eChapters

Introduction
 
Animals used for experimental research purpose, which show results resembling to human beings are known as lab animals. They are mostly used because of their small size, lesser feed and space requirement. Furthermore, they are not natural host for most of the animal / human pathogens. The laboratory animal research is conducted at universities, medical colleges, pharmaceutical companies, farms, defense establishments and commercial facilities that provide animal-testing services to industry. It includes basic research in the area of genetics, developmental biology, behavioural science etc., as well as applied research in the area of biomedical science, xenotransplantation and drugs including cosmetics testing. Laboratory animals are also used for education, breeding and defense research. The common laboratory animals are mice, rats, hamsters, guinea pigs and rabbits. However, cats, dogs, monkeys, goats, sheep, cattle, pig, horses, fishes etc. can also be utilized as laboratory animals for experimental purpose in biomedical sciences.

The group of animals constantly used in laboratories for general research in all discipline of science is called as laboratory animals. Commonly, it includes rats, mice, rabbits and guinea pigs. However, under certain circumstances, additional animal species like hamsters, non-human primates, amphibians, fowl, sheep and pigs can also be included. This term incorporates traditional laboratory animals, farm animals, wildlife and aquatic animals. Nontraditional animals, inclusive of invertebrate species are also included where they are relevant to the unit’s mission. Generally, these animals come under vertebrate but broadly laboratory animals may be classified in two major groups i.e. laboratory mammals and non-mammalian laboratory animals. The laboratory mammals include mouse, rat, guinea pig, rabbit, cat, dog, ferret, gerbil, bats, hamster, mink and monkey (Rhesus). Beside these mammalians the large domestic animals/livestock are also used as laboratory animals (horse, cow, sheep, goat etc) for fulfilling the demands of various laboratories. Poultry is also used as non-mammalian laboratory animals and Specific Pathogen Free (SPF) chicks are at utmost demand for production and testing of biologicals. The other non-mammalian laboratory animals includes reptiles (tortoise, lizzards and snakes), insects (cockroach, drosophila, house fly, house cricket, locusts, tsetse fly, stablefly etc) pisces (fishes and snails) and amphibians (toad and frog). Laboratory animals have been used extensively for basic research in drug and bacteria screening, toxicology, antibiotic sensitivity testing, animal models of diseases and production/testing of biologicals. Laboratory mammals are also valuable for diagnosis of infectious diseases in man and domestic animals. In this chapter the most commonly used laboratory animals i.e. mice, rats, guinea pigs and rabbits will be discussed.

Several substrates, like proteins (enzymes), are very sensitive to alteration in the concentration of the solution they are placed in. Hence is the importance of a buffer which controls the chemical properties of the medium. Literally a “buffer” has the ability to resist changes in the hydrogen ion concentration. Although, buffers do contain other molecules, that might, in addition to the hydrogen ion concentration, influence the ionic strength, the activity of enzymes, and other parameters of the experiment.

In any biological experiment, appropriate buffer must be selected based on their effect on the experiment. Ideal buffers control pH and ionic strength without interacting adversely with the experiment undertaken. For example, although phosphate is a common buffer, it may not be suited when phosphate is a substrate or product of the reaction being studied. Also, some proteins interact poorly with some buffers. For example, Tris is not ideal as it exhibit high pKa and the large change in pKa when temperature changes, although it is cheap and most proteins are stable in Tris buffers, moreover it seldom reacts with reaction substrates hence, Tris buffer is commonly used in biochemical experiments.

A. Intestinal protozoa Fresh faeces must be used as a sample. The sample must be examined immediately and without refrigeration. Methods of examination 1. Direct smear examination A thin smear of faeces mixed with either water or normal saline (recommended for Trophozoites since they stay intact and motile longer). Select blood-tinged mucus or tiny tissue bits if the faeces are dysenteric. One to two percent of an aqueous eosin solution can be used in place of saline or water, but the oocyst still resist the stain. The viability is examined using the eosin solution. It is possible to employ an iodine solution (which kills protozoa), which allows for the identification and differentiation of the protozoa. It is possible

Molecular biology labo-ratories are becoming very common in every University and research institutes and a good laboratory manners is extremely important as many of the equipments are very expensive and sensitive. Hence familiarity with equipments becomes very crucial before starting any experiment.

Microscope

A microscope can be defined as an optical instrument consisting of a lens or a combination of lenses for getting magnified images of minute objects. A simple microscope is essentially an ordinary magnifying lens held on an adjustable stand. It can give magnification up to 20 times the size of the object.

A compound microscope consists of two separate lens system, the objective and eye piece (ocular) mounted on a holder known as body tube and with adjustment for illuminating the objects. It gives much greater magnification (100 to 1500 times) when compared to a simple microscope.

This chapter introduces the essential components of laboratory work that form the foundation for veterinary parasitology and molecular biology research. A well-equipped laboratory along with proper safety protocols and correctly prepared reagents, is the key to reliable experimental outcomes and a secure working environment.
The following sections describe the standard operating procedures and laboratory biosafety, standard equipment used in research work, and the fundamental principles of solution preparation. These basic laboratory skills are essential prerequisites for the specialised techniques covered in subsequent chapters on veterinary parasitology, molecular biology and bioinformatics. Understanding and applying these foundational concepts allows researchers to maintain experimental consistency, ensure reproducible results, and conduct investigations safely and efficiently. The methods and principles outlined here will be regularly applied throughout the various techniques detailed in this manual, serving as essential knowledge for all laboratory personnel as well short-term visitors.
1.1 Laboratory Standard Operating Procedures and Safety
Laboratory safety is fundamental to protecting personnel, maintaining sample integrity, and ensuring reliable experimental outcomes. This section outlines essential laboratory conduct, safety protocols for personnel and equipment, waste management, and emergency protocols for standard laboratories carrying out diagnostics as well as research.

In the Radiochemical Laboratory

The following are some illustrative recommendation which may be used selected as a guide for setting up working rules :

General

No unnecessary materials should be brought into the laboratory. No unnecessary work should be done there.

Eating, drinking, and the use of cosmetics in the laboratory should be forbidden. Radioactive materials should not be place in milk bottles, soft drink bottles, or other vessels that might be inadvertently used for food purposes.

Record should be kept of radioactivity brought into the building and of its disposition.

The Laboratory Worker is Surrounded by Many Dangers such as from..........

Handling of infectious materials.

Handling of broken glassware.

Accidental spill of corrosive reagents.

Swallowing of corrosive reagents such as concentrated Sulphuric acid,

Hydrochloric acid, sodium hydroxide, trichloroacetic acid etc.

Swallowing of infectious specimen.

Inhalation of poisonous fumes.

Infection in the conduct of necropsies.

Potential hazards in the form of inflammable chemicals and gas leakages.

Introduction
According to the U.S. Food and Drug Administration (FDA), Good Laboratory Practices (GLP) is a quality system that ensures the nonclinical safety studies are appropriately designed, conducted, and documented to generate reliable data. The laboratory techniques are defined as the processes and practices that are recommended for equipment use in the laboratory, while laboratory methods are based on established scientific principles involving biology, chemistry, and physics, and encompass all aspects of the clinical laboratory from testing the amount of cholesterol in blood to analysing DNA to growing microscopic organisms that may be causing an infection. One of the most significant parts of laboratory techniques and laboratory methods is the proper validation of the equipments (old or new equipments) as well as all the testing procedures/ methods (established or newly developed methods). Analytical method validation is a critical process to ensure the quality and safety of products. The objective of the validation of an analytical method is to demonstrate that it is suitable for its intended purpose; the results are authentic and universally acceptable. An analytical method is suitably well considered when the results generated through different method are consistent, reproducible, and thus, reliable.
The validation is required when
• A new method has been developed
• Revision of established method
• Use of established methods in different laboratories and different analysts, etc.
• Comparison of methods required
• When quality control indicates method changes

Haemostasis refers to the physiological process that prevents blood loss following vascular injury while maintaining fluid blood flow within the vascular system. It involves a complex interplay between the vascular endothelium, platelets, coagulation factors, and fibrinolytic proteins. In animals, laboratory tests for haemostasis play a critical role in diagnosing bleeding disorders, monitoring treatment, and investigating hypercoagulable states. This article discusses the principles, applications, and limitations of laboratory tests used to assess haemostasis in animals.
In veterinary medicine, laboratory tests for haemostasis are essential diagnostic tools for identifying bleeding disorders, hypercoagulable states, and monitoring therapeutic interventions. They are crucial in both emergency and routine clinical settings for animals. These tests provide insights into the functionality of primary haemostasis (platelet plug formation), secondary haemostasis (coagulation cascade and fibrin clot formation), and tertiary haemostasis (fibrinolysis and clot breakdown).

2.1 Beakers

Beakers are the one of most important vessels used in laboratory which is made up of heat resistant glass.

They are available in various capacities ranging from 10 to 3000 mL.

For convenience of pouring solution, spout is provided in the beaker.

They are used to perform titrations & for boiling solutions, etc.,

Beakers are constructed in tall and low forms.

Labour economics : The aspects of economics concerned with the supply and demand for labor. This includes factors affecting the participation rate, wage bargaining and organized labor, training, hours and conditions of work, practices concerning hiring, redundancy, labor turnover, migration and the age of retirement.

Labour intensive : A production process that involves comparatively large amounts of labour; the opposite of capital intensive.

Labour market flexibility : A flexible labour market is one in which it is easy and inexpensive for firms to vary the amount of labour they use, including by changing the hours worked by each employee and by changing the number of employees. This often means minimal regulation of the terms of employment (no minimum wage, say) and weak (or no) trade unions. Such flexibility is characterised by its opponents as giving firms all the power, allowing them to fire employees at a moment’s notice and leaving workers feeling insecure.

Labour theory of value : The notion that the value of any good or service depends on how much labour it uses up. First suggested by adam smith, it took a central place in the philosophy of karl marx. Some neo-classical economists disagreed with this theory, arguing that the price of something was independent of how much labour went into producing it and was instead determined solely by supply and demand.

In economics, labour is defined as manual or mental work for acquiring income for their livelihoods. In farming domain, the agriculture labor is defined as labourers who earn their main source of income by working in farms of others for a wage. In this type, labours may classified in three namely skilled, semi skilled and unskilled labours based on their skill sets.

Skilled labour is a type of labour, who is having specific skills like carpentry, black smiths, drivers, masonry etc will be utilized to perform a specific function, and correspondingly their wages will be on the higher side than other two types. 

6.1 Introduction

This chapter describes the development of data logger of agricultural field parameter monitoring system with LabVIEW. The system comprises of two sections- Fields device and data logger. Field device comprises of Arduino, smoke detector (for sensing hazardous gases), soil moisture sensor, temperature sensor, humidity sensor, water level sensor, battery, display unit, 2.4 GHz RF modem. Data logger comprises of Arduino, display unit, 2.4 GHz RF modem, power supply, PC with LabVIEW. The system is designed to monitor the environment and agriculture field parameters. The field device is designed to collect all physical parameters and communicate it to the receiver end with LabVIEW. For establishing communication between two sections 2.4GHz RF modem is used, which can be replaced with any other modem also.Fig.6.1 shows block diagram of field device and Fig.6.2shows block diagram of data logger.Table.6.1 & Table.6.2 shows the component list required to develop the field device and data logger.

Introduction

Enhancing productivity and profitability are two major factors of agricultural growth for the future. Over dependence on monsoon and limited scope for area expansion made agriculture development is critical to generate employment and additional income for the rural poor. Major part of agricultural population is small and marginal farmers who are economically vulnerable and poor. The consequence of inclement weather on crop production affects ultimately livelihoods of farmers. In the changing scenario improvements in farmers’ productivity and profitability, diversification of agriculture have been acknowledged to enhance profit, generate additional employment for rural masses and to conserve the natural resources.

Integration of different component at farm level is the need of hour to enhance the profitability of agriculture production system. Jharkhand state a resource rich state wheremonocroping in rainfed agriculture with small undulated upland is in practice. Rural economy is mixed type where forest produce particularly lac play important role. To enhance rural economy, integration of agriculture with forest based intervention appears to be viable option to enhance profits and productivity of upland which is almost sixty percent of total cultivable land. Even though moisture is available during Rabi free grazing made imperative cultivation of second crop. Continuous aberrant weather demand the inclusion of forest resources to be exploited in diversified and integrated manner as forest interventions require little water.

Introduction

India is an agriculture dominated country. According to the report of the Situation Assessment Survey of Agricultural Households by the NSO, 54.6% of the total workforce is engaged in agriculture and allied sectors which encompasses for 17.8% of India’s total GVA for the year 2019-20. The number of operational holdings in the country is estimated at 14.64 crores (Agriculture Census 2016). As we can see from Figure 1 the operational landholding of Indian farmers is increasing day by day. The average size of operational holdings was 1.15 hectares in 2010-11 which has declined to 1.08 hectares in the year 2015-16 (Agriculture Statistics at a Glance, 2021).

Summary

Lac is a resinous exudation from the body of female scale insect Laccifer lacca Kerr. belongs to family Lacciferidae of phylum Arthropoda, class  Insecta and order Hemiptera. The lac insect lives on native trees in India, China,Thiland, Burma/Myanmar and Malaysia. In India it is chiefly grown on trees like Kusum, “Palas”, and “Ber. It is also purposely cultured on shoots of these tree species. Lac cultivation is an alternative agricultural profession and provides subsidiary source of income for a large number of farmers mainly in Jharkhand, Chhattisgarh, West Bengal, Odisha, North-East states and other parts of the country. India, which is the highest producer of lac, contributes around 55% of the total world requirement followed by China and Thiland. The country exports around 80-90% of its production.

Introduction

Lac, a resinous exudation from female scale insects, has been utilized in India since the Vedic period. Its earliest mention can be traced back to the Atharva Veda, where the insect is referred to as 'Laksha,' and its characteristics and behavior are described. In the renowned Indian epic 'Mahabharata,' there is also a mention of a 'Laksha Griha,' a house made of lac, skillfully constructed by the 'Kauravas' with the help of their architect 'Purocha,' with the malicious intent of setting the 'Pandavas,' their formidable enemies, on fire. The use of lac was well-known to the Greeks and Romans since ancient times. The use of lac was well-known to the Greeks and Romans since ancient times. In Asia, the cultivation of lac insects has a rich history, with indications that it dates back as far as 4000 years in China, where its cultivation coincided with the growth of the silk industry

1. The first scientific account of the lac insect was given by …. . . .

 a) J. Kerr (1782) b) W.Kritz (1882)   

 c) Pamella Britz (1888) d) None of these

 2. The scientific name of lac insect is …. . . .

 a) Tachardia lacca b) Tachardia indica   

 c) Tachardia suzi d) Tachardia essart

 3. Lac is secreted by insects for …. . . .

 a) Feeding b) Reproduction  

 c) Protection from predators d) Both a & b

 4. The life cycle of lac insect takes about …. . . months.

 a) Two months b) Six months   

 c) Ten months d) Twelve months

 5. The life cycle of lac insect consists of …. . . .

 a) Nymph instar b) Pupa   

 c) Adult  d) All of these

Like all snake poisons, Lachesis decomposes the blood rendering it more fluid; hence a haemorrhagic tendency is marked. Purpura, septic states, diphtheria, and other low forms of disease when the system is thoroughly poisoned and the prostration is marked. Delirium tremens with mucfrtrembling and confusion. Very important medicine during menopause and for patients of a melancholic disposition. Diphtheria carriers. Sensation of tension in various parts.

Lachesis treats the worst of throat problems, hot flushes in women during menopause, and diptheric paralysis. It is indicated in high blood pressure with constriction and in heart disease when the face is purple and bloated. Also religious insanity.

As a red inflammation leads us to use Belladonna, so Lachesis is to be thought of when the colour is purple. The face is purple; the eyes are engorged. An inflamed spot is purple and so are the inflamed glands. Ulceration bleeds, blood coagulates and the surface looks purple. There is extreme sensitivity to touch. The throat is purple and not red because the blood under the skin has coagulated. There is nothing like Lachesis if these indications are present.

Biochemical and Physiological Role of Lactation is Tremendous

On a large scale, feed nutrients are converted into milk constituents by considerable biochemical and physiological processes. Ahigh yielder of dairy may produce five times dry matter in the milk, as is present in her own body, during a single lactation. Still there are records of cows, which have produced in a year’s milk over five times the organic matter of their own bodies. Certain other high yielders, which over a life time, have secreted organic matter in the milk equivalent to thirty five times that present in their own tissues. The noteworthy physiological performance is represented in the milk secretion of sownursinga largerlitter.Humanorganismiscapableofproducinganastonishing output of milk. Thefeed provides rawmaterials fromwhichthe milkconstituents are derived. Some of these milk components are synthesized in the udder, for which energy is supplied again byfeed. Therefore, the amount and composition of milk dictates feed requirement.

Lactation is the process of milk secretion by the mammary gland. Milk is one of the most fascinating biological fluid whose role as a nearly complete food in sustaining life processes is well known. Milk provides an essential and highly digestible form of nutrients for the mammalian young during the critical period after birth. Milk also forms the first meal of the mammalian youngs.

Most mammals produce milk according to the requirements for their young one’s. However, man for centuries have selectively bred several animals, so that they produce milk, far in excess of the requirements of their youngs. The excess milk is harvested by man for his own and his children’s nurture. The physiology of the mammary gland or the mechanism of milk secretion forms an important part of the man’s strategy to manipulate it to its own advantage. Milk forms the raw material for the multi million dollar dairy industry all over the world. In India, dairying is the second largest agriculture based industry.

The most important animal domesticated by man for production of milk is undoubtedly the cow. Buffalo as a milk producer is important only in Asia & parts of Africa. In India its importance is as much or even more as compared to the cow in milk production ability. The other important milk producing animals are goat, sheep, camel, yak, and mithun.

The ability to produce milk is dependent on several factors including breed, season, feed etc. Majority of our animals do not conform to any descript type, some 20 per cent of them belong to 26 cattle breeds and 7 buffalo breeds. The major milk producing breed of buffaloes are Murrah and Nili Ravi. The season affects the milk producing ability of domestic animals. In Northern India, cow’s milk production is highest during March and lowest during September. However, the buffalo milk production is highest during October and lowest during June.

1. INTRODUCTION

Amongst the common fermentations employed in food are alcoholic, lactic acid and acetic acid. Lactic acid fermentation is a potent tool of biopreservation of foods by the use of biological means i.e. microorganisms or their metabolites having antimicrobial action. It deals with the extension of storage life and increased safety of edible products by employing natural microflora or their antimicrobial products such as in food fermentation. Though many problems in food processing and microbiological safety of food have diminished, yet these are certainly not eliminated altogether. These include the likelihood of food-related illness and product spoilage in industrialized countries. The increasing consumption of pre-cooked food, prone to temperature abuse, are among the main causes of this scenario. The bacterial pathogens that account for many of these foodborne illness cases include Salmonella, Compylobacter jejuni, Escherichia coli 0157:H7, Listeria monocytogenes, Staphylococcus aureus, and Clostridium botulinum. Until now, approaches to seek improved food safety had relied heavily to find out more efficient chemical preservatives or on the application of more drastic physical treatments (e.g. high temperatures) of food processing. Nevertheless, these types of solutions do have some drawbacks also: the proven toxicity of some of the commonest used chemical preservatives (e.g. nitrites), the alteration of the sensory and nutritional properties of foods (thermal processing) especially recent consumer trends in purchasing and consumption, with demands for safe but minimally processed products without additives.

(Colorimetric Method of Barker and Summerson, 1941)
I. Method for Blood / Plasma
Principle

In this method, glucose and other interfering material of the protein free blood filtrate is removed by the Van Slyke-Salkowski method of treatment with copper sulphate and calcium hydroxide. A part of the resulting solution is heated with concentrated sulphuric acid to convert lactic acid to acetaldehyde, which is then determined by reaction with p-hydroxydiphenyl in the presence of copper ions.

10.1 Lambda Function

Lambda Function or anonymous function in python programming

A lambda function can take any number of arguments, but can only have one expression.

Syntax:

Lambda arguments: expression only single line

The expression is executed and the result is returned.

Example

x=lambda a:a+10

Print(x(5))

Lameness is an important health and production problem in dairy animals because it affects mobility, feeding behaviour, milk production, reproduction and welfare. This chapter focuses on practical evaluation of lameness and identification of the affected limb and underlying lesion. Examination includes observation during standing and walking, assessment of weight bearing, limb manipulation and examination of the foot. Washing the foot, inspecting the interdigital area, coronary band and heel, and using hoof testers can help localize pain. Recognition of abnormal gait and foot lesions enables early intervention and management. Effective lameness assessment is therefore an essential component of dairy herd health.

Lameness in dairy animals is a serious health problem all over the world causing substantial economic losses to dairy industry owing to reduced milk production, reduced reproductive performance, cost of treatment including medicines, increased risk of culling, death, and the development of other diseases. Lameness can be defined as a state of being unable to walk properly because of pain in the limbs or foot. The incidence of lameness in the dairy herd is variable (1 to 50%) depending on the farm. In USA its incidence varies from 13 to 55% (Hoffman et al., 2014; Cook et al., 2016). Lameness may be due to diseases of limb and/or hoof of infectious and/or noninfectious origin. Lameness usually affects hind limbs because of greater load of the body on hind limbs. A lame animal adjusts gait and posture depending on the origin of the pain (foot or upper limb). Clinical signs of lameness include changes in locomotion (e.g. decreased speed, decreased stride, length and tracking, increased abduction,

Lamination and coating techniques are integral to modern food packaging, providing additional layers of protection, functionality, and appeal to the packaging materials. These techniques enhance barrier properties, improve durability, and enable packaging to withstand a range of environmental and mechanical stresses. Lamination typically involves bonding multiple layers of materials to achieve specific characteristics, such as moisture resistance, heat stability, and strength. Coating, on the other hand, adds a surface layer that can enhance properties like grease resistance, sealability, and printability. This chapter explores the various lamination and coating techniques used in food packaging, examining their applications, benefits, and potential limitations.

As you deepen your understanding of aquatic ecosystems, it’s essential to recognize that the ocean and its inhabitants are not isolated entities. They are intricately linked with the atmosphere above. This chapter focuses on a fascinating and directly relevant atmospheric phenomenon for coastal environments: land and sea breezes (Fig. 9.1).
These aren’t just pleasant onshore or offshore flows of air. Land and sea breezes represent a daily cycle of wind patterns driven by the fundamental difference in how land and water absorb and release heat. This seemingly simple process has far-reaching consequences for the nearshore marine environment, influencing everything from the subtle shifts in water temperature and salinity to the crucial distribution of nutrients that underpin the entire marine food web.
For those of you who will be involved in the intricate world of aquaculture, the art and science of fishing, or the vital task of managing our precious marine resources, understanding the dynamics of land and sea breezes will provide you with a powerful lens through which to interpret the daily and localized changes within coastal aquatic ecosystems. This knowledge can inform decisions about optimal fishing times, the placement of aquaculture farms, and the potential impacts of environmental changes.

For efficient nutrient use, most important factors are the timely supply/recycling of adequate amount of nutrients to the production system and its retention and release by soil for timely and ready availability in the root zone for its mobility to the plant in the presence of optimum moisture content in the soil. For keeping the applied nutrients retained in the root zone one has to reduce the soil erosion and leaching losses through technologies available in hand which include direct measures of soil and water conservation and maintain the soil aggregation and porosity through suitable tillage and organic residue recycling. For movement of nutrients into plant system we need to ensure optimum soil moisture content through water management.

Introduction
Land is one of the most valuable natural resources on Earth. However, its significance varies across professions. Engineers view land as a foundation for constructing roads, buildings, and flyovers, whereas agriculturists consider it a medium for cultivating crops. For business professionals, land represents a space for establishing offices and industries. Although “land” and “soil” are sometimes used interchangeably, they are distinct. Land is typically regarded as a two-dimensional surface, while soil is three-dimensional, extending in depth. Another key difference is that land refers to any portion of the Earth’s surface, whereas soil consists of weathered rock materials enriched with essential nutrients, making it capable of supporting plant growth. The utilization of land should be aligned with its potential and limitations. Being a finite resource, land use is not solely determined by human needs but also by its capability. Over the past two decades, land degradation has become a growing concern globally, particularly in India. Land serves multiple purposes, primarily supporting agriculture, pastures, and forestry. A standard soil survey map illustrates the various types of soil that are important and their distribution in relation to other landscape features. These maps are designed to cater to users with diverse needs and, therefore, contain detailed information to highlight essential soil distinctions. For a soil map to be useful, the information it presents must be clearly explained to the user. These explanations are referred to as interpretations. Soil maps can be understood in two ways: (1) by examining the individual soil types showed on the map and (2) by grouping soils that exhibit similar responses to management and treatment. Since there are numerous types of soil, there are also many specific soil interpretations. These interpretations provide users with all the relevant information that a soil map can offer. However, many users require more generalized information than that of individual soil-mapping units. To address this, soils are classified in different ways based on the specific needs of the map users. The composition of these soil groups and the allowable variation

Introduction

Land capability classification is one of the very important issues in terms of sustainable land use. Land is the most valuable natural resource which needs to be harnessed according to its potential. Land use planning and management is a known strategy for achieving sustainable development. A properly prepared land use plan based on sound scientific and technical procedures, and land utilization strategies can summarize rationally the future demands. This accompanied by a strong planning process, where communities and various stakeholders are involved, can strengthen the decision making process on allocation and utilization of land resources. Land capability is referred as suitability of the land based on inherent characteristics of the soil associated land features, and climatic conditions that limit their safe use under agriculture, forestry etc. Land capability classification is a system of grouping soils primarily on the basis of their capability to produce common cultivated crops and pasture plants without deteriorating over a long period of time. The capability classification is one of a number of interpretive groupings of soils made primarily for agricultural purposes, mainly based on the inherent soil characteristics, external land features and climatic factors that limit the use of land for agricultural purposes. The land capability is governed by the different land attributes such as the type of soil, its depth and texture, underlying geology, topography, hydrology, etc. It also includes soil irrigation classes and ground water table position to decide overall suitability of lands for sustained use under irrigation. The classification points out automatically the possibilities and limitations of the climate and soil for each crop and type of agriculture.

A scientific evaluation of the physical characteristics of the land, the properties of the soil, and the management techniques is called land capacity categorization. Understanding potentiality, capacity, and appropriateness for the best possible use of land is the primary goal of land capability categorization. Measuring land capacity provides an objective assessment for land preservation in certain ecological scenarios.

On the one hand, land capacity aids in determining if a piece of land is efficient for a certain use, and on the other, it aids in preventing inappropriate use of the land, which poses a risk of erosion and degrades the quality of the land. Therefore, in order to maximise production, each piece of land’s potential should be assessed taking into account both its pedo-geomorphic characteristics and any constraints resulting from environmental threats. Additionally, under the necessary management practices, capacity categorization allows farmers to use the land appropriately for sustainable output.

ABSTRACT

The lower Shivaliks of Jammu and Kashmir comprise 12% of the total area of Jammu region. The productivity of the soils is not only low but highly unstable. High intensity monsoonal rains coupled with rolling topography, low organic matter and coarse nature of the soils are primarily responsible for soil erosion in the region. Soil loss due to erosion depletes the soil nutrients and, is primarily responsible for land degradation, low productivity and poor economic status of the farmers in the region. Further, the adoption level of the farmers regarding modern conservation techniques is also low. Though soil erosion can be controlled or minimized through agronomical and/or mechanical techniques but agroforestry intervention is one such option which can be used for managing the land in the problematic conditions. Agroforestry systems have proven potential of conserving soil and water besides enrichment of soil through biomass additions. Agroforestry systems, therefore, help curtail soil erosion both by intercepting the rain and minimising its erosivity as well as by reducing the erodibility of the soil. Tree based cropping systems enhance the organic content in soils and therefore, create more stable aggregates, which provide more resistance to erosive forces. The chapter discusses the importance of agroforestry in the fragile Shivaliks of Jammu and Kashmir and suggest how to conserve and restore degraded lands in the region.

Abstract

Land degradation is defined as human induced or natural process that negatively affects the lands to function effectively. It is temporary or permanent lowering of the productive capacity of land (UNEP, 1992). Several definitions of land degradation have been suggested by different authorities to express the degree of deterioration in potential of land in terms of physical, chemical and biological aspects. It has both environmental and economic consequences. The information on land degradation is needed for a variety of purposes such as to improve productivity levels in degraded lands through reclamation programmes, rational land use planning and also to bring more areas under cultivation.

Soil : Soil is a complex and vital natural resource that plays a crucial role in supporting plant life and providing the basis for agriculture. There are many different types of soil, each with its unique characteristics and properties.

Types of Soil: Sandy soil has large particles and does not retain water well

Loamy Soil: A balanced mixture of sand, silt, and clay, considered ideal for plant growth.

Clay soil has tiny particles and holds water tightly, which can lead to poor drainage.

Silt Soil: Silt soil has intermediate-sized particles and retains water well.

Peat Soil: Peat soil is composed of partially decomposed organic matter and can hold a lot of water.

Chalky or Calcareous Soil: Chalky soil contains high levels of calcium carbonate, which can make it alkaline.

Introduction

The work on field drains and farm ditches are essential for providing proper irrigation to the crop. Leveling of field is equally important for smooth operation of various field activities including irrigation. Land grading in irrigated agriculture helps in uniform application of water, better water regulation and saving in irrigation time. Land grading helps in conservation of soil and moisture under rainfed conditions. It provides desired surface drainage under irrigated and rainfed conditions. Land leveling helps in the smooth operation of sowing/planting and harvesting equipment.

10.1 Application Efficiency and Irrigation Uniformity

All irrigation systems have some non-uniformity. This non-uniformity influences yields and irrigation efficiency especially application efficiency. If the net amount of water applied during irrigation is the same as that required to fill the soil water deficit, then because the distribution of water is never perfect, half of the field will receive too much water while the other half will receive too less water. In such a context, a farmer will try to apply more irrigation water to his field so that a larger fraction of the field has an adequate amount. This will tend to have higher percolation and runoff and thereby declining the application efficiency. An alternative to adding extra water is to improve the uniformity of water application. A major advantage when the uniformity is improved is that the amount of deficit in the area under irrigation is reduced and the potential for water logging and salinization is also reduced.

Declining water table and degrading soil health are the major concerns for the current growth rate and sustainability of Indian Agriculture. Thus proper emphasis is being given on the management of irrigation water usage for adequate growth of agriculture. Keeping in view, the need for judicious use of our natural resources, concerted efforts are being made to enlighten the farmers for efficient use of irrigation water at farm level. Generally, in rice-wheat rotation farmers believed that their fields are levelled and needed no further levelling, but this is not true. Most of the fields are not adequately levelled and requires further precision land levelling. The enhancement of water use efficiency and farm productivity at field level is one of the best options to redress the problem of declining water level.

Levelling, smoothing and shaping the field surface is as important to the surface irrigation system and as the design of laterals, manifolds, risers and outlets for sprinkler drip irrigation systems. It is a process for ensuring that the depths and discharge variations over the field are relatively uniform and, as a result, that water distributions in the root zone are also uniform. These field operations are required nearly every cropping season, particularly where substantial cultivation following harvest disrupts the field surface. There are basically two types of land levelling viz. (i) to provide a slope which fits a water supply; and (ii) to level the field to its best possible condition with minimal earth movement. The second one is generally the most feasible one, because land levelling is expensive and large earth movements may leave significant areas of the field without fertile topsoil, and is the most economic approach also.

Soil conservation in hilly areas

Soil erosion is a major problem on hills because of steep slopes. It has been estimated that about 6 million ha of land requires intensive conservation measures in Himalayan and sub-Himalayan regions of Uttar Pradesh, Uttarakhand, Punjab and Himachal Pradesh. Anthropogenic activities like shifting cultivation, deforestation, over grazing accelerate soil erosion in hilly ecosystem.

17.1. What?

The soil is prepared to a fine tilth, which is referred to as land preparation or preparatory cultivation. This enables proper sowing of seeds, planting of seedlings and precise application of fertilizers to the crop. Various implements are used to prepare the land. The basic ones are ploughs, harrows, cultivators or tillers, and land levellers. These implements are manually operated or by animals or tractors. Various improvements have been made to increase the efficiency of each one of the implements by research workers. Many products are also available to suit the local regions and soil condition.

17.2. Plough

It has been the basic implement used for decades in agriculture to open up and invert the soil for initial cultivation. While inverting the soil, it also buries the weeds and the remains of the previous crops and allows them to decay. In the process of inverting, it also aerates the soil. Ploughs were initially used with animal power. Later on, many improved implements with heavy weights have been developed. These are drawn by tractors.

In recent years poverty elimination has become the most important development objective. Introduce the land reforms and laws for the hill areas as per the needs of the tribal people in keeping with the changing times. It is concerned on the social inequality between the advance majority sections of the society and the backward hill people, negligence relating to the roads and transport, health service, electricity, water supply, education, agriculture and sports. It shall strive to protect, safeguard and ensure proper management of the lands, forests and mineral resources of the hill people. As inequality in the distribution of production inputs, especially agricultural land seems to be the main cause of rural poverty and income disparity. A successful redistributive land reform may increase small household production and contribute directly and immediately to reduce poverty and economic inequality. Redistributive land reform has been an increasingly important strategy for both poverty alleviation and socio-economic development. The impetus for land reform is then the possibility of improved social justice and equity. An effective land reform program must boost efficiency and promote equity and so land ownership should be targeted towards those who use it most productively.

The significant marginal value of land of both consumption and income implies that an effective land reform policy could well be the most effective approach to alleviate hills poverty. The study investigates the effect of other complementary factors along with land on consumption and income. These all suggest that programmes of access to land must be packaged as elements of more comprehensive programmes in order to secure the poverty reduction potential of land. This study also analyses the economic relationship between access to land and poverty in hills area by establishing the link between land and consumption as well as land and income. The significant marginal value of land of both consumption and income implies that an effective land reform policy could well be the most effective approach to alleviate rural poverty. So in this paper we would like to trace the problems related with Land reforms in hills area, agriculture development and poverty alleviation. What are the major problems in Land reforms in Hills are and how to cope up with those problem.

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

On the basis of a proposal I had made three years ago, the Food and Agriculture Organisation of the UN (FAO) launched a Global Soil Partnership for Food Security and Climate Change Adaptation and Mitigation at a Multi-stakeholder Conference held in Rome in September 2011. Even with all the advances made in capture and culture fisheries, nearly 90 per cent of human food requirements will have to come from the soil. Land is becoming a diminishing resource for agriculture, inspite of the growing understanding that the future of food security will depend upon the sustainable management of land resources as well as the conservation of prime farm land for agriculture. The National Commission on Farmers emphasised in its report submitted in 2006 the urgent need for replacing the 1894 Land Acquisition Law with a twenty-first century legislation that safeguards the interests of farmers and farming.  Jairam Ramesh is to be complemented for introducing in Parliament a National Land Acquisition and Rehabilitation and Resettlement Bill which pays attention not only to acquisition, but also to the rehabilitation and resettlement of the affected families.

The land is one of the basic natural resources for agricultural growth and development of a country. Investment on agricultural land improvement by way of land leveling, contour bunding, sinking of well for irrigation and resorting to other measures like treating the soil to reduce acidity etc. have been continuous effort of agriculturists for increasing productivity.In addition, new variety of seeds which are high yielding and pest resistant are sought after by farmers for increasing production. Efficient land management encompassing soil and water conservation is the building block for sustainable agricultural development.

Land tenure rules define the ways in which property rights to land are allocated, transferred, used, or managed in a particular society. Ownership of land plays a significant role for improvement of land and its management. If the land is tenanted,the tiller of the land has less stake on long term measures on land.For centuries, the land tenure system in India was based on intermediaries known as Zamindary system.In Odisha, the tenurial system has based on the Bengal Rents Act, the Bengal Tenancy Act, the Bihar & Orissa Tenancy Act and finally, the Orissa Tenancy Act.In addition, theCentral Province Tenancy Act and the Central Province Land Revenue Act were in vogue in the Sambalpur district when the Orissa province was formed. Further, theGanjam district was under the Madras Estates Land Act(MELA). All these laws defined and classified the tenurial system.If one examines the OT Act one would find series of intermediaries between the proprietor and actual tiller of land.Tenure-holders had under-tenure holders. Raiyats had under-Raiyats. Tenants also inducted sub-tenants.

9.1 Planning land use

Modern techniques such as mechanization, better crop varieties, and the scientific use of fertilizers can transform agriculture, but before they can be effective the use of the land has to be right. No techniques will make it possible to grow a good crop if the soil conditions are unsuitable for that crop, and no conservation works can prevent erosion when the basic cause is trying to grow crops on land which is really unsuitable for arable farming (plate 9.1). The object of land use planning is to determine the characteristics of land, its possibilities, and its problems, and try to match these to a form of land use which will be sustainable and economically productive.

9.7.1 Some planning principles

An often quoted definition is that ‘planning is the conscious process of selecting and developing the best course of action to accomplish an objective’. In the case of Land Use Planning the objective is the efficient intensive use of land resources.

It is difficult to imagine any field of human activity where some form of planning is not essential to achieve the objective. Consider going on holiday. Certainly it is possible to come home from work one evening, throw some clothes into a suitcase, go to the railway station or airport and buy a ticket to the first holiday resort which comes to mind. Some fortunate people may indeed enjoy so unplanned a holiday but for most of us it would be disappointing to find oneself in a mountain holiday resort without climbing boots, or on a sunny beach with only winter clothing in the suit case. No, one is more likely to achieve the objective of a happy holiday by a planned approach and this means going through a logical sequence of steps, i.e.