eBook Chapters

Introduction

Social disinterestedness could be an anticipation that applies issues of amends and candor to policy. Aback the Sixties, the anticipation of amusing disinterestedness have been activated in an advance of institutional contexts, calm with apprenticeship and accessible administration. The anticipation of amusing disinterestedness is about afflicted aback to the works of philosopher and Plato. Definitions of amusing disinterestedness will vary, about all focus aloft the ethics of amends and fairness. Disinterestedness in fashionable societies involves the role of accessible directors, United Nations bureau breadth assemblage accountable for authoritative assertive that amusing casework breadth assemblage delivered equitably. This bureau demography into application actual and accepted inequalities a part of groups; candor relies on this amusing and actual context. Amusing and bread-and-butter bigotry has abiding furnishings on societies and as well the bloom of populations. The acceptance from an ample alter of disciplines breadth assemblage acclamation disinterestedness in avant-garde agency that. Solutions alter from acclamation cyber banking accretion aberration to apprenticeship quality, cyber banking action to bent amends reform and affluence of accession disinterestedness problems that anon and alongside accept an aftereffect on animal bloom and well-being. The aggregation seeks to acknowledgment such queries as, will a bigger pay advance superior of action measures, calm with health, nutrition, and ancestor’s circadian life? As added cities ahead hikes in their pay, this assay can acquaint approaching choices apropos the after-effects on staff, their families, employers, and as well the community. An administration of assets, resources, and liabilities a part of the individuals during a nation or association that’s advised accurate and simply. Whereas some accept that bread-and-butter disinterestedness needs that anybody voters pay an agnate quantity, others accept that the abundance paid care to wait aloft the abundance that every accountable will allow to pay while not disproportionate hardship. Put simply, disinterestedness is possession. Aural the affairs world, disinterestedness refers to stock. Aural the accounting and aggregation disposition world, disinterestedness (or added normally, shareholders’ equity) refers to the abundance of basic contributed by the abode owners or the acumen amid a company’s absolute assets and its absolute liabilities. The fashionable era is casual through an alluringly and annealed aggressive laissez-faire abridgement that’s about there’s no acknowledgment to actualize some individuals at an advantage while not creating others worse off. This cessation refutes the claims of ambitious bread-and-butter planners, United Nations bureau assert that markets breadth assemblage disorganized free-for-alls which centralized chief would be added economical. During a class disconnected association the advantages of amusing appear can’t be aggregate appropriately by the all categories of individuals. It’s simple to appetite agitated with the abstraction that markets appreciate appropriate and to again draw inappropriate abstracts apropos policy. It’s basic to arouse that authority is apropos a way to achieve goals; it doesn’t say something apropos what your goals care to be. Locution that the bazaar aftereffect is economical doesn’t beggarly that that aftereffect is about alluring for all the individuals. In fact, in some affairs analive action could advisedly baldest accessory bulk aftereffect that’s not economical.

10.1. Social value

Ideas which help an individual to discriminate whether a particular object or behaviour is good or bad, desirable or undesirable.

Norms: Times rules which govern the action

Normative behavior: People are expected to behave in accordance with the values held by the individual.

S.C. Dood defined the value as “desiderata” i.e., anything desired or chosen by someone, sometime.

Value may be considered as attitude-related attribute that are projected upon people, objects and situations.

The societal implications of nanotechnology are the potential benefits and challenges that the introduction of novelnanotechnological devices and materials may hold for society and human interaction. The term is sometimes expanded to also include nanotechnology’s health and environmental implications, but this article will only consider the social and political implications of nanotechnology.

As nanotechnology is an emerging field andmostof its applications are still speculative, there is much debate about what positive and negative effects that nanotechnology might have.

Beyond the toxicity risks to human health and the environment which are associated with first-generation nanomaterials, nanotechnology has broader societal implications and poses broader social challenges. Social scientistshave suggestedthatnanotechnology’s social issues should be understood and assessed not simply as “downstream” risks or impacts. Rather, the challenges should be factored into “upstream” research and decision making in order to ensure technology development that meets social objectives.

Introduction

Financial inclusion has become a global agenda because it is now well recoganised that a nation can prosper only if it ensures inclusive growth. Financial access and use of formal financial system, the means of financial inclusion, have positive association with inclusive growth (Levine and Demirguc-Kunt, 2008). The financial systems which are more inclusive have provided broader access to appropriate financial services to ensure that the benefit can be availed by poor and disadvantaged sections of the society (Akter, 2016). Since, financial inclusion is the process of ensuring availability of f inancial services and well-timed and sufficient credit as required by vulnerable groups such as low income segment and weaker segment of the society at an affordable cost (Rangarajan Committee on financial inclusion, 2005). Thus, the study of financial inclusion on the basis of socio economic factors is the key to investigate individual characteristics associated with financial inclusion (Allen, Kunt, Klapper, Peria, 2012). Understanding financial usage on the basis of socio economic factors enables framing appropriate financial inclusion strategies to achieve financial inclusion in real sense. Many international agencies like International Monetary Fund, Asian Development Bank, World Bank release data on financial inclusion around the world. Global findex report is published by World Bank after the interval of every three years to present the picture of financial inclusion on various socio economic parameters. Around the world, 74% adults, 72% female, 70% income poorest population, 63% out of labour force population and 66% rural population report to have account at formal financial system (World Bank Global findex report, 2021).

Introduction

Lavender (Lamiaceae family) produces characteristically lavender- coloured (purple) flowers, although pink, white and green forms of some species also exist. There are approximately 20 species of lavenders with hundreds of various genotypes differentiated by variations ranging from morphology to chemical composition of essential oil. Cultivation of lavenders for essential oil is thought to have begun in the 16^th century. Recently there has been an upsurge of interest in lavender as a medicinal herb crop. Lavender is a perennial herb and is a native of the western Mediterranean and the eastern coast of Spain, France, Switzerland, North Italy, Corsica and North Africa. Lavender and lavandin oil have long been the major essential oils produced on the southern slopes of the French Alps. The oil possesses refreshing, sweet aroma and blends with many other essential oils. Therefore, it is widely used in perfumery, cosmetics and medicines.

Introduction

Land serves as storage for water and nutrients for plants and other living organisms, but the land resources are limited. India has about 18% of world’s population and 15% of livestock population to be supported from only 2% geographical area and 1.5% of forest and pasture lands (Rao et al., 2015). The per capita availability of agricultural land has declined from 0.48 hectare in 1951 to 0.16 hectare in 1991 and is likely to decline further to 0.08 hectare in 2035. This decline in per capita land availability in the country is mostly on account of rising population (GOI, 2010). 

4.1 Demographic Profile of Watershed Communities

• Population Distribution: Examining the spatial distribution and density of population within watershed areas, including rural settlements, urban centers, and peri-urban zones. Analyzing population distribution within watershed areas involves understanding how people are distributed across various types of settlements, including rural, urban, and peri urban zones. Here's a breakdown of each:

a. Rural Settlements: These are typically smaller communities dispersed throughout the watershed area, often engaged in agriculture, forestry, or other primary industries. Population density in rural areas tends to be lower compared to urban centers. The distribution of rural settlements can be influenced by factors such as terrain, availability of natural resources, and historical land use patterns.

b. Urban Centers: Urban areas within watershed boundaries consist of cities and towns with higher population densities and more developed infrastructure. These areas are characterized by a concentration of economic activities, services, and amenities. Population distribution within urban centers can vary widely, with some areas experiencing high population density in downtown cores and others having more spread-out suburbs.

Livestock plays a subsidiary role in the farm as far as food production is concerned. Their role in absorbing the huge quantities of crop residues, coarse grains, cereals by-products and farm left-over and returning valuable manure to the soil to sustain their fertility for generation is significant. Livestock in general and dairying in particular is emerging as a driving force in the growth of agricultural sector in India. Dairying is the backbone of the marginal farmers and landless labourers spread over numerous villages scattered throughout the country. It is primary source of income and employment for many of India’s poor. This sector can play an important role in determining future prospects for the employment generation and poverty alleviation in the country.

After the Independence of India, the occupational avenues have undergone a tremendous change. With the spread of education and other amenities of life the traditional occupational structure has considerably changed. The Gujjars who had been a nomadic tribe are extensively becoming sedentary. The Gujjars are one of the important pastoral communities of India. Different social scientists and anthropologists have documented the origin and social aspects of the present Gujjars, who lived a pastoral life. Gujjars have their own Gujri language, which they generally speak among themselves. But they correspond with other people in Urdu generally. The main source of income for Gujjars is dairying. Consumers also prefer milk sold by them, as the quality of milk is good. The role of Gujjars to the rural and urban economy cannot be undermined.

Though information on sociological and anthropological aspects of the pastoral communities has been generated in various studies elsewhere but socio-economic studies are scanty. No concerted efforts have so far been made to study the socio economic of Gujjars, particularly with reference to various important economic parameters like resource structure, family composition, education status, economic status.

The present chapter is an attempt to study the socio economic aspects of one of the well known pastoral communities- the Gujjars of the Jammu district.

Socio-economic impact assessment is an important activity that justifies the implementation and continuation of the project efforts and to enhance the observed ability of the project outcomes. there are several approaches available for assessment of the impact of project interventions. in the present investigation, before or after research design was used for impact assessment.

Socio-economic impact assessment activity, the benchmark survey boss carried out before the initiation of the project. The benchmark survey focused on the socio-economic profile of tribal households in the project area including the landholding, personal profile of the household head, household income, its sources, income source diversity. The survey also focused on the agronomical aspects like the productivity of major crops, cropping intensity and income generation from various farm activities. Further, in the benchmark survey, data was also collected on the aspects related to household food security. The findings of the benchmark survey are presented below.

The dairy sector plays a key role in ending poverty, especially for rural communities. Nearly one billion people earn their livelihood from dairy. Dairy has an important role to end hunger, achieve food security and improve the nutritional value of diets in a sustainable manner. Dairy products contribute to good health and wellbeing at all stages of life. Its nutrient-rich pack ensures a nourished and healthy population. Dairy has been linked to protection against non- communicable diseases. The Indian context for Dairying is an economic symbiosis of crop and cattle population. Livestock plays a pivotal role in the economy; animal husbandry is the most important economic activity in rural areas. The dairy sector today provides eighty million farm households with the triple benefits of nutritive food, supplementary income and productive employment for family labour, mainly for women. 

Introduction

This chapter has analysed the impact of shrimp farming on the farmer households. Income and employment generation being two important aspects, impact of shrimp culture on these two are discussed in this chapter. The income generated through shrimp culture is compared with the income from paddy cultivation. Returns to scale and returns to labour from shrimp culture are discussed to know whether shrimp culture is a preferred activity compared to paddy cultivation or not. Besides, the impact of shrimp farming on asset creation, expenditure pattern and savings behaviour of the sample households has been discussed in this chapter.

Abstract

Knowledge and communication is an important resource for agriculture and can contribute substantially to ensure food security and sustainability by creating awareness and skill development through access to information. The initial and most prominent player of knowledge delivery is public sector extension services, which from past few years, are usually criticized for their ineffective targeting, poor reach and the huge administrative cost of delivering information. Since past few years, the drastic increase in mobile penetration even in rural areas has lead to evolution of ICT-based extension services models to disseminate agriculture related information.

Integrated Fish Farming (IFF) is emerging as a transformative approach in India’s agricultural landscape, particularly for small and marginal farmers. By combining fish culture with agriculture, livestock, poultry, horticulture, and other allied activities, IFF offers a cost-effective and sustainable model that enhances farm productivity and rural livelihoods. With more than 80% of Indian farmers falling into the small and marginal category, many face challenges such as limited land, inconsistent income, and increasing environmental stress. IFF addresses these issues by enabling the efficient recycling of farm waste, thereby minimizing dependence on expensive chemical fertilizers and commercial feeds. This integrated model produces multiple income streams—fish, eggs, vegetables, milk, and manure—ensuring financial stability and nutritional security for farming families. IFF also significantly contributes to employment generation through diverse year-round activities such as pond management, livestock care, and the marketing of farm products. It provides particular opportunities for women and youth in rural areas, helping to reduce underemployment and rural migration. The nutrient-rich food produced through IFF supports public health by addressing malnutrition in underdeveloped regions. India’s extensive water resources, agricultural base, and favorable agroclimatic conditions make it well-positioned to scale up IFF practices. States such as West Bengal, Odisha, Assam, Chhattisgarh, and Bihar have already demonstrated success with combinations like fish + poultry, fish + duck, and fish + paddy systems. Furthermore, support from government schemes such as the Pradhan Mantri Matsya Sampada Yojana (PMMSY) and Rashtriya Krishi Vikas Yojana (RKVY) is accelerating its adoption. As India advances toward climate-resilient and diversified agriculture, IFF stands out as a vital solution for ensuring economic sustainability, food security, and ecological harmony, making it a cornerstone of future rural development.

Introduction

The hot arid zones in India are spread over nearly 31.7 million hectare area of which 41.5 per cent is arable and 19 per cent is cultural wasteland. These zones are perpetuated mainly in North –West and Southern part of the country. The major parts of the country under hot arid climatic conditions are Western Rajasthan (19.62 Million ha), North-western Gujarat (6.2 M. ha), South-western Punjab (1.45 M. ha), South-western Haryana (1.28 M. ha), Andhra Pradesh (2.16 M. ha), Karnataka (0.86 M. ha), and Maharashtra ( 0.13 M. ha). These areas/ zones are characterized by hostile agro-climate and fragile eco-system, an annual rainfall between 100 – 500 mm with a coefficient of variation (CV) varying from 40 – 70 per cent, low and erratic rainfall combined with extremes of temperature (450-500 cal/cm²/day); low relative humidity; high potential evapo-transpiration value ranging from 1600 mm in eastern part and 1800 mm in western part of the hot arid zones. Other important characteristics of the hot arid regions are hot winds with high velocity, poor soil condition, poor ground water with brackish and saline in reaction, poor vegetation, frequent occurrence of drought and frost, difficult to execute agro-techniques, difficulty in post harvest handling and marketing owning to limited and inefficient transportation and marketing facilities, etc (Yadav and Soni, 2008).

Introduction

Onion (Allium cepa L.) is one of the most important commercial vegetable crop cultivated extensively in India and it belongs to the family Alliaceae. It is used both in green and mature stage for salad and spice in a variety of flavoured dishes and soups Onion is liked for its flavour and pungency which is due to the presence of a volatile oil ‘allyl propyl disulphide’- an organic compound rich in sulphur. Onion bulb is a rich source of minerals like phosphorus, calcium and carbohydrates. It also contains protein and vitamin C. It is being used in several ways as a fresh, frozen, dehydrated bulbs and green bunching types. Dehydrated onion is in great demand which reduces transport cost and storage losses. Onion has got good medicinal value. It contains several anti-cancer agents which have shown to prevent cancer in animals. The beneficial compound called ‘quercetin’ present in onion has shown to be powerful antioxidant. Extracts of onion are being used in the prevention of ‘atherosclerosis’ and ‘coronary heart disease’. onion extensive culinary, dietary, therapeutic, trading, income and employment generation value. Onion is commodity of mass consumption and is grown almost all over the country mainly by small and marginal farmers (Shukla and Singh-2018).

A global review of onion area and production revealed that onion is grown in the world in an area of 43.64 lakh hectares with a total production of 873.44 lakh tons and productivity of 21.79 tons/ha. China and India are leading onion growing countries with a total production of 247.00 and 159.40 lakh tons, respectively during the year 2017. India produces around 174 lakh tons of onion annually ranking second in the world. Currently in India the production of onion 31129 million tons with the cultivated of 1914 lakh hectares in 2021-22 observed respectively. Among the different onion growing states Maharashtra tops in area and production. (https://www.districts of india.com).

Introduction

Rice (Oryza sativa L.) is one of the most important cereal grains in the world today and serves as a staple food source for more than half of the world’s particularly in India, China and a number of other countries in Africa and Asia. It occupies an area of about 161 million hectares at global level wi`th production of 503.8 million tones milled basis. More than 90% of the rice is produced and consumed in Asian countries. (FAO United Nation 2017).

Rice provides 21 percent of global human per capita energy and 15% of per capita protein. Although rice protein ranks high in nutritional quality among cereals, protein content is modest. Rice also provides minerals, vitamins, and fiber, although all constituents except carbohydrates are reduced by milling.

Rice commodity recognized as a supreme commodity to mankind, because rice is truly life, culture and tradition. It has its own history and religious importance in human life. India is one of the world’s largest producers of white rice. For India, like many other developing countries, the issue of feeding ever increasing population is of prime importance, this problem can be solved by maximizing agricultural production through use of high yielding varieties and adopting improved package of practices of rice crop. India is facing the challenges of food and fodder production to meet the demand of rising human and cattle population. One of the major causes of this problem is low level of adoption of improved agricultural practices by the farmers. Population www.thecropsite.com

There are three seasons for growing rice in India viz. autumn, winter and summer. The main rice growing season in the country is kharif. It is known as winter rice as per the harvesting time. The sowing time of kharif rice is June – July and it is harvested in September - October. India is an important centre of rice cultivation. The rice is cultivated on the largest areas in India. Historians believe that while the indica variety of rice was first domesticated in the area covering the foothills of the Eastern Himalayas (i.e. North-Eastern India), stretching through Burma, Thailand, Laos, Vietnam and Southern China, while the japonica variety was domesticated from wild rice in Southern China which was introduced to India. Perennial wild rice still grows in Assam and Nepal.

This chapter is framed with different factors relating to socio-economic profile of shrimp farmers in Dhamara coastal zone. Shrimp farming offers significant employment opportunities, which may help alleviate the poverty of the local coastal population in many areas, if it is properly managed. The published literature on that topic shows large discrepancies, and much of the available data is of anecdotal nature. Estimates of the labor-intensiveness of shrimp farms range from about three times less to three times more^] than when the same area was used for rice paddies, with much regional variation and depending on the type of farms surveyed. In general, intensive shrimp farming requires more labour per unit area than extensive farming. Extensive farms cover much more land area and are often but not always located in areas where no agricultural land uses are possible. Supporting industries such as feed production or storage, handling, and trade companies should also not be neglected, even if not all of them are exclusive to shrimp farming.

Typically, workers on a shrimp farm can get better wages than with other employments. A global estimate from one study is that a shrimp farm worker can earn 1.5-3 times as much as in other jobs; a study from India arrived at a salary increase of about 1.6, and a report from Mexico states that the lowest paid job at shrimp farms was paid in 1996 at 1.22 times the average worker salary in the country.

Existing positive as well as negative interactions among the members of the society determine the communication structure, leadership and technology diffusion pattern within the given social system. Sociometry is a method for gathering and analyzing data on communication choice and interaction pattern of individuals, within a group in order to identify communication structure and pattern.

Sodium benzoate is added to many fruit products to act as a preservative for the extension of the shelf life. Food Safety and Standards Regulations have specified the maximum level of sodium benzoate (Benzoic acid) in different products like sauce, ketchup, pickles, squash, etc. Therefore, the estimation of sodium benzoate (benzoic acid) in such products is considered a routine quality control procedure.
Principle
Benzoic acid which is sparingly soluble in water is converted into watersoluble sodium benzoate by the addition of NaOH in a sample containing sodium chloride solution. When the Sodium Benzoate solution is acidified with excess HCl, water-in-soluble benzoic acid is formed which is extracted with chloroform. The chloroform is removed by evaporation and the residue containing benzoic acid is dissolved in alcohol and then titrated with standard NaOH.

Antibiotics have been used since their discovery to cure illness at therapeutic levels and to boost animal feed production at subtherapeutic levels by promoting animal development. Antibiotics have been regarded as necessary additives or supplements for improved growth and preservation of a healthy intestinal ecology in the production of chicken for more than 50 years (Huyghebaert et al., 2011). The Indian government outlawed the use of antibiotics in poultry feed in 2019. (Colistin, for example, is no longer allowed in poultry feed.) As a result, a lot of effort is being put into creating antibiotic substitutes. Alternatives to antibiotics should ideally possess the same advantageous qualities.

 Family: Argasidae
 •The family includes fowl ticks and tampans.
 •The integument is leather like, frequently mammillated and without dorsal shield.
 •Capitulum and mouth parts are situated anteriorly and on ventral side, thus invisible from dorsal side.
 •In general eyes are absent, if present these are two pairs and situated on lateral sides of supracoxal folds.
 •Spiracles are one pair and situated posteriolaterally to the third coxae.
 •Sexual dimorphism is not evident.
 •The important genera are Argas, Otobius and Ornithodoros.

Introduction

For many years it has been an elusive task to provide a precise definition as to what constitutes quality in wheat. Each country has its own traditions in bread and other bakery products. Quality will mean different things to a miller, a baker, a grain handler or a plant breeder. As the baking industry becomes increasingly specialized, specific qualities are sought. Even among those wheat varieties generally recognized as having desirable quality traits, the influence of environment can be substantial, and this necessitates a high level of skill on the part of grain buyers to survey the current year’s crop and blend the wheat for a specific end-use. This genotype X environment effect on quality also limits the capacity of end-users to source identity-preserved wheat from a narrow geographic area. Those of us engaged in the field of plant breeding are concerned primarily with those traits that can be manipulated genetically, and we study their stability under a range of climatic conditions. Constraints in time, cost, and sample availability usually necessitate the use of predictive tests during early generations, followed by milling and baking tests on advanced lines that have met a number of agronomic, disease and predictive quality criteria.

The pressure of population on land is increasing and the average size of a farm holding is reducing, to below one hectare. Farmers are increasingly getting indebted and the temptation to sell prime land for non farm purposes is growing. If there are other opportunities, about 40 per cent of farmers want to quit farming, says a survey conducted by National Sample Survey Organization. We hear deplorable stories of farmers ending their life not being able to cope with the loss and indebtedness from agriculture.
 
On the closer examination, we find that agricultural land is still a great source of income. But it is the practice of unsustainable methods, improper resource management leading to successive crop failure that makes agriculture non-profitable and risky. As a result, many young farmers are leaving agriculture and migrating to cities. Under these conditions, how are we going to persuade educated youth, including farm graduates, to stay  in villages and take to agriculture as a profession? How can youth earn a decent living in villages and help shape the future of our agriculture? At the same time, we also hear the stories of highly educated persons wanting to move into agriculture as their profession.
 
It is a well known fact that the recession had hit the Information Technology sector and the professionals across the globe in a big way. Some of them were ‘sacked’ and even thrown to streets as ‘loss cutting’ measures by the companies. Many qualified software professionals were forced to find an alternative job. But software professional, Sri. Kondana Chandrashekara Gatty, who was in the Information Technology field for nearly 10 years, did not feel the pinch of recession since he had switched over his carrier field from IT to agriculture. 

Introduction

In this computer age software plays a vital role in speeding up the research activity. Software and databases help in storage, processing and accessing large volumes of information. Software helps to retrieve right information at the right time at the right place for the right purpose. The time of researchers is very precious. Instead of spending it in monotonous and tedious tasks, it could be used more effectively for new findings. With the advent of computer and its softwares, this problem could be overcome to a considerable extent.

Software is a set of instructions given to the computer to perform certain tasks. In this era of information technology, its essential to apply different softwares to speed up the research activity. It is therefore, utmost importance to have information about the different software already developed in the area of fisheries/aquaculture worldwide. Almost all the routine tasks which the scientists or the farmers are doing, could be automated in the areas like financial & economic analysis, development planning and project appraisal, facility design, management planning and production forecasting, facility construction, management decision support and record keeping, disease diagnosis and treatment, environmental regulation and aquaculture databases. FAO, World Fish Centre and other International Research Organisations have contributed software and database development in the area of aquaculture (Anon, 1999; ICLARM, 1998; FAO, 1999; Erist, 1998). In India also initiative to develop software and database has been taken up. Preliminary report on the availability of fishery related software and databases are available (Roy, 2000). In this communication, an attempt has been made to list softwares and databases that may be used in fisheries and aquaculture research and development/activities.

8.1 Moisture extraction pattern

The moisture extraction pattern reveals about how the moisture is extracted and how much quantity is extracted at different depth level in the root zone. The moisture extraction patter shows the relative amount of moisture extracted from different depths within the crop root zone. The moisture extraction pattern of plant growing in a uniform soil without a restrictive layer and with adequate supply of available soil moisture throughout the zone is shown in Figure. 8.1.

Soil pH

Danish scientist Sorensen (1909) first used the term pH. The H+ concentration is usually small and is expressed in terms of pH, defined as the logarithm of the reciprocal of the H+ concentration, in moles per litre. The pH scale ranges from 0 to 14, with 7 being neutral. Soil acidity is the concentration of H+ in the soil solution. This is active acidity. Besides, there is a potential acidity, that includes the H+ adsorbed on the colloidal fraction of soil. The pH scale is derived from the dissociation constant of water, Kw:

The soil acidity and alkalinity are major driving forces in regard to the mobility of plant nutrients from soil to plants. The extreme acidity or alkalinity cause damage to the crops and thus yield is affected. Correction of soil acidity or alkalinity depend upon the pH of the soil and its previous management options. Application of fertilizer in soil may be one of the factors affecting soil conditions. Exchangeable and soluble iron and aluminium ions and their hydroxy ion species may contribute hydrolysis to release H+ ions to the soil solution. The soluble salts of carbonate and bicarbonates also develop salinity in soils.

7.0 Soil reactions

Soil reaction is an indication of the acidity or alkalinity of soil and is measured in pH . The pH scale ranges from 0 to 14 with pH 7 as the neutral point. When the amount of active hydrogen ions in the soil solution increases the soil pH decreases and thus becoming more acidic in reaction. One of the outstanding physiological characteristics of the soil solution is its reaction. Soil reaction can influence the physico-chemical properties of soil which can regulate the growth and activity of plant and soil organisms associated with it.

Soil acidity is most conveniently measured by pH of soil suspension with water. Pure water undergoes dissociation into hydrogen and hydroxyl ions and are in equilibrium with undissiociated water molecules Thus, H2 O ??? ??? H+ + OH- (1) and in presence of another H2 O molecule, H+ converts to H3 O+ H+ + H2 O ??? ??? H3 O+ (2) Since water is a weak electrolyte and dissociates as per Eqn. 1, the ionic product of water can be written as – KW = aH+ x aOH- = (CH+ x COH– ) x ( fH+ x fOH-) (3) where, a, C, and f represents the activities, concentrations and activity coefficients of respective ions. In pure water and in dilute solutions the activity coefficients are approximately unity thus the product of concentrations of H+ and OH-1 is the ionic product of water and at ordinary temperature (250 C) this has a constant value of 10-14 gm ions per litre so, Kw =(CH+ x COH–1) = 10-14 gm ion per litre (4) such that, CH+ = COH–1 = 107 gm ion per litre Therefore, if hydrogen ion concentration of an aqueous solution exceeds this value, (10-7gm ion per litre), the solution is said to be acidic then there will be a proportionate decrease of OH- concentration to maintain the constant value of ionic product.

Aggregation is a direct indicator of soil structure. Ahealthy soil is considered to have well aggregated structure. Though not routinely followed during soil testing and chemical analysis, aggregation is one of the major indicators of soil physical health. Wet sieve method (Yoder, 1936) is usually followed for soil aggregate analysis. This involves gently raising and lowering a nest of sieves in water to assess the stability of aggregates to rapid wetting. However, the Yoder’s wet sieving method has been modified to make it simpler and currently, the method of Kemper and Rosenau, 1986 is being commonly used in research laboratories. One of the pre-requisites in these methods is the availability of wet sieving apparatus and further, these methods are laborious and time consuming. On the other hand, the method described by Cambardella and Elliott (1993) is considered very ideal because of its simplicity and is being widely used for aggregate bound soil carbon fraction study. The soil sample is wet sieved with a series of three sieves (2000, 250 and 53 micron size).

Aggregation is one of the basic physical characteristics of soil. Under natural conditions, primary soil particles, particularly clays, tend to join together to form secondary units called aggregates. Size distribution of soil aggregates is important because the size of the aggregates determines their susceptibility to water and wind erosion. Also, their size is important in determining the pore size distribution and regulating pore space in cultivated soils.

There are a variety of procedures being in use to test the stability of aggregates and aggregate size distribution. However, choice of the method for analysis of aggregate size distribution is determined by the purpose of analysis. The developed measures are relative and purpose specific. This chapter discusses dry aggregate analysis.

In natural condition primary soil particles cohere to each other to form a cluster or an aggregate through the cementing action of various agents like organic matter, carbonates, oxides of iron and aluminium, etc. Aggregate analysis tells one about the structural status, pore geometry which in turn influences the movement of air and water in soil, amount of water stable secondary particles (aggregate) as well as the extent of finer particles aggregated to the coarser particles and the erodibility status of surface soil against wind and water.

In natural condition primary soil particles cohere to each other to form a cluster or an aggregate through the cementing action of various agents like organic matter, oxides of iron and aluminium, carbonates, etc. Aggregate analysis tells one about the structural status, pore geometry which in turn influences the movement of air and water in soil, amount of water stable secondary particles (aggregate) as well as the extent of finer particles aggregated to the coarser particles and the erodibility status of surface soil against wind and water.

Methods of Analysis

Among the several methods of aggregate analysis the commonly used methods practiced in agriculture and related fields are wet sieving and dry sieving method of aggregate analysis.

9.1 Determination of Oxygen Diffusion rate (ODR) of Soil

The rate of movement of oxygen from atmosphere to respiring plant root cells is important for root respiration and thereby the growth and development of plant. While diffusion through the air-filled pores maintains the exchange of gases between the atmosphere and soil, diffusion through water films maintain the supply of oxygen and disposal of carbon dioxide from active root tissues which are typically hydrated.

Principle

Lemon and Erickson (1952) introduced a method for measuring oxygen diffusion in soil with the help of platinum electrode. The process measures the extent of chemical reduction of oxygen by the platinum electrode maintaining a constant potential of 0.65V with a reference electrode.

Soil amendments and organic matter play critical roles in enhancing soil fertility, improving crop productivity, and promoting sustainable agriculture. This abstract provides an overview of the importance of soil amendments and organic matter in soil management practices, highlighting their impacts on soil structure, nutrient availability, and microbial activity. By incorporating organic amendments such as compost, manure, and green manures into soil, farmers can replenish essential nutrients, improve soil structure, and enhance water retention capacity. Additionally, soil amendments can mitigate soil degradation, erosion, and nutrient runoff, contributing to long term soil health and ecosystem resilience. Understanding the benefits of soil amendments and organic matter is essential for promoting sustainable soil management practices and ensuring food security in a changing climate.

A. Soil Sampling

Soil is a store house of several nutrients. These are present in available and reserve forms and a dynamic equilibrium always exists between these forms of nutrients in soil. If the available form of a given nutrient element is depleted by crop uptake or by any other means, there will be immediate replenishment from the reserve source. In this context, it is also appropriate to note that soil is not an eternal source of plant nutrients. In a bid to produce more, soils are exploited very badly and they are gradually becoming deficient in several nutrients. There are several soil related constraints coming in the way of achieving sustainability in crop production.

3.1 Concepts of Soil Sampling

Samplinginvolvesthe selection fromthe total populationof a subset ofindividuals upon which measurements will be made. The measurements made on this subset (or sample) will then be used to estimate the properties (or parameters) of the total population.Samplingisinherent toanyfield research programinsoilscience because the measurement of the total population is impossible for any realistic study.

Samplingdesign involves theselection of the mostefficient method forchoosing the samples thatwill be used to estimatethe properties of the population. The definition of the population to be sampled is central to the initial formulation of the research study. The sampling design defines how specificelementswill be selected from the population, and these sampled elements form the sample population.

Pedogenetic and soilgeomorphic studies focus on determining the processes thatformed the soilproperties or landscapes under study and the environments that controlled the rates of these processes. Pedonscale studies are closely associated with thedevelopmentof soil taxonomic systems andfocus onvertical, intrapedon processes. Soil geomorphic studies are the interface between quaternary geologyand soil science and soil geomorphologistsfocus on lateral transferprocesses and the historical landscape evolution. Hence sampling is difficult for a particular population and is differentfor differentstudy.

3.1 Important Soil Physical Properties

3.1.1 Analysis of Soil Texture

Soil texture refers to the relative proportions of sand, silt, and clay on weight basis. Soil texture was recognized from very early times by experienced farmers from the feel of moist soil placed between the thumb and forefinger. The size groups arbitrarily classified by the International Society of Soil Science (ISSS) into clay (< 0.002 mm), silt (0.002 0.02 mm), fine sand (0.02-0.2 mm), and coarse sand (0.2 2.0 mm). Each soil textural name specifies the weight percent of each fraction falls within certain defined limits. The determination of the percentage of the soil separate present in a sample is called particle-size analysis.

Each type of particle present makes its contribution to the nature of the soil as a whole. Sandy soils are usually quite permeable to air, water, and roots, but they have two important limitations. One is their relatively low water-holding capacity; the second is that they are poor storehouses for plant nutrients. These limitations of sandy soils can, of course, be overcome if both fertilizer and irrigation water are available, but the costs are large.

Clay not only have a large surface area per gram, it also has electrically charged particles. These charges give clay the capacity to attract plant nutrient ions to its surface in forms available to plants, but sand lacks this capacity. Clay holds much more water than sands because they have a large surface area to be coated with water. One important problem with clay soils is their stickiness. When wet, they stick to ploughs, boots, or whatever they contact. Loam and silt loam soils are highly desirable for most uses. They have enough clay to store adequate amount of water and plant nutrients for optimum plant growth but not so much clay as to cause poor aeration or to make working with them difficult.

Soil sampling is the first step of soil analysis. As very small fraction of the huge soil mass is used for analysis, it becomes extremely important to get a true representative soil sample of the field.

6.1 INTRODUCTION

The Climate and soil play important role in growth and development of the plant. Growers in general and fruit growers in particular should have adequate knowledge of the effect of various soil and climatic conditions on raising horticultural crops. Horticultural crops cannot be grown in all types of soil and climate. Hence zone- wise cultivation is made. Climate includes a number of parameters like temperature, rainfall, atmospheric humidity, wind, hail and light whereas soil covers factors like moisture content, texture, soil reaction, nutrient content, chemical composition and soil temperature.

6.2 SOIL

Soil is a thin outer covering of the earth surface. It is the natural resource directly developed by different natural forces acting on natural materials. Soil serves as a base and support for plant growth. It is a basic medium for plant growth and supplies nutrients for growing plants. Soil is the home of the plant root and the reservoir for essential nutrients and water for growth and development of crop plants.

Soil
Cashew is grown on a wide variety of soils in India. It comes up well in all types of soils at an altitude up to 700 m. It cannot stand in water logged or saline soils. It can come up in very sandy soils also. Adoption of cashew has been found in wide variety of soils from coastal sands to degraded laterites. The worst soils, not suited to other crops, are normally allotted for cashew. In Sri Lanka and Philippines, it is grown in alluvial soils. Cashew comes up well even in volcanic soils of Indonesia, Fiji and some part of Philippines. Cashew is not suitable in heavy clays, water logged conditions and ill drained soils. It is grown abundantly in loose sandy soils particularly in South India, East Africa and Brazil. In Karnataka and Kerala, it grows well in poor laterite soils. Cashew prefers well-drained aerated sandy loam soils with adequate moisture. Coastal plains and plateau are very good for cashew cultivation.

In India, cashew is mostly grown on laterite and red soils and coastal sands. The tree has an extensive root system, which helps it to tolerate a wide range of moisture levels and soil types, but commercial production is only advisable in well-drained, sandy loam or red soils with slight acidic pH (4.5-6). The cashew tree can flourish in the sand of open beaches, but it grows poorly in heavy clay or limestone.

Though cashew can be grown on a variety of soils, a well-drained 1-1.5 m deep soil having a water table between 2 and 10 m depth and pH of 5.6 to 7.0 is preferred. Laterites, red and coastal soils rich with organic matter are best for cashew growing. Even the marginal soils can be used for cashew cultivation but the waterlogged condition should be avoided as the cashew is very susceptible to it (Farooki and Sreeramu, 1999).

Soil: Soil is the upper most crust of earth surface which supports plant growth. It is defined as a three phase system in which plants grow. These phases are solid, liquid and gas and are essential. Solid part is frame which provides space for other two. This consists of minerals, clay minerals and organic matter. The soil is also a living system with millions of microbes that breakdown organic matter and builds it again.

Some points are following

•    Microbes are essential and survive only when soil is well aerated and rich in organic matter and avoid of waterlogged conditions.

•    Texture of soil depends on the size of solid particles and classified as gravel, coarse and fine sand, silt and clay.

•    Soils are classified according to relative distribution of these particles and there are 12 textural classes.

•    Likewise, arrangement of these particles is referred as structure, and both texture and structure land soil physical properties like water holding capacity, aeration and bulk density.

Soil

Soil has a pronounceed effect on the plant growth and productivity in kewda. Well drained sandy-loam soil with adequate supply of moisture is best suited for its vigorous growth and flower production. Thickly distributed profitableKewda plantations with normal flowering are found in the lateritic belts with deposits of silty loam soil and adequate moisture supply. In heavy clay soil with inadequate moisture supply, the plants grow vegetatively with poor flowering. At places close to the Bay of Bengal like Rangiagarh, Kujang, Paradeep of Jagatsinghpur district, where a silt-loam soil deposit is found over the clay zone, the dense plantations of kewda with free flowering ability are noticed. But surprisingly, the female plants are more at few places close to the Paradeep port, which may be due to seed propagation by drifting of ripe fruits from the uplands; while in Ganjam district, the farmers are used to plant the selected male plants in their field resulting in high flower production.

The tentative age of the natural plantations is estimated from the rates of leaf production, stem and branch growth (5-50 cm / year) and development of branching pattern (primary and secondary) in conjuction with the interactions made with the local farmers of kewda (Fig. 9). The plants of different age groups (1 to 5 years) are observed for growth characters and flower production at Tulu of Ganjam and Konark of Puri districts under farmers’ field condition and it is observed that the initiation of flowers started at 5 years of age and the rate of flower production was 1.7 to 2.2 per plant (Table 9).

Soil- Soil is the upper most crust of earth surface which supports plant growth. It is defined as a three phase system in which plants grow. These phases are solid, liquid and gas and are essential. Solid part is frame which provides space for other two. This consists of minerals, clay minerals and organic matter. The soil is also a living system with millions of microbes that breakdown organic matter and builds it again.

Some points are following

Microbes are essential and survive only when soil is well aerated and rich in organic matter and devoid of waterlogged conditions.

Texture of soil depends on the size of solid particles and classified as gravel, coarse and fine sand, silt and clay.

Soils are classified according to relative distribution of these particles and there are 12 textural classes.

Likewise, arrangement of these particles is referred as structure, and both texture and structure lend soil physical properties like water holding capacity, aeration and bulk density.

Generally loamy soils and crumb structure are most preferred for fruit crops.

According to level of organic matter, soils are classified as mineral soil or organic soil and soil having more than 20% organic matter is organic soil like peat and muck.

SOIL MANAGEMENT PRACTICES

Good soil management is the basic for deriving greater benefits from the fertilizers used in crop production. Some of the good soil management practices are

Good tilth is the first feature of good soil management. It means a suitable physical condition of the soil and implies in addition a satisfactory regulation of soil moisture and air.

The maintenance of soil organic matter which encourages granulation is an important consideration of good tilth.

Tillage operations and timings should be adjusted as to cause the minimum destruction of soil aggregates. Good tilth minimizes erosion hazards.

The choice and sequence of adaptable crops or crop rotation are other very important considerations. These are related to climate, particularly rainfall and its pattern of distribution and the characteristics of the soil profile, including drainage and extent and duration of available soil moisture. A proper sequence of crop varieties greatly influences soil conditions. It is more realistic to evolve cropping patterns and land management practices according to land capability. Cropping patterns chosen and management practices adopted should aim at soil and moisture conservation for efficient nutrient and moisture utilization.

As compared to total N soil total P is present in much smaller amounts in soil; it is roughly about 10% of total N. Further, while N in soil is in the largest amount in surface 0 to 15 cm layer, soil P may be the same or in larger amounts in the sub-soil. Again, organic P constitutes only a small portion of total P. Thus, the Chemistry of soil P is generally centered on inorganic P. Total and organic P in some Indian soils is given in Table 8.1; hill soils had the highest and the desert soils the least total as well as organic P.

FRACTIONS OF INORGANIC P

All P in soils has originated from apatites [3 (Ca₃ (PO₄)₂.Ca×₂, where ×₂ could be F, Cl, (OH) or CO₃). Large deposits of apatites form phosphate rocks, which are the major materials for making phosphate fertilizers. As the soil weathering proceeds, P in apatite reacts with Al, Fe and other cations and forms compounds of different solubility. A knowledge of these can help in understanding the P-supplying capacity of soils. A number of chemical extractants and resins are used for determining different fractions. In general, 7 fractions of inorganic soil P are mentioned. These are: saloid-P (soluble and loosely bound P extractable by NH₄Cl), labile P (determined by using anion-exchange resins), Al-P (NH₄F extractable), Fe-P (NaOH extractable), Ca-P (H₂SO₄ or HCl extractable), reductant-soluble- P (CDB or sodium citrate-sodium dithionite-sodium bicarbonate extractable) and occluded P (CTB followed by NaOH extractable)

Out of the three primary plant nutrients (NPK), potassium (K) is taken up by crop plants in the largest amount, yet as compared to N and P, only a tiny fraction of it goes in the grain or seed. For example, Shivay et al. (2015) reported from a study on rice that about 20 kg N, 6 kg P (13.7 kg P2O5) and 46 kg K (55.2 kg K2O) was taken up by the crop to produce each Mg or tonne (1,000 kg) of rice kernel; however, only 4.3% of K taken up by the crop was found in the rice kernel as compared to 44% of N and 66% of P taken up by the crop. Some information on N, P and K removed per tonne of grain/ seed for some crops is given in Table 9.1.