eChapters

Laboratory animal science (LAS) advances scientific understanding of the care and use of animals that play a key role in research supporting the development of biomedicine. National and provincial laws, regulations, guidelines and standards apply to quality control and licensing, quarantine and infectious disease control, breeding and husbandry, transgenic animals, staff qualifications, animal welfare, imports, exports and transportation.   Regulation and oversight of lab animal use are the responsibility of the National Ministry of Science and Technology, provincial departments of science and technology, and institutional animal care and use committees.

Labile fractions of soil carbon (C) refer to the fraction of soil carbon that are easily altered by microbial activities. These fractions serve as sensitive indicators to changes in management induced soil quality and are grouped under active soil C pool. The method described by Weil et al. (2003)estimates changes in biologically active soil C using a dilute KMnO . This is an improvement over the method used by Blair et al (1995), where a very high concentration (0.333 M) of KMnO₄ was used.

Organic carbon present in soil can be very labile, labile or non-labile. This procedure measures the extent of lability of soil organic carbon through relative degree of oxidation by K₂Cr₂O₇.

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

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.

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

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).

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.

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.

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.

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.

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.

Land capability classification

Introduction: The United States Department of Agriculture (USDA) land classification system is interpretative, using the USDA soil survey map as a basis and classifying the individual soil map units in groups that have similar management requirements. At the highest of categorization, eight soil classes are distinguished, namely, arable lands (I to IV) and non arable lands (V to VIII).

Origin of land capability classification (1933) : The Georgia Piedmont Land Capability Classification (LCC): First U.S. effort to systematically determine the best use of lands by classifying and mapping erosion rates and potential in relation to both physical characteristics and agricultural capacity.

Definition: 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 environment over a long period of time.

Classes: Land capability classification is subdivided into capability class and capability subclass nationally. Some states also use a capability unit.

The capability classification provides three major categories of soil groupings: (1) Capability unit, (2) capability subclass, and (3) capability class.