eChapters

• Air layering is called “Marcottage” in China and “Gootee” in India.
• IBA (2-10g/liter of water) is most effective in root promotion in air layering of litchi.
• Flowers are petalless.
• Subtropical evergreen fruit tree; prefers a moist climate.
• Moist summer and cool winter favour litchi production.
• Red pigment – Anthocyanin.
• The pulp is an outgrowth of the seed in litchi.
• Roots – Mycorrhizal association (Fungus).
• July-October is the most appropriate time for propagation.
• January end to the onset of monsoon is a critical period for irrigation of litchi.

• Fast track plum breeding started with an aim to reduce the juvenile period in temperate fruits.
• Transgenic early continuous flowering (ECF) gene induces early flowering.

  Chilling requirement

• Japanese Plum - 700-1000 hrs - below – 7°C
• European plum - 1000-1200 hrs - 7°C
• Clonal rootstock for raising plum plants: Myrobalan B.
• Dwarfing rootstock – P. subcordata
• Planting time – Dec-Jan
• Training System – Open centre system – oldest
• Japanese plums are mostly adaptable to open centre system.
• Fruit thinning agents – DNOC, Ethephon, 3-CPA
• Japanese plum needs thinning upto 25 - 40%.
• European Plum: President, Victoria, Starking Delicious, Greengage.
• Japanese plum – Beauty, Santa Rosa, Mariposa. Kelsey, Frontier, Elephant Heart, Satsuma
• Subtropical – Sultlej Purple, Kala Amritsari, Titron.
• Self-fruitful – Beauty, Mariposa

2.1 Introduction

Life exists in almost all diverse habitats, ranging from high mountain peaks of more than 20,000 feet to deep sea bottoms of up to 10,000m. Living organisms can be found in ponds, pools, ditches, sulphur springs, hot springs, the cold of the Polar Regions, the scorching heat of deserts, dense tropical forests, and anywhere else life is possible.

However, not all organisms occupy all possible life-supporting areas.

7.1 Introduction

Placoderms (plate-skinned fishes) (Fig. 7.1) flourished and evolved in divergent lines during the Devonian period and became extinct by the end of the Permian period. They were bottom-dwelling, mud-sucking Palaeozoic fishes that may have been nectonic. Their bodies were divided into three parts: the head, the trunk and the tail. They ranged in size from 10 cm to 9 meters. The head and trunk are surely covered by bony plates.

9.1 Introduction

Holocephalians are a group of highly specialised cartilaginous fishes that live in the sea. It is structurally similar to Elasmobranchii and Teleostomi. It exists in both extinct and living forms. Previously considered a class of Pisces, Nelson (1984) classified Holocephali as a sub-class.

9.2 Systematic Position

Phylum: Chordata

31.1 Introduction

Courtship is the behavioural interaction that occurs between males and females before, during and just after mating. It encompasses all expressive movements associated with pair formation and mating. “Courtship is the heterosexual communication system that leads to the consummatory sexual act,” says DeMorris. Arthropods, mollusks, fish, reptiles, and mammals are the most affected. It consists of various activities and serves a specific purpose. Many courtship activities ensure that people only mate with people of their species. The distinction between species’ courtship behaviour allows females to identify males of their species. It is concerned with reproductive fitness and provides opportunities for survival

37.1 Introduction

Temperature describes the kinetic energy of the gases that make up air. As gas molecules move more quickly, air temperature increases. Among several environmental changes, increased air temperature affects the water cycle by increasing water temperature, which causes changes in local weather, water quality and river bodies (Gossiaux et al., 2019). This is because the water temperature is one of the most important factors for physicochemical properties of water quality (Szumiriska et al., 2020), aquatic habitats (Duggals et al., 2018), spawning rates (Besson et al., 2016) and fish growth (Collas et al., 2019) (Fig. 37.1).

Fungicides have been used to manage plant diseases since ancient times. The use of sulphur as a purifying agent is documented in the Old Testament, Homeric poems published about the eighth century B.C., Vedic literature (1500-500 B.C.), Buddhist literature, Surpala’s Vrksayurveda (800 A.D.), and other texts. Chemicals’ importance as fungicides was recognised only when fungus were clearly identified as a cause of plant diseases.

Over the previous two centuries, a wealth of information on fungicides has collected, owing primarily to advances in fungicidal chemical expertise. Aside from chemical control, other alternative approaches of disease control have earned appropriate respect throughout this period. However, in today’s modern agricultural system, fungicides play an important role in disease management and are useful in increasing crop output by reducing the attack of hazardous plant pathogens.

The effects of weeds, pests, and diseases result in the loss of between 20 40% of the world’s potential agricultural yield each year. By reducing crop loss from pest infestations, the use of pesticides can boost agricultural output by 25–50%. Only 25 to 30 percent of the area that is now being grown is protected by pesticides. Because domestic pesticide use is among the lowest in the world, there is significant room for expansion. India uses 0.6 kilogramme of pesticides per hectare compared to the global average of 3 kg per hectare. The use of crop protection products must be enhanced. There are now 1175 compounds accessible in the world, however only roughly 292 of them are registered in India.

Botanicals

Botanicals play a significant role in the development of a disease management approach that is both ecologically sound and acceptable to the environment. Plant products have been found to have fungicidal, bactericidal, and antiviral properties. It is known that 346 plant species have fungicidal, 92 have bactericidal, and 90 have antiviral properties. This proves conclusively that the plant kingdom is home to a sizable stockpile of chemicals that can control a range of plant diseases. Because many of them employ many modes of action and plant compounds are safer for species other than the targeted, there is also less chance of resistance developing.Plants and plant products known as botanicals are safer for protecting plants against pathogens.

Pesticides are any chemical or mixture intended for use as a plant regulator, defoliant, or desiccant as well as any substance or mixture meant for preventing, getting rid of, repelling, or controlling pests. Agricultural pests include insects, weeds, fungi, bacteria, viruses, nematodes, rodents, and mollusks. The term pesticide, which refers to these pests and cide, which meaning “to kill.” Insecticides, fungicides, bactericides, weed killers, molluscicides, rodenticides, nematicides, and other types of pesticides can be classed as pesticides. Every manufacturer of pesticides as well as companies with CIB & RC registration must provide all scientific data on bio-ecacy, toxicity, residues, and safe waiting periods that has been obtained via laboratory research.

Chemotherapy is the procedure of treating a sick or infected plant using chemicals to kill the fungus. Chemotherapy has proven successful in very few circumstances. For example, plants have been treated with antibiotics to minimise the severity of “lethal yellowing” of palm trees caused by Phytoplasma and the decline of pears. Likewise, fungicides have been used to elm trees to mitigate the effects of Ophiostoma ulmi and O? neo-ulmi, the causative agents of Dutch elm disease. The chemotherapy drugs must, however, always be given repeatedly. Systemic fungicides like sterol biosynthesis inhibitors (SBIS), which partially penetrate plant tissues, eradicate recent infestations.

Chemotherapeutic fungicides are a class of systemic fungicides that have some plant mobility. They are capable of eliminating diseases even in parts of the plant that were not exposed to the chemicals. Unfortunately, pathogens develop resistance to systemic fungicides because they are site-specific

Combining two or more pesticides in a tank saves time and labour while also lowering equipment and application costs. However, the effectiveness of one or more products may change in some circumstances. Two or more pesticides are compatible if they may be mixed and sprayed together without changing the efficacy, physical and chemical qualities of the mixture, or harming unwanted application locations. Chemicals are considered incompatible when issues arise when more than one product are mixed..

Incompatibility

Incompatibility occurs when a pesticide is unable to be adequately blended to generate a homogenous solution or suspension. Flakes, crystals, or greasy masses, as well as significant separation, are not acceptable. Incompatible mixes like this can clog application equipment and hinder the even distribution of the active ingredient in the spray tank. This inhibits pesticides from being applied properly.

Agrochemical Sector is Transforming

Over two lakh crores of India’s agricultural production—roughly 20% of overall production—are lost to pests and diseases. In order to safeguard farmers’ crops in this situation, agrochemicals might be quite important. Even though India uses very little agrochemicals domestically (less than 0.5 kg/ha), it is the world’s fourth-largest producer of agrochemicals.

n the post-COVID era, there is ample opportunity for agrochemicals to emerge as one of the key export sectors capitalising on changes in global supply chains. The government has already identified the agrochemicals industry as one of the 12 Champion sectors to watch, and by 2026, the agrochemicals market is projected to grow to a valuation of around $7.4 billion.

Naïve panel: It refers to the sensory evaluation panel that has not been trained specifically regarding the product evaluation being undertaken in the study.

Nano technology: It is the art of manipulating materials on an atomic or molecular scale to build microscopic devices. The word “nano’ meaning ‘dwarf” in Greek language refers to dimension / magnitude of the material / particle in the order of 109. Nanotechnology is nothing but manipulating of particles into very small particles called nano-particles. These particles have dimensions in the scale of nano-meter and used to design / build materials and devices. Nanotechnology has been provisionally defined as relating to materials, systems and processes which operate at a scale of 100 nanometers (nm) or less. Nanotechnology is an anticipated manufacturing technology that allows through and inexpensive control of the structure of matter by working with atom. It will allow many things to be manufactured at low cost and with no pollution. The concept of nanotechnology was first given by Nobel Laureate physicist Richard P. Feynman in Southern California in 1959. Nanotechnology is sometimes termed as Molecular Manufacturing based nanotechnology “MNT”.

Aplasia/Agenesis

Aplasia or agenesis is absence of any organ (Fig. 9.1).

Hypoplasia

Hypoplasia is failure of an organ/tissue to attain its full size (Fig. 9.1).

Etiology

• Congenital anomalies e.g. hypoplasia of kidneys in calves.

• Inadequate innervation.

• Inadequate blood supply.

• Malnutrition.

• Infections e.g. cerebral hypoplasia in bovine viral diarrhoea.

1. The term extension is __________ word. (Latin)
2. _____________ is the father of extension. (Leagnes)
3. The term extension was first used in _____________. (U.K.)
4. The goal of the extension is to promote ______________. (Scientific out-look)
5. The success of rural projects depends upon ______________. (Agricultural Extension)
6. The National Extension Service was started in the year ___________. (2nd Oct., 1953)
7. Training of Rural Youth for self employment was started in the year _____________. (1980)
8. Agriculture extension was first started in ________________. (Bihar Agricultural University, Sabour)
9. T & V programme was introduced in ____________. (1974)

Mercury, a heavy metal, is present vi. Various forms and is well known for its toxic effects especially on human health. Mercury occurs naturally vin the environment through volcanic eruptions, weathering of rocks and forest fires. It can be observed in soil, water and the atmosphere. Human activities such as mining, industrial processes (eg. Coal Combustion, chor alkali production) and improper disposal of mercury containing products contribute to environmental contamination. Mercury can be absorbed through inhalation ingestion or skin contact. Once absorbed, mercury distributes throughout the body, crossing g the blood brain barrier and placenta. Inorganic mercury is partly metabolized to organic forms, such as methyl mercury, by micro organisms in environment. Mercury is excreted via Urine and feces. Mercury disrupts neuronal function by interfering with neurotransmitter signalling pathways, cognitive function, motor coordination and sensory perception Mercury accumulates in the kidneys, causing tubular necrosis. Proteinuria and renal failure. Clinical signs and symptoms are tremors memory loss, nausea, vomiting, hypertension and chest pain. Diagnosis is based on medical history, physical examination, blood, Urine, hair tests and neuro imaging techniques namely MRI or CT scans. Treatment is based on chelation therapy. Finally it is concluded that understanding the sources, toxico kinetics, toxico dynamics clinical manifestations and treatment options is critical for effective management and prevention of mercury toxicity.

Introduction

“Invest in Women: Accelerate Progress” -the theme of the International Women’s Day 2024 celebrated by the United Nations and multiple organizations across the world highlighted the need of review of different works and efforts in bringing gender equality in various development departmentsincluding agriculture and allied sectors. This reflects the importance being given to the efforts towards gender equality at the highest level.

Agrifood systems are a major employer of women globally and constitute a more important source of livelihood for women than for men in many countries. Empowering women and closing gender gaps in agrifood systems thus, enhances the well-being of women and their households, reducing hunger, boosting incomes and strengthening resilience.Increasing women’s empowerment is essential for women’s well-being and has a positive impact on agricultural production, food security, diets and child nutrition. Also,the gender-transformative approaches to change restrictive social norms are cost effective and have high returns, but morework is needed on developing pathways to implement gender-transformative approaches.

With the recent advances in cognitive science and applied ethology, it become imperative to assess the effect of various negative stimuli on the animal welfare and meat quality in goats during slaughter. The present study was designed to assess the effect of exposure of goats to slaughter ambient such as the smell of blood, vocalization, noise, movement of equipment, and unfamiliar workers could initiate stress responses, thereby affecting animal welfare and meat quality. Boer cross bucks (age 8-12 months of age, 25-30 kg live weight, n=18) were halal slaughtered into three groups viz., Control (slaughtered alone), E (exposed to act of slaughter), and S (slaughtered in front of E). The vocalization and avoidance behavior were present in 50% of goats upon exposure to slaughter ambient. The time to death and bleed out percentage did not differ significantly among treatments. The exposure of the goats to the slaughter resulted in a significant (p<0.05) increase in the nor-adrenaline, and β-endorphin. Based on the present study, it can be concluded that exposure to slaughter ambient had an effect on behavioral responses, carcass, and blood biochemical factors. Thus, the present study highlighted the issue of emotional stress and slaughter empathy in goats. These findings could help in harmonizing all practices of slaughter and improving animal welfare while fulfilling religious and customary demands.

Disease
Disease is one of those terms that are very difficult to define. It is realized that disease (literally dis-ease) implies lack of ‘comfort’and therefore, involves deviation from normal functioning. From time to time several definitions which have been proposed, in fact descriptive but not simultaneously exclusive. The definitions for the term disease are:
• Disease is a malfunctioning process that is caused by continuous irritation, which results in some suffering producing symptoms.
• Disease is an alteration in one or more of the ordered sequential series of physiological processes culminating in a loss of coordination of energy utilization in a plant as a result of the continuous irritation from    the presence or absence of some factor or agent.
• Disease is any morphological or physiological abnormality in a plant or any of its parts caused by continuous irritation and results in economic losses to human beings.
• Any deviation from normal growth or structure of plants that is sufficiently pronounced and permanent to produce visible symptoms or to impair quality and economic value.
• A plant is said to be diseased when there is a harmful deviation from normal functioning of physiological process .

Parasitism
The term parasitism refers to a parasite’s taking of food from its host. Without chlorophyll, fungi are unable to synthesis their own sources of food. Fungi are classified into three main biological groups according on the basis of mode of the nutrient uptake . Parasites, Saprophytes and Symbionts, The term saprophytes, or saprobes, refers to those fungi that feed on dead and decaying organic matter (Gr. sapros rotten + bios life). Some of them have evolved farther, but they are still unable to grow on other living things and can only exist as saprobes. We refer to them as obligate saprophytes(L. Obligare = to bind sapros) . On the other hand, some species live as saprophytes, but under certain circumstances, they can infect another living entity. We refer to them as facultative parasites (Greek parasitos + Latin facultas ability). Many fungus infect living hosts and deprive them of their food. They are called parasites (Greek: parasitos, which means to eat beside). Additionally, a few of them developed into facultative soprophytes (L. facultatas ability + Gr. sapros) after diverging as obligatory parasites (L. Obligar? to bind + Gr. parasitos table mate). Obligate parasites can only grow in culture on living media; in the wild, they can only feed on living protoplasm. On the other hand, facultative saprophytes are basically parasitic organisms but also capable of growing on dead organic matter under some conditions.

Introduction
The goal of plant disease management is to reduce the economic and aesthetic damage caused by plant diseases. Conventionally, this has been called plant disease control, but current social and environmental values believe “control” as being absolute and the term too rigid. More multifaceted approaches to disease management, and integrated disease management, have resulted from
this shift in attitude, however. Single often severe measures such as pesticide applications, soil fumigation or burning are no longer in common use. Further, disease management measures are often determined by disease forecasting or disease modeling rather than on either a calendar or prescription basis. Disease management might be viewed as proactive whereas disease control is reactive,
although it is often difficult to distinguish between the two concepts, especially in the application of specific measures.
Plant disease management practices rely on anticipating occurrence of disease and attacking vulnerable points in the disease cycle (i.e., weak links in the infection chain). Therefore, correct diagnosis of a disease is necessary to identify the pathogen, which is the real target of any disease management program. A thorough understanding of the disease cycle, including climatic and other environmental factors that influence the cycle, and cultural requirements of the host plant, are essential to effective management of any disease.

Natural farming is gaining prominence in India as a sustainable and environmentally friendly method for cultivating cereals and pulses. This approach eliminates the use of chemical fertilizers and pesticides, instead depending on ageold practices, natural biological processes, and locally sourced organic materials. Crops like rice, wheat, millets, pigeon pea, chickpea, green gram, and black gram are key staples in the Indian diet, and natural farming offers a promising route to enhance both environmental health and farmer well-being.
At the core of natural farming is the focus on soil health, maintained through techniques such as mulching, crop rotation, and the use of traditional inputs like jeevamrit, beejamrit, and ghanjeevamrit. These mixtures—prepared using cow dung, urine, jaggery, pulse flour, and local soil—boost microbial activity, improving nutrient absorption and resistance to disease. Cereals benefit from proper soil moisture through waaphasa (aerated soil) and mulching, while pulses, which naturally fix nitrogen, thrive without synthetic additives.
Weeds are controlled manually or with natural solutions like agniastra, and pests are managed using plant-based formulations and cow urine sprays. Intercropping cereals with pulses enhances soil fertility, deters pests, and optimizes land usage. Farmers in states such as Andhra Pradesh, Maharashtra, and Karnataka have reported better soil health, lower input costs, and increased climate resilience through natural farming. As consumer interest in pesticide-free grains and pulses rises, farmers are also experiencing better market prices. With growing institutional support and public awareness, natural farming is emerging as a strong alternative for promoting food security, environmental sustainability, and rural development in India.

Natural farming in India adopts a preventive and ecosystem-based approach to pest and disease management, prioritizing ecological harmony over chemical control. Rather than eradicating pests, the aim is to regulate their populations through natural mechanisms and enhance the farm’s biological resilience.
Natural farmers commonly use plant-based formulations such as Agniastra, Brahmastra, and Neemastra. These are prepared from locally available herbs, cow urine, and cow dung, and serve as effective insecticidal and antifungal sprays. Neem (Azadirachta indica) plays a central role due to its wide-ranging pestrepelling properties and is a staple in fermented bio-sprays. Practices like crop
rotation, intercropping, and companion planting help disrupt pest life cycles and minimize disease occurrence. Crops like marigold deter nematodes and aphids, while plants like basil and turmeric suppress fungal infections. These practices also promote the presence of beneficial insects and pollinators, contributing to natural pest control.
A key strategy in natural farming is enhancing soil health through inputs like Jeevamrit, compost, and fermented plant extracts. These boost microbial activity, which in turn suppresses soil-borne pathogens and strengthens plant
immunity. Waaphasa—ensuring proper soil aeration—helps prevent root diseases by maintaining an optimal air-moisture balance in the rhizosphere.
Regular field inspection and sanitation help in early detection of pest issues. Timely weeding and residue management further reduce disease spread. Immediate application of natural deterrents can prevent outbreaks from escalating.

Natural farming in India is increasingly being recognized not just for its ecological integrity but also for its potential to enhance farmer incomes through systematic certification, innovative marketing, and value-added processing. Together, these elements form a vital support framework for scaling natural farming as a sustainable livelihood model.
While natural farming is rooted in chemical-free traditional practices, certification mechanisms like the Participatory Guarantee System (PGS) and thirdparty organic certifications provide formal recognition. These certifications— backed by government agencies and NGOs—enhance credibility, assure consumers of product authenticity, and allow farmers to label their produce as
natural or organic. This certification enables access to niche, premium markets where consumers are willing to pay more for sustainable and safe food options.
Marketing remains a key challenge but also a promising frontier. Traditional supply chains often fail to acknowledge the ecological value of natural produce. Direct-to-consumer sales, farmers’ markets, and online platforms like Jaivik Kheti are bridging this gap, offering better price realization. Farmer Producer Organizations (FPOs) further strengthen the position of natural farmers by enabling bulk marketing, logistics management, and improved price negotiation.
Value addition transforms raw produce into market-ready goods such as  pickles, flours, oils, and herbal teas, significantly enhancing profitability. These products appeal to health-conscious consumers and often command premium prices. Many on-farm processing units are run by rural women’s self-help groups, thereby creating jobs and empowering local communities.

A family of about 236 genera and 7,200 species, Labiatae are cosmopolitan in their distribution and their chief centre is the Mediterranean region. About 65 genera and over 400 species have been reported from India, mainly distributed in North Western parts of India and southern parts of India. Some largely represented genera along with the approximate number of their worldover reported species and common names of some of them are Salvia (500-700, sage), Hyptis (400), Thymus (300-400, thyme), Teucrium (300, germander), Stachys (300), Scutellaria (200, skullcap), Coleus (200, Jacob’s coat), Ocimum (150, basil), Nepeta (150, catnip), Lavendula (28, lavender), Mentha (25, mint) and Rosmarinus (3, rosemary).
Salvia is a tender herbaceous annual or perennial plant and cultivated as bedding plant in many countries. Owing to its adaptability, self sowing ability and handsome appearance, it has been introduced and commanded all over the world. Salvia species have long history of utilization as medicinal herbs. The therapeutic value of this crop is widely recognized in traditional Chinese medicine for various ailments. Some species are strongly aromatic having
horticultural, commercial and medicinal values.

A thorough knowledge of bee biology and colony organization is crucial for practicing sustainable beekeeping, particularly within natural farming systems that rely on minimal interference. Honeybees are social creatures that thrive in complex, cooperative colonies characterized by a structured division of labor. A standard honeybee colony includes three types of adult bees—queen, workers, and drones—each with specific biological and functional roles. The queen, as the only reproductive female, lays thousands of eggs and emits pheromones that maintain order and harmony in the hive. Worker bees, which are sterile females, form the majority of the colony and are responsible for tasks such as cleaning, brood care, comb construction, hive defense, and foraging for nectar, pollen, propolis, and water. Drones, the male bees, primarily serve the purpose of mating with a virgin queen and are usually removed from the hive during winter or resource shortages.

The colony’s internal structure is equally intricate. Bees construct wax combs made of hexagonal cells that serve as nurseries for brood, storage for pollen (bee bread), and reservoirs for honey. Brood development progresses through four stages: egg, larva, pupa, and adult. Worker bees actively regulate environmental conditions like temperature and humidity to ensure optimal brood health. Natural colonies operate with remarkable cohesion, where each bee contributes to the overall survival and success of the hive. This collective organization highlights honeybees as symbols of biological efficiency and mutual dependence.

One of the most significant natural resources is water. The water cycle sustains hydrological systems, which give rise to rivers and lakes and a range of aquatic habitats, through evaporation and precipitation. Only 3% of the water on Earth is freshwater, although making up 70% of the planet’s surface. Just 1% of this is useable water found in rivers, lakes, and subsurface aquifers, while 2% of it is represented by polar ice caps. Approximately 25% of water is used for industry globally, 70% of it for agriculture, and only 5% for residential consumption. In India, 7% is used for industry, 90% is used for agriculture, and 3% is used for household use. World Water Day is on March 22nd.
There are five oceans on Earth. oceans: the Pacific, Indian, Atlantic, Arctic, and Southern. One of the main saltwater bodies in the hydrosphere is called an ocean. The average salinity of the ocean is around 35 parts per thousand (ppt), or 3.5%. A river is a naturally occurring waterway that is longer than 18 meters (60 feet), usually freshwater, that flows toward one or more rivers, lakes, seas, or oceans. A component of the hydrological cycle are rivers.
A steam is a current-filled body of water that is contained between the banks of a stream and a bed. Typically, the watercourse’s width is under eighteen meters. It reunites disparate environments. Creeks are tributaries of streams that join rivers or other streams but do not flow into the ocean.
A lake, derived from the Latin lacus, is an inland body of water that receives waterfrom a river and is deeper and larger than a pond.

The Resource of Land
One limited natural resource is land. The resource-generating regions found in terrain forms such as hills, valleys, plains, river basins, and wetlands are essential to the livelihood of the inhabitants. An ordered combination of minerals, organic matter, living things, air, and water is called soil. The soil is bound together by grass and tree roots. Land becomes unproductive and turns into wasteland when trees are reduced in size or grasslands are overgrazed.
Land is a valuable resource because it supplies the necessary substrate for the growth of vegetation, forestry, agriculture, and other industries. Approximately 54% of India’s land is used for agriculture. Land is necessary for man to construct dwellings, cultivate food, maintain pastures for domesticated animals, create towns and cities to support industries, and develop industries to produce things.
Degradation of Land
It can be characterized as any alteration to the land that lowers its quality or condition and, consequently, its capacity for yield. It happens anytime human activity alters the natural equilibrium of the environment through abuse or overuse. The main issues with land degradation are:
• Erosion by wind
• Water erosion including large-scale hillside movement
• Salinity of dry terrain
• The salinity caused by irrigation
• Surface scorching of soil
• Logging using water

Backyard poultry rearing plays a vital role in natural farming systems, offering rural households a steady source of eggs, meat, and supplementary income with minimal financial input. This practice emphasizes the use of natural, locally available feed resources, avoiding dependence on commercial feeds or synthetic additives such as antibiotics.
In such systems, the poultry diet largely comprises kitchen leftovers, farmsourced grains, green leafy plants, and insects. Birds are typically allowed to forage freely, enabling them to consume a diverse range of natural items like worms, seeds, and tender greens. This scavenging behavior supports their nutritional needs by naturally providing proteins, minerals, and essential vitamins necessary for optimal growth and egg production.
To enhance their diet, farmers often include cereals such as maize, sorghum, and millet, along with protein-rich additions like pulses and oilseed cakes. Green fodders—particularly nutrient-dense options like moringa and amaranth leaves— are commonly supplied to boost vitamin and mineral intake.
Natural immunity boosters such as turmeric, neem leaves, and garlic are frequently incorporated into the birds’ feed or drinking water. These traditional herbal additives help strengthen resistance to disease, support digestion, and reduce parasitic loads. In some cases, fermented mixtures prepared from ingredients like cow dung and jaggery—resembling Jeevamrit—are provided to support gut health through probiotic action.
Providing clean, fresh water remains fundamental to maintaining poultry health. Feeding regimens are adapted to seasonal conditions, ensuring that nutritional requirements are met during periods of increased egg production or breeding.

In the Indian aquaculture sector, the rising frequency of disease outbreaks caused by bacterial, viral, fungal, and parasitic pathogens has necessitated the adoption of advanced molecular diagnostic techniques. Traditional methods, though useful, often lack the sensitivity required for detecting low pathogen loads or distinguishing between closely related strains. To address these limitations, molecular diagnostics have become integral to enhancing fish health management across diverse aquaculture environments—freshwater, brackishwater, and marine systems.
Among these tools, Polymerase Chain Reaction (PCR) is one of the most widely adopted techniques. PCR is both highly sensitive and specific, capable of detecting trace amounts of pathogen DNA or RNA from biological samples such as tissues, mucus, blood, and even environmental matrices like water and sediment. Organizations like ICAR-CIBA, ICAR-CIFA, and various state fisheries universities routinely employ PCR and quantitative real-time PCR (qPCR) to detect viral infections including White Spot Syndrome Virus (WSSV) in shrimp, Koi Herpesvirus (KHV) in ornamental fish, and Nodavirus in marine finfish like groupers and sea bass.

Effective disease surveillance and interpretation of laboratory reports are essential for maintaining fish health and ensuring early disease detection and response. This involves systematically collecting, analyzing, and interpreting health-related data. It includes tracking known pathogens, identifying new or exotic agents, and assessing both the host population and surrounding environment. A structured framework—comprising hazard identification, risk assessment, and risk management—is key to reducing the impact of disease outbreaks.
Laboratory techniques such as PCR, ELISA, histopathology, and microbial cultures provide critical insights into the type, presence, and intensity of infections. However, their usefulness hinges on accurate interpretation. Understanding diagnostic metrics—like Ct values in PCR tests, lesion characteristics from histopathology, or bacterial counts from cultures—is crucial. Farmers, fishery officers, and aquatic health experts need training to relate lab results to visible symptoms, environmental conditions, and farm history for informed decisionmaking.
In India, institutions such as ICAR, the National Fisheries Development Board (NFDB), and various state fisheries departments are increasingly prioritizing disease surveillance. Surveillance can be passive (reporting observed outbreaks) or active (regular testing regardless of visible symptoms). These efforts help detect early warning signs, monitor trends, identify hotspots, and support regional or national disease control plans.

Integrated Fish Farming (IFF) promotes sustainability through efficient waste recycling by utilizing the waste generated by one component of the system as a resource for another. For example, fish waste can be used as fertilizer for crops, while crops can serve as feed for fish. This closed-loop system reduces reliance on external inputs, minimizes waste, and improves water quality.
Integrated fish farming systems—where aquaculture is combined with livestock, crop production, horticulture, or poultry—rely on efficient waste recycling to drive both productivity and environmental stewardship. By turning “wastes” into resources, these systems achieve a circular economy on the farm, minimizing external inputs, reducing pollution, and enhancing overall sustainability.
CIRCULAR BIO-ECONOMY APPROACH
A circular bio-economy approach in integrated fish farming emphasizes optimal resource use and minimal waste by converting byproducts and waste streams into valuable resources. This model supports sustainability and minimizes environmental impact by transforming waste from one component into inputs for another.
Why Is Waste Management Vital in Aquaculture?
Fish farming generates organic waste that, if unmanaged, can harm ecosystems. Excess nutrients in water bodies can trigger harmful algal blooms, reduce oxygen levels, and upset ecological balance. Additionally, improper waste disposal can degrade water quality, heightening the risk of disease outbreaks and compromising fish health.
Effective waste management enhances both environmental and operational outcomes. By handling waste responsibly, fish farmers boost productivity and ensure long-term sustainability of their farming systems.

A rotavator, also known as a Rotary Tiller, is a tractor-powered tillage tool used for oil cultivation. It works by cutting, mixing, and pulverizing the soil through a series of rotating blades. This tool is an affordable and efficient option for seedbed preparation and can replace equipment like disc harrows, cultivators, and levelers.
The rotavator features spinning blades that break through the soil, powered by the tractor’s PTO. It increases soil structure by breaking up clods, improving water absorption, and eliminating weeds and crop residue. Compared to a plough, a rotavator allows farmers to prepare land for sowing in fewer passes. As a powered machine, it ensures optimal soil conditions while helping to control pests and prevent crop diseases.
A rotavator or a rotary tiller is one of the most efficient tools used in modernday agriculture. It uses rotating blades and advanced machinery to pulverize the soil. According to several case studies, rotavators are considered one of the best economical and effective tools for soil bed preparation.

Root harvesting equipment is useful in harvesting root crops such as potatoes, carrots, beets, turnips, onions, sweet potatoes, and other underground crops. These machines are designed to dig, lift, and separate the roots from the soil while minimizing damage to the crops. Root harvesting equipment can vary in size and design depending on the crop being harvested and the scale of the operation. Here’s an overview of the different types of root harvesting equipment and their features:
VARIANTS OF ROOT HARVESTING EQUIPMENT
Potato Harvesters
• Two-Row Potato Harvesters: These machines are designed to harvest two rows of potatoes at a time. They dig up the potatoes from the soil, separate the soil, and lift the potatoes onto a conveyor system for sorting and further processing.
• Single-Row Potato Harvesters: These are typically smaller machines used for smaller fields or specialized crops. They work similarly to two-row harvesters but are designed for single-row efficiency.
• Self-Propelled Potato Harvesters: These are large, fully mechanized machines capable of harvesting large fields. They often come with additional features like sorting tables and storage bins.
• Trailed Potato Harvesters: These harvesters are attached to a tractor and are commonly used for medium to large-scale potato operations. They consist of digging units, separation mechanisms, and conveyors to lift and transport potatoes.

INTRODUCTION
The fuel system in a tractor engine is essential for maintaining efficient engine operation by ensuring clean and well-regulated fuel is delivered to the combustion chamber for optimal performance. Proper upkeep of this system, including regular checks on fuel filters, lines, and pumps, helps extend the engine’s lifespan and guarantees smooth operation during demanding agricultural tasks. The fuel system plays a key role in supplying the engine with precisely regulated fuel for combustion. Core components like the fuel pump, fuel filter, and fuel injectors work together to deliver the right quantity of fuel at the appropriate time, ensuring the engine operates efficiently, performs reliably, and lasts longer.
FUEL PUMP
The fuel pump is responsible for drawing fuel from the fuel tank and delivering it to the engine at the correct pressure. It ensures a consistent and reliable flow of fuel to the fuel injectors or carburetor.
Types of Fuel Pumps
• Mechanical Fuel Pump: Common in older tractors, this pump is usually driven by the engine through a gear or camshaft. It delivers fuel from the tank to the fuel system at a steady pressure.
• Electric Fuel Pump: Found in modern tractors, electric pumps are powered by the tractor’s electrical system and provide more consistent pressure and flow. These are often located near the fuel tank and can be activated by a relay or switch.

INTRODUCTION
The brake is a crucial component used to stop or slow down the movement of a tractor. It is typically mounted on the driving axle and is controlled by two independent pedals. Each pedal can be operated separately to help with turning the tractor during field operations, or they can be locked together using a locking mechanism. The two main types of brakes are: a) Mechanical brake, and b) Hydraulic brake.
The braking system plays a critical role in the transmission system of a tractor, as it is responsible for slowing down or halting the tractor’s movement. Brakes function by converting the kinetic energy of the moving tractor into heat through friction between a rotating and a stationary component. Let’s explore the commonly used braking systems in tractors.

INTRODUCTION
Hitching and detaching implements from a tractor is a crucial aspect of tractor operation, whether in agricultural, industrial, or construction work. This process involves attaching various implements, such as plows, harrows, or trailers, to the tractor’s hitch system, ensuring proper functionality during operation, and safely detaching them once the task is completed. Mastering the correct procedures for hitching and detaching is vital for safety, operational efficiency, and preserving the tractor and implement lifespan.
The tractor hitch system plays an essential role in connecting the prime mover (tractor) to the implement, creating a cohesive working unit. Both the tractor and the implement rely on each other to perform, much like the two wheels of a cart.
A “hitch” is defined as a single articulated point or a combination of points and links that allow the tractor to exert tractive effort in the form of pushing or pulling to counteract the draft force of the implement. The hitch point, whether virtual or real, represents the specific location on the tractor through which the “line of push” must pass to ensure effective operation. Proper understanding of this system ensures smooth, safe, and efficient work.
HITCHING IMPLEMENTS TO THE TRACTOR
Hitching implements to a tractor is an essential process, and the method can vary depending on the type of implement being used. The most common method involves using two hydraulic arms and a third high point to attach and level the implement. The hydraulic arms serve as the main tie-down, allowing the implement to be raised or lowered, while the third point is connected through a double-nut bar, which can adjust the length of the tie-down. For larger tractors or implements, this third point can also be hydraulic for easier adjustment. An alternative coupling method is the cup and pin system, commonly used for trailers, balers, or tanks, where a pin is driven through the tractor’s cup and

INTRODUCTION
Tractors and power tillers have revolutionized modern agriculture, enabling farmers to perform heavy-duty tasks with greater efficiency and precision. These machines have become indispensable tools for planting, harvesting, and tilling, contributing significantly to increased productivity in the agricultural sector. However, despite their immense benefits, tractors and power tillers present substantial safety risks if not operated correctly. The complexity of these machines and the environment in which they operate—often rugged and challenging—can lead to dangerous situations that pose a risk not only to the operator but also to those working nearby.
The safety concerns associated with tractors and power tillers stem from various factors, including the large size and weight of these machines, their powerful engines, and the high-speed operations they are capable of. The potential hazards include rollovers, being caught in moving parts, and accidents involving attachments or implements. Rollover accidents are particularly common and represent one of the most serious risks, with fatal outcomes often resulting from improper handling of the tractor, poor terrain conditions, or lack of proper safety features. In addition to mechanical risks, there are environmental factors such as visibility issues, rough terrain, and unpredictable weather conditions that further complicate the safe operation of tractors and power tillers. It is critical to remember that even experienced operators can fall victim to accidents if they become complacent or ignore basic safety protocols.
This chapter on Safety Rules aims to equip tractor and power tiller operators with the essential knowledge and practices to ensure safe operation. By adhering to established safety guidelines, farmers can protect themselves, their workers

Induced spawning is a widely used method in aquaculture for breeding catfish and exotic fish species. This process involves administering hormones to stimulate the release of eggs and sperm, enabling controlled reproduction in captive environments. Such techniques are particularly effective for species like African catfish and various exotic carps, ensuring reliable propagation and stock maintenance. In aquarium settings, breeding catfish can be both fascinating and educational for hobbyists. With over 150 known species, catfish exhibit diverse breeding behaviors and environmental requirements. Popular species such as Corydoras, Bristlenose, and Ancistrus are favored for home breeding due to their adaptability and relatively simple care needs. Successful breeding begins with replicating the fish’s natural habitat. This includes maintaining appropriate water temperature, using suitable substrates, and providing proper tank configurations. A balanced, high-quality diet is also crucial for encouraging spawning. By understanding and managing these factors, breeders can promote healthy reproduction, ensure the survival of the fry, and enjoy a rewarding aquaculture experience.
MAGUR, PANGASIUS, AND CLARIAS SPP
Breeding techniques for Magur (Clarias batrachus), Pangasius, and Clarias spp. in Indian aquaculture involve induced breeding, often using hormonal injections. Magur and Clarias spp. are typically bred during specific seasons, and the process involves collecting eggs and milt from broodfish, followed by fertilization and incubation. Pangasius breeding also involves induced breeding techniques, with hormone injections to induce spawning

Drones have transformed the agriculture sector, altering farming methods by offering advanced solutions for crop monitoring and management. These unmanned aerial vehicles (UAVs) have several applications that improve production, efficiency, and sustainability. Drones help precision agriculture by allowing farmers to collect real-time data on crop health, soil conditions, and field variability. Drones utilize high-resolution imagery and remote sensing technology to identify early signs of pests, illnesses, and nutrient deficits, facilitating targeted interventions. Drones also facilitate irrigation control, seed sowing, and crop spraying, thereby decreasing labor expenses and mitigating environmental impact. Consequently, drone technology is enabling farmers to make better informed decisions, improve resource utilization, and eventually enhance yields.
REAL-WORLD EXAMPLES OF SUCCESSFUL DRONE APPLICATIONS IN AGRICULTURE
Drones are increasingly being used in agriculture across India to boost productivity, ensure efficient resource use, and reduce environmental impact. In recent years, the Indian agricultural sector has witnessed significant adoption of drone technology, which has proven to be a valuable tool for precision farming. Below are some real-world examples of successful drone applications in Indian agriculture:
Precision Farming for Crop Monitoring
In the states of Maharashtra and Punjab, drones are being used by farmers for precision farming to monitor crop health and growth. The drones, equipped with multispectral sensors, capture detailed images of fields and analyze data on crop health, soil moisture, and pest infestations. One example is AeroFarms, an Indian startup that uses drones to monitor fields and help farmers detect early signs of crop diseases and nutrient deficiencies. By assessing the data from drone imaging

INTRODUCTION
In order to guarantee that the food products produced are safe for consumption, free of contaminants, and prepared in a clean and controlled environment, food safety and hygiene are essential steps in the food production process. Maintaining consumer confidence and preventing foodborne illnesses require following food safety procedures and earning the appropriate certifications.
FOOD SAFETY SYSTEMS AND STANDARDS
HACCP (Hazard Analysis and Critical Control Points)
The HACCP method is a methodical approach to food safety that finds, assesses, and manages risks that are important to food safety. This covers biological, chemical, and physical risks.
Principles of HACCP
• Perform an analysis of the hazards.
• Determine the production process’s critical control points (CCPs).
• Determine critical limits, such as food temperature limits.
• Keep a regular eye on CCPs.
• When boundaries are crossed, set up corrective measures.
• Maintain documentation of observations and actions.
• Regularly review and revise the HACCP plan.
Good Manufacturing Practices (GMP) GMP includes all of the procedures and standards that guarantee food products are produced in a controlled and hygienic setting. GMP emphasizes

A thorough knowledge of bee biology and colony organization is crucial for practicing sustainable beekeeping, particularly within natural farming systems that rely on minimal interference. Honeybees are social creatures that thrive in complex, cooperative colonies characterized by a structured division of labor. A standard honeybee colony includes three types of adult bees—queen, workers, and drones—each with specific biological and functional roles. The queen, as the only reproductive female, lays thousands of eggs and emits pheromones that maintain order and harmony in the hive. Worker bees, which are sterile females, form the majority of the colony and are responsible for tasks such as cleaning, brood care, comb construction, hive defense, and foraging for nectar, pollen, propolis, and water. Drones, the male bees, primarily serve the purpose of mating with a virgin queen and are usually removed from the hive during winter or resource shortages. The colony’s internal structure is equally intricate. Bees construct wax combs made of hexagonal cells that serve as nurseries for brood, storage for pollen (bee bread), and reservoirs for honey. Brood development progresses through four stages: egg, larva, pupa, and adult. Worker bees actively regulate environmental conditions like temperature and humidity to ensure optimal brood health. Natural colonies operate with remarkable cohesion, where each bee contributes to the overall survival and success of the hive. This collective organization highlights honeybees as symbols of biological efficiency and mutual dependence. In natural beekeeping, it is essential to align management practices with the bees’ natural behavior. This includes maintaining a strong, healthy queen, supporting continuous brood rearing, and minimizing disruptions that can stress the colony. Recognizing seasonal patterns such as swarming, queen turnover, and periods of dormancy enables beekeepers to work with nature rather than against it.

The study and utilization of biomass for energy, composting, or other valueadded applications require accurate information about its properties. This begins with a scientifically sound process of sample collection, preparation, and analysis. Each step ensures that the data derived from biomass materials is representative, reliable, and applicable for research, industrial application, or environmental assessment.
Sample Collection
Biomass sampling methods vary depending on the biomass type and the analysis objective. For instance, truck-top sampling is used for biomass pellets, while quadrats are employed to gather cover crop biomass from fields. Regardless of the technique, the primary aim is to collect a representative sample that accurately reflects the overall characteristics of the biomass.
Purpose
The goal is to obtain a sample that accurately represents the average composition and properties of the entire biomass batch.
Biomass Types Commonly Sampled
• Agricultural by-products (e.g., husk, straw, stubble)
• Animal-derived waste (e.g., manure, poultry litter)
• Forest residues (e.g., bark, wood chips) • Organic or food waste
• Industrial biomass (e.g., bagasse, distillery by-products) Sampling Guidelines
• Random Sampling: Collect from multiple locations within a pile or batch to reduce sampling bias.
• Quantity: Gather a sufficient amount—typically several kilograms—based on whether physical, chemical, or energy content analysis is intended.
• Equipment: Use clean, non-corrosive tools such as stainless steel or plastic scoops.
• Preservation: Store in sealed containers or bags to maintain sample integrity and prevent contamination or moisture changes.

Collection of Rumen Liquor Rumen fluid/liquor can be collected through various methods such as stomach tube, or rumenocentesis. Collection of rumen fluid in clinical practice is indicated for the diagnosis of reticulo-ruminal diseases as well as for therapeutic transfaunation. Stomach Tube Passing of stomach tube ( Fig.77) is a traditional method of collection of rumen fluid. Passing of stomach tube in bovines is a routine procedure. The animal is restrained in the cattle crush using head bail with or without halter and a rope. Equipment: Flexible stomach tube, water based lubricant, appropriate size mouth gag, vacuum pump,

Effective marketing channels are essential for ensuring the timely availability and accessibility of quality fish feed across India’s diverse aquaculture systems. The distribution network typically involves a multi-tiered structure, including manufacturers, distributors, wholesalers, retailers, and direct-to-farm supply, connecting producers with end-users. The Indian fish feed landscape comprises both large-scale national manufacturers and numerous small and medium-sized regional producers. Large companies often rely on a structured distribution model involving regional distributors and wholesalers who then supply products to retailers, particularly in rural and semi-urban areas. Retailers serve as key intermediaries, not only selling feed but also advising farmers on feeding techniques and aquaculture practices. In several regions, cooperatives, Farmer Producer Organizations (FPOs), and aquaculture clusters help streamline feed supply by utilizing collective bargaining to obtain better prices and ensure quality consistency. Direct sales from manufacturers to large commercial farms are also gaining traction, particularly in intensive and semiintensive aquaculture settings. The rise of digital tools has further enhanced reach—ecommerce platforms and mobile ordering systems are now offering convenient and timely delivery solutions, even to remote locations.

This chapter deals with the principles and applications of serological tests used to detect antigens and antibodies. It distinguishes primary, secondary and tertiary binding tests and explains antibody titre, affinity, avidity, sensitivity and specificity. Important techniques include precipitation, agglutination, complement fixation, neutralization, immunofluorescence, ELISA, radioimmunoassay, Western blotting and the radioallergosorbent test. The chapter also addresses serum decomplementation and the interpretation of positive and negative reactions. These methods are central to the laboratory diagnosis, surveillance and control of infectious diseases. The objective questions enable readers to compare diagnostic techniques and select appropriate tests according to their principles, applications and analytical performance.

Stored-product insects damage grains, cereals, pulses and other commodities, causing quantitative losses and deterioration in food quality and nutritional value. Climate change influences temperature and humidity within storage environments, directly affecting insect development, reproduction, survival and population growth. Warmer conditions may shorten life cycles, increase the number of generations and expand the distribution of important storage pests. Poor storage structures and inadequate pest management further increase these risks, particularly in developing countries. This chapter examines the influence of changing climatic conditions on stored-product pests and emphasizes improved storage design, monitoring, sanitation and climate-adaptive management practices for protecting stored food and maintaining food security.