The presence, distribution, abundance, and diversity of fishes in the aquatic ecosystem are influenced and shaped by

Guava, Psidium guajava L., belongs to the family Myrtaceae, which comprises 3,000 species under 80 genera. It is well-distributed in the tropical and subtropical regions of the world, especially in South America, Asia and Australia. The genus Psidium has about 150 shrubs and P. guajava is wellknown and grown worldwide. The flower of guava is self-pollinated; cross pollination, however, is estimated to be around 35% and pollination mainly carried-out of by bees and other insects. Therefore, seed multiplication will result in genetic heterogeneity that can be observed in orchards and plants in the same orchard. Therefore, seed propagation in commercial orchards to increase productivity is not recommended. The methods of vegetative propagation have been studied for the purpose of the production chain. In addition to the propagation structure, the costs of new technologies must also be taken into account.
Progress in guava propagation has taken place in the last 100 years. It is important to know how to use the same methods of graftings and cutting. Detection of growth regulators, information on role of the juvenile stage in reproduction, advances in knowledge of chimeras, micro-propagation and application of vegetative propagation to prevent diseases caused by viruses and other pathogens. One can propagate guava by buddings, air layering, stoolings and inarching are not yet commercially feasible due to different success rates, the lack of a tap root system and burdensome processes. The purpose of this review is to discuss the diverse methods of propagating guava which are used commercially and the advancement made in recently.

Terrace farming is a widely practiced agricultural method in India, particularly suited for hilly and mountainous areas. It involves shaping the landscape by carving out flat sections—known as terraces—into the slopes of hills or mountains. These levelled surfaces make it easier to cultivate otherwise steep and challenging terrain. This age-old technique, also known as step farming, creates a series of stepped platforms that resemble a staircase along the hillside. The approach is both practical and resourceful, allowing farmers to use sloped land efficiently for crop cultivation.
The primary motivation behind transforming large hill surfaces into terraces— despite the considerable labor it demands—is to control the rapid downhill flow of water that typically occurs in such regions. However, terrace farming comes with its own set of challenges. The soil on terraces often has limited water retentioncapability, and erosion can become more severe. Nutrients and soil particles tend to be washed away into rivers. In addition, if trees are cleared for farming, the land becomes vulnerable to landslides and mudslides during periods of heavy rainfall. Terrace farming is a prevalent agricultural practice in India, especially in regions characterized by hilly or mountainous topography. This method involves the creation of flat, horizontal plots—referred to as terraces—along the natural contours of slopes. These terraces transform steep, uneven land into cultivable platforms, making farming on such terrain more manageable and productive. Also known as step farming due to its resemblance to staircases carved into hillsides, this traditional technique is both efficient and adaptive. It enables the utilization of sloped land that would otherwise be unsuitable for agriculture. The primary reason for undertaking this labor-intensive process is to manage the rapid runoff of water common in elevated terrains. By interrupting the slope, terraces help slow water flow and reduce surface erosion. Nevertheless, terrace farming poses several challenges. The soil tends to have limited capacity to retain moisture, and erosion can still displace vital topsoil and nutrients. Furthermore, deforestation to create terraces can heighten the risk of landslides and mudflows during intense rainfall.

A thorough review of existing literature forms the cornerstone of any specific investigation. Research does not occur in isolation; rather, it is built upon the accumulated knowledge, insights and relevant findings of the earlier studies. As the part continues to shape the trajectory of future enquiry, examining prior research provides valuable guidance, conceptual clarity and a framework within which the present study can be situated. Recognizing this, efforts were made to systematically collect and review scholarly contributions that bear relevance to the present investigation. Although contract farming has emerged as an increasingly important institutional arrangement in Indian agriculture, the body of literature availableparticularly in the discipline of Agricultural Extension-remains comparatively limited. Much of the research attention has traditionally been directed toward areas such as the adoption of agricultural technologies, while the broader socio-economic and behavioural dimensions of contract farming have received relatively less systematic analysis. This creates a noticeable gap that the present study seeks to address.
Despite these limitations, the available research offers meaningful insights into how contract farming shapes rural livelihoods. Studies point to the potential for income enhancement, employment generation and poverty reduction, while also highlighting diverse socio-personal and psychological attributes of farmers that influence the participation and outcomes. Moreover, research also identifies several constraints-ranging from institutional and infrastructural barriers to communication gaps, that potentially affect the effectiveness of such arrangements.
For the sake of clarity and coherence. The literature reviewed has been organised under the following thematic headings:
I. Contract farming and poverty reduction in terms of income generation- studies that explore how the participation in contractual arrangements with agribusiness firms contributes to farmers’ earnings, household income security and poverty alleviation.

Human migration is the movement of people from one area to another with intentions of settling, permanently or temporarily, at a new site (geographic region). The movement frequently happens across great distances and from one nation to another, although internal migration (inside a single country) is also feasible; fact, this is the major type of human migration worldwide. Migration is typically connected with stronger human capital at both individual and household level, and with better access to migration networks. Age is also essential for both job and non-work migration. People may travel as individuals, in family groupings or in big groups. There are four primary modes of migration: invasion, conquest, colonization and immigration/ emigration (Daylit et al., 2022).
Individuals migrating from their home owing to forced displacement (such as a natural catastrophe or civil conflict) may be classified as displaced individuals or, if staying in the home nation, internally-displaced persons. A person who seeks shelter in another nation may, if the reason for leaving the home country is political, religious, or another type of persecution, submit a formal application to that country where protection is sought and is then commonly characterized as an asylum seeker. If this application is successful this person’s legal status becomes that of a refugee.
In modern times, migration governance has grown strongly tied with state sovereignty. States maintain the right of deciding on the admission and stay of nonnationals since migration directly impacts some of the distinguishing qualities of a State (Mawire et al., 2020).

A literature review is an organized, in-depth examination of books, journals, and research papers related to a particular subject that serves as a foundation of knowledge. By pointing out gaps in the present body of knowledge, literature reviews aim to identify and evaluate the body of existing research on a certain subject in order to support your own study. This inquiry needs to include an explanation, synopsis, and critical assessment of previous studies pertaining to the research challenge. It should also contribute to the body of knowledge on the subject and show how your findings will fit into a broader body of knowledge. Your research goal should be guided by the critical examination of the most recent research on the subject provided by a literature review. This is not the same as a book review or an annotated bibliography, which are research instruments with quite distinct goals and purposes. Writing a process document is essential to a successful literature review.
Purpose
A literature review’s objectives are to:
• Offer a solid foundation of information on the subject.
• Locate areas of earlier study to avoid repetition and to acknowledge the contributions of other experts.
• Determine the need for further research (include evidence to support your findings).
• Determine how one piece relates to the other and to the theme in the context of both.
• Set your own research in the framework of previously published works that argue for the necessity for further research.

Water system is considered an Arti?cial usage of the water on the dirt utilizing various strategies like siphons, cylinders and showers. Typically, the requirement for water system shows up where the precipitation is unpredictable, in dry times, or where lack of hydration is customary. An excessive number of water system frameworks are accessible with various sorts as indicated by the Climate of the dirt. The water utilized in water system has numerous assets, like underground water, through wells or springs; the surface water, from lakes, streams; or other a few sources, for instance, the treated wastewater or desalinated seawater. In this way, farmers need to save and safeguard their Agriculture water sources by limiting the capability of diseases. Since with any groundwater extraction, clients of water system water should be mindful so as not to deplete groundwater out with a rate more prominent than it is being recovered. There are two strategies of current water system systems, the conventional water system procedures and the Smart water system philosophies. Water system is like surface water system, trickle water system and sprinkler water system. Later on, a few extreme and confounded issues will be met by inundated agriculture. An illustration of a signi?cant issue is the low efficiency of the water assets for water system. An important safe guess is that over 40% of the diverted water system water is spent before at the level of the ranch, either through profound permeation or at the surface spillover. Nonetheless, frequently these misfortunes address botched open doors for water, as they keep water from showing up at the downstream redirections. One of the most noticeable coming issues is the expansion of various water prerequisites assets, for example, manufactural and metropolitan requirements. These are utilized to give water assets a higher worth, so as a result, researchers favor concentrating entirely on rehearses with a high inefficient rate. s worldwide populace is expanding quickly, rural efficiency in drylands needs improvement to fulfill food security needs. Subsequently, taking on Precision water system approaches is a suitable choice to more readily use the accessible water assets and further develop water efficiency in drylands. Water shortage has become one of the basic issues and undermines the supportable improvement

Agriculture addresses the essential food wellspring of the world, and it has been confronting serious difficulties because of the rising interest for food items, sanitation, and security worries as well as calls for ecological insurance, water conservation, and maintainability. This improvement is anticipated to go on since the total populace is assessed to reach 9.7 billion by 2050. Since farming comprises the most noticeable illustration of water utilization around the world, it is normal that food interest and water utilization will decisively increment within a reasonable timeframe. Moreover, the rising utilization of composts and pesticides combined with the increase of cultivating exercises could prompt future ecological difficulties. Essentially, arable land is restricted, and the quantity of farmers is diminishing around the world. These difficulties highlight the requirement for imaginative and practical cultivating arrangements.
Consolidating novel innovations has been distinguished as a promising answer for address these difficulties. Brilliant cultivating and Precision farming have arisen because of such discussions. The previous is an overall idea for information communication technologies (ICT) and other state of the art developments in cultivating exercises to build productivity and viability. The last option centers around site-explicit administration in which the land is separated into homogeneous parts, and each part gets the specific measure of agricultural contribution for crop yield enhancement through original advances. Unmistakable advances that certainly stand out in this field incorporate Wireless Sensor Networks (WSNs), the Internet of Things (IoT), artificial intelligence (AI) techniques, including machine learning and deep learning.
Notwithstanding the previously mentioned innovations, remote detecting has been viewed as a mechanical device with high potential to work on savvy and Precision farming. Satellites, human-maintained airplane, and robots are well known remote-detecting advances. Drones, popularly known as Unmanned

The quantity of space available for product storage is referred to as warehouse capacity. Understanding the distinction between theoretical working capacity and storage capacity can be aided by warehouse capacity. In warehouses and other storage facilities, space is perhaps the most valuable resource for online retailers. By making the most of their warehouse space, businesses can significantly increase the quantity of goods they can store there. Having more things in storage at once can save them money on transportation and other expenses.
It also makes it easier for the warehouse KPI staff to access the products, which helps them process orders faster and deliver the goods to customers sooner. Because space can be limited in a warehouse setting, warehouse managers and business owners should take the time to assess how much space they have and how well they’re using it.
STEP TO CALCULATE WAREHOUSE STORAGE CAPACITY
Understanding your warehouse’s current capacity is the first step in
determining how to increase it. This brief guide will show you how to calculate a
warehouse’s capacity in feet:
• Calculate the total square footage of your warehouse complex. Let’s assume that it is 10,000 square feet in this case.
• Determine the total amount of space devoted to non-storage purposes, such as offices, loading areas, restrooms, and break rooms. Assume for the moment that this is equivalent to 2,000 square feet.
• Subtract the total square feet of non-storage space from the total square feet of your warehouse to determine the usable space. The following is the equation:
USABLE SPACE-TOTAL SQUARE FEET – NON-STORAGE SPACE SQUARE FEET
Determine the total usable storage space by identifying the maximum stack height or clear height. This should account for the lowest-hanging overhead

The inspection of storage facilities and the food products they contain is crucial for preserving grain intended for human consumption. Stored grain is not simply a passive substance; it is a living, breathing organic entity that undergoes deterioration during storage. This deterioration can occur in terms of quantity, through dry matter loss (DML), or quality, with issues such as discoloration, mold contamination, sprouting, and caking caused by microorganisms, invertebrate pests (insects and arachnids), and vertebrate pests (rodents and birds). Additional weight loss happens during the handling, transportation, and processing of stored grains.
To gather accurate data on all forms of loss, regular and thorough inspection and sampling are essential. These inspections are crucial for making informed management decisions regarding remedial actions against biological deterioration agents or the disposal of grain, taking into account the condition of both the commodity and the storage environment. Regular inspections help maintain a storage environment that supports grain quality by keeping track of any significant pest population increases, grain temperature, moisture migration, spillage, and grain residues.
Such inspections also encourage the general upkeep of the storage structure and its surroundings, which helps to minimize pest access. By addressing cracks and crevices in the storage fabric and removing old, often infested, bags and equipment, the risk of pest infestation is significantly reduced.
The inspection should address several factors:
• The presence of pests, if any
• Identification of species, population densities, and locations
• Damage inflicted prior to inspection
• The growth potential of pest populations or whether they will die out if conditions remain the same

The plants draw water from the soil for growth and development. The soil acts a reservoir for soil moisture (Fig.5.1). The basic aim of a soil water balance model is to quantify the manner in which the water supplied to the soil either through precipitation and irrigation is disposed off. In the process, the soil water balance models were found to be extremely useful to determine the amount of water utilized by the crop for evapotranspiration.
The concept of water balance was originally developed by Thornthwaite, an American geographer and it formed the basis for development of more scientifi c advances due to its wide range of applicability including
• Choice of crops/ cropping systems based on water availability
• Irrigation scheduling
• Optimisation of limited water resources for higher productivity
• Characterization of droughts and agricultural droughts
• Assessment of crop yield and pre harvest forecasting of crop yields
• Designing irrigation projects
• Development of water storage structures
There are quite a large number of water balance models available in literature nowadays. Several of these models may be applicable for regions where there are developed. There were considerable efforts to develop water balance models can be used by the crop on daily basis in case of different crops as well. The choice of a water balance model to a large extent depends on the availability of data required for running the model. It may not be possible to cover all models available in

The movement of water from soil to the crop canopy and leaves to provide water for transpiration and the effect of weather factors on transpiration is most important area of study. When the crop is just sown, there will be an only evaporation of water from the soil. After germination of seeds there will be emergence of seedlings. After the emergence of seedlings there will be formation of leaves. The small leaves start intercepting the incoming solar radiation and absorb some portion of solar energy, get heated and there will be evaporation turn off water from the stomata of the leaf. When water vapour escapes into the atmosphere through the stomata of leaf, the plant absorbs carbon dioxide which results in photosynthetic activity. During night time, there will not be any photosynthesis due to absence of sunlight. The plants use parts of the photosynthetic accumulate for its metabolic activity and the process is called maintenance respiration. The balance of the photosynthetic accumulate contributes to the expansion of leaves and increased dry matter accumulation in crop plans. The process of dry matter accumulation in plants is called crop growth. When the seedlings start growing, there will be formation of tillers or branches. When the leaves grow it reaches a stage when the crop will be completely shading the ground and the soil evaporation will be minimum and maximum amount of water is lost only through evapotranspiration (Fig.6.1).

Introduction
Pathogenic organisms that cause diseases in plants are generally referred to as plant pathogens. Fungi, bacteria, viruses, viroids, algae and protozoa are the important phytopathogenic organisms responsible for plant diseases and they cause immense economic losses to growers. Recent estimates indicate that crop losses due to diseases range from 17-30%, primarily caused by fungal, oomycete, and nematode pathogens (Agrios, 2005). Beyond biotic factors, crop losses can also be attributed to abiotic causes, such as poor agricultural practices, nutrient deficiencies, changes in temperature and rainfall patterns, inadequate/overirrigation and weather extremes, all of which exert selection pressure on plant pathogens, potentially leading to new host infections. Hence, for effective disease management strategy, accurate identification and diagnosis of plant pathogens are of paramount importance before the pathogen induces any epidemic leading to immense loss of crop plants which is certain. Often, identification can be accomplished either visually through microscopic observation of disease-causing micro-organisms or molecular diagnosis based on nucleic acid detection methods. Microscopic observations alone are inadequate for species-level identification of plant pathogens and can often lead to taxonomic errors due to the potential for misidentification of organisms. Nucleic acid-based diagnostic tools allow for the sensitive detection, precise quantification, and specific differentiation of pathogens.Although numerous nucleic acid-based methods are available for plant pathogen detection, PCR-based diagnostics, especially those employing DNA barcodes, are still considered highly reliable and accurate. Scientists, especially plant pathologists, can now easily identify and diagnose most plant diseases as many standardized phytopathogen barcodes facilitate rapid, early, and accurate identification of plant diseases.

Introduction
In the realm of modern agriculture and plant breeding, the integration of advanced biotechnological tools has revolutionized the traditional methods of crop improvement. Traditional approaches to genetically improving horticultural crops that are primarily propagated asexually encounter multiple challenges. These include an extended juvenile phase, the absence of seeds, a high level of intraand interspecific incompatibility, frequent heterozygosity, seed sterility, and, most importantly, the restriction of certain valuable traits to wild species (Mehlenbacher, 1995). Conventional or classical breeding techniques rely on natural processes and traditional tools to develop new plant varieties or cultivars. However, these methods are often time-consuming, labor-intensive, and less efficient. The lengthy process, coupled with the challenges of maintaining desirable traits, makes it difficult to achieve rapid genetic improvements. As a result, there is a growing need for more advanced and precise breeding methods to enhance crop development (Jain and Kharkwal, 2004). A molecular marker is a specific DNA segment that signifies genetic variations at the genome level, aiding in genetic analysis and breeding (Dhutmal et al., 2018). These are composed of nucleic acids as well as proteins and used on basis of naturally occurring polymorphism (Thottappilly et al., 2000; Ahmad et al., 2020). These markers are closely related with the target gene and they act as sign or flags (Nadeem et al., 2018), aiding in the identification of specific regions associated with advantageous characteristics such as disease resistance, yield potential, nutritional content, and environmental adaptability (Meena et al., 2023).The advancement of high-throughput molecular markers and genetic maps has enabled the precise identification of genes responsible for agronomically important traits, potentially enhancing breeding through markerassisted selection (MAS). Compared to traditional breeding methods, MAS overcomes the challenges of phenotypic selection and significantly improves selection efficiency. This approach accelerates crop improvement by ensuring the effective transfer of desirable traits with greater accuracy and reliability (Wani et al., 2022). The incorporation of next-generation sequencing (NGS) technologies and high-throughput genotyping platforms has also facilitated genome-wide association studies (GWAS) and the discovery of single nucleotide polymorphisms (SNPs) linked to important traits, further enhancing the resolution of genetic analysis. In recent years, molecular markers have been extensively used to characterize and enhance genotypic and phenotypic traits in temperate fruit and nut crops. Studies have focused on assessing genetic diversity in almonds, identifying genes responsible for red skin color in apples, developing sharka disease-resistant apricots, and sequencing the almond genome. These markers have been successfully used for genetic studies in many horticultural crops including vegetables (Gulsen et al., 2007; Kumar et al., 2008 a and b; Schafleitner et al., 2013; Yadav et al., 2015; Sharma et al., 2016; Kumar et al., 2017 and Kumar et al., 2019) and flowering crops (Kumar et al., 2019; Kumar et al., 2016 and Kumar et al., 2018a and b). These advancements highlight the crucial role of molecular markers in improving breeding strategies, accelerating genetic improvements

1. Introduction
Water is the most crucial input for agricultural production. Globally, more than 80% of all freshwater used by humans are consumed in agriculture and most of it are for crop production (Morison et al., 2008). Currently about 60% of production in developing countries is derived from rainfall. Though irrigation provides only 10% of agricultural water use and covers just around 20% of the cropland, it can contribute about 40% of total food production since productivity of irrigated land is almost three times higher than that of rainfed land. The Food and Agriculture Organization (FAO) has predicted a net expansion of irrigated land of about 45 million is hectares in 93 developing countries (for a total of 242 million hectares in 2030). It projected that water withdrawals by the agriculture sector will increase by about 14% during 2000 – 2030 to meet the growing food demands (FAO, 2006). It is estimated that by 2050 in India, about 22 % of the geographic area and 17 % of the population will be under absolute water scarcity. The per capita availability of water which was about 1704 cubic meter in 2010 is projected to be 1235 cubic meter in 2050 (Anonymous, 2011). Infrastructure to increase the command area and minimize the gap of irrigation potential created and utilized is the dominant component of overall investment in agriculture (Anonymous, 2011). Besides this, judicious agricultural water management assists in ensuring good returns through efficient use of fertilizers and high yielding crop varieties. Above all, water will remain as a critical input for attaining sustainability in agricultural production. India’s current water supply is approximately 740 billion m3, which necessitates implementation of judicious water management technologies to enhance crop water productivity. In recent decades the world’s population has shown tremendous growth from an estimated 2.5 billion in the 1950’s to approximately 6.7 billion till date. It is expected that reduction in the average size of land holding, declining per capita water availability, deterioration of water quality etc. will seriously affect the sustainable use of water resources and will make it difficult to accomplish the target of producing 345 Mt of food grain in 2030 and 494 Mt in 2050 AD. To achieve the targeted food production, increase in the crop productivity from the present 2.3 to 4.0 t ha-1 under irrigated conditions and from 1.0 t ha-1 to 1.5 t ha-1 in rainfed area, productivity need to be increased at individual field level. This demands efficient use of water in agriculture, which can be achieved by reducing the losses of water and increasing the water uptake by the crops and it requires quantification of different water budgeting parameters like evapotranspiration and deep percolation.

1. Introduction
As climate change advances, risk of managing soil and atmosphere with regard to emission and pollution is going out of hand. Many researches and reports say that currently the global warming is 1.1°C more than the pre-industrial levels, which is not far behind the target of 1.5°C which was agreed by nations under the Paris agreement in 2015 (Janki M, 2023). Achieving that will likely involve removing carbon dioxide from the atmosphere, according to the Intergovernmental Panel on Climate Change. But strategies like capturing and storing the carbon emissions from biofuel-burning power plants, or planting new forests to absorb carbon, can create their own problems. Recently UN security general said we are shifting to the “Era of global boiling” from global warming. Globally countries are witnessing unbearable heat waves, forest fires, irregular rainfall, flashfloods, coral bleaching and unpredictable weather patterns which often resulting in devastating effects on the coastal and hilly regions of the country. Around nine tipping points have been identified so far globally. Climate tipping points are threshold that when crossed leads to irreversible changes in the climate system and will have a severe impact on the living organisms on the earth. All these variations in climate are driving by increasing greenhouse gas (GHG) emissions and global warming. We cannot change the state of atmosphere to as existed thousands or millions of years ago. Only option left with us is to reduce emissions and prevention of further global warming and climate change. As we are already existing in some level of changed climate, responding to climate change involves a two-pronged approach, reducing emissions of and stabilizing the levels of heat-trapping greenhouse gases in the atmosphere through mitigation and secondly, adapting to the climate change. Because climate change is irreversible process.