eChapters

Abstract

Gender equity is more pronounced in livestock sector where more than 70% participation is from women side as compared to 33% in agricultural farming. About 75 million women are engaged in livestock sector. In India, livestock production is largely in the hands of women. In fact animal husbandry is becoming feminized. At present about 22% of milk and 2% percent of meat is processed into value-added products for trade while in developed countries it is above 90% and 60%, respectively. Traditional dairy products not only have established market in India but also great export potential because of strong presence of Indian diaspora in many part of the world. Value addition to dairy foods would provide health benefits to the consumers and improve the scale of economy in the dairy industry. Nearly half of the milk produced in India (50-55%) is utilized for the manufacture of value-added milk products but only 22% of the total milk produced is processed by the organized dairy sector. Conversion of surplus milk into indigenous milk products in and around production areas is least expensive and more profitable. Most of the animal farming activities such as cleaning of barn, washing of animals and hygienic maintenance, fodder collection, feeding, watering, and health care, management, milking, collection of dung for fertilizer and fuel, care of sick, pregnant and lactating animals, milking, household-level processing and value addition (ghee, curd, khoa, lassi and desi butter-making) are undertaken by women. However adoption of value-added livestock products as an entrepreneurship is scarce activity because of lack of training and financial liberties.

Abstract

Participation of rural women and youth in beekeeping activities provides a unique opportunity to improve rural livelihood and poverty reduction. Women have explored their own niche in beekeeping industry by actively engaging in post harvesting of bee products. Income generation is one of the major reasons for participating in beekeeping activities and beekeeping was ranked number one at the same level as agriculture as major source of income. Post harvesting beekeeping, however, needs liquid capital investment which, limit women and youth to fully participate in the business. Cultural practices are also one of the main hindrances for adult women and youth to participate in beekeeping activities. Nonetheless, presence of beekeeping groups and associations, community banks, forest reserves and beekeeping awareness campaigns in the areas provided opportunities for women and youth to participate in beekeeping. Beekeeping represents one opportunity for income generation which need not be time consuming and can fit in well with women’s priority activities. women be given the opportunity to start beekeeping, it is important that all beekeeping development programs ensure from the outset that extension messages reach rural women, and that they are able to take full advantage of training and credit facilities.

Abstract

Women make up almost half of the agricultural labour force in developing countries (43 per cent according to UN Women data). Empowerment of women is central to achieving the objective of inclusive, equitable and sustainable development. Between the period 2007-08 and 2009-10, the share of person-days in casual employment in MANREGS to the total person-days in all economic activities has also increased. The increase was marginal for male workers but significant for female workers. This again confirms that female workers have been the largest beneficiaries of MANREGS projects. The share of female participation in these public works is more than the share of their male counterparts. The survey shows that women comprise only 13.76% of the total entrepreneurs, i.e., 8.05 million out of the 58.5 million entrepreneurs. Among the states, the largest share in number of establishments under women entrepreneurship is of Tamil Nadu (13.51%) followed by Kerala (11.35%), Andhra Pradesh (10.56%), West Bengal (10.33%) and Maharashtra (8.25%). Average employment per establishment for women owned establishments is 1.67. The main challenges that women face in business are educational and work background, balancing their time share between work and family, problems of raising start-up capital, difficulty in borrowing fund, thought-cut completions endangered existence of small companies, problems of availing raw- materials access to export market without intermediaries, as well as an overall psychological barrier on the part of banks, suppliers, and clients alike. Govt of India and different bodies such as NGOs, voluntary organizations, self-help groups, institutions and individual enterprises from rural and urban areas are active to help the women entrepreneurs in their ventures.

Abstract

Women in India constitute a larger proportion of total unemployed population and hence it is imperative to find out the entrepreneurial problems faced by them. A study was conducted with the objectives to ascertain the financial, marketing and production problems faced by women in their enterprises and assessment of their health status and work place facilities. Boutiques, beauty parlors, embroidery units, fruit and vegetable preservation units and artificial jewelry making were the enterprises selected for study. The results of the study revealed that women faced problems in areas like finance, marketing, health, work place and production. Some recommendations of the study are a) Women entrepreneurs should keep abreast of knowledge about new techniques, financial institutions, training institutions and marketing linkages. b) Information about site or location, physical facilities, transportation etc. must be collected prior to selection of area for development of an enterprise. c) Self help mutually aided groups must be formulated for overcoming common entrepreneurial problems. d) Women should shift to the non-traditional sectors of entrepreneurship in order to earn more.

Woman is an incarnation of ‘Shakti’the Goddess of Power. If she is bestowed with education, world’s strength will double. Let the campaign of ‘Kanya Kelavni’ be spread in every home; let the lamp of educating daughters be lit up in every heart across the regions and religions of the world.

Abstract

Globalization defines a new process of economic integration which is fuelled by neoliberal ideals claiming that an unregulated market economy maximizes economic efficiency and growth. Concept of equability and women empowerment provides durable strength and sustainable development to the programs aimed at promotion of commerce and trade through globalization. The post 2015 Development Agenda have not done much to address the large inequalities and discrimination against women. Global initiatives designed to benefit the daily lives of women and girls not being implemented effectively. This is especially for decision making and financial systems. The right to women needs to be ensured in order: to participate in the elaboration and implementation of development planning at all levels, to have access to adequate health care facilities, including information, counselling and services in family planning, to benefit directly from social security programmes, to obtain all types of training and education, formal and informal. All forms of discrimination against all women and girls everywhere must be ended. Out of the seventeen sustainable development goals (SDGs), not even the single one will be achieved without including women and girls as equal partners. All countries hold the same responsibility to ensure the full implementation of the 2030 Agenda for Sustainable Development within their own borders, and to support other countries in achieving the SDGs which includes reaffirming and contributing to the fulfilment of gender equality. Women and girls have to be equal partners in sustainable development.

Abstract

Gender Budgeting was first introduced in 1985 and is being implemented globally by more than 50 countries to ensure gender equality goals. India took initial steps towards analysing the gender gap through “Towards Equality” a Report of the Committee on the Status of Women by the Government of India in 1974. Gender based resource allocation in the country was seen from 1990s onwards in the Eighth Five Year Plan (1992-97) when for the first time gender perspective and the need to ensure definite flow of funds from general developmental sectors to women was emphasised upon. Women constitute 49% of human population in India so it is extremely important that the untapped gender potential is recognized, reorganised and utilized efficiently & effectively to attain a leading position in S&T sector. India has expanded her R&D base immensely since the turn of the 21^st century. Consequently there has been 10 times enhancement in enrolment of women in S&T disciplines in institutions of higher education since 1989-90. Department of Science and Technology has taken many steps in recent past to strengthen the ecosystem to empower women in S&T domain, particularly by enabling over 4000 of them who had a break in career, primarily due to familial responsibilities, to make a dignified comeback. Several Role Models, who have shown their mettle and made a mark in the chosen field, are emerging and engaging & encouraging the young, Gen Next girls.

Abstract

Beekeeping or modern apiculture is the art and science of rearing, breeding and managing honey bee colonies in artificial hives for economic benefits. Beekeeping has evolved into a farming enterprise that involves the use of sophisticated and artificial techniques to keep honey bees for bee products. It is estimated that beekeeping is practiced in about four lakh villages and provide employment to over 3.50 lakh persons. The existing vegetation wealth of India can sustain six million bee colonies which would produce six lakh metric tonnes of honey besides generating part time employment to more than 15 million rural and tribal households. Rural women have long working hours, spent on food production and processing and/or waged labour, in addition to family care and domestic duties. However, beekeeping represents one opportunity for income generation which need not be time consuming and can fit in well with women’s priority activities. Population, female (% of total) in India was reported at 48.18 % in 2017, according to the World Bank collection of development indicators. Rural population (% of total population) was reported at 66.46 % (83.3 crore) in 2017 as compared to urban population (37.7 crore). There are fewer women than men beekeepers, but women beekeepers are found throughout the developing countries of every continent. Participation of rural women and youth in beekeeping activities provides a unique opportunity to improve rural livelihood and hence poverty reduction. Beekeeping as an agro-industry presents tremendous potential and requires attention on part of planners, policy makers, development agencies and researchers on the one hand and wider publicity about the commercial and scientific uses of beekeeping products on the other. In order to increase income accrued from beekeeping activities, promoting and support of training on processing of secondary bee products to women and youth beekeepers are important. Stakeholder’s involvement in promoting and support beekeeping awareness campaigns is crucial to enhance the contribution of the sector for livelihood improvement and environmental conservation.

Abstract

Women empowerment means capacity of womenfolk to participate as equal partners in cultural, social, economic and political systems with much appreciated and gladly accepted by the society. Acceptance of unequal gender norms by women are still persisting in the society. Moreover, ignorance prevails in rural areas and subordination to men is considered as god-will by the womenfolk. Food, health and education are prioritized to boys and girls’ destiny is linked to surplus resource of the family if any, available. Gender inequality exists in every nation on the planet. Women’s disempowerment is all over the world, comprising countries of east and west so empowerment of women has become one of the most important concerns of 21st century’s world. More than one third of the world’s adults, most of them women, have no access to printed knowledge, to new skills or to technologies that would improve the quality of their lives and help them shape and adapt to social and economic change. There are 130 million children who are not enrolled in primary school and 70 per cent of them are girls. Women and girls around the world are more likely to live in poverty due to discriminatory and unjust economic policies, pervasive gender inequality, war and instability and climate change. Human society has to work for sexual and reproductive health and rights, freedom from violence, economic justice, and leadership as these are the critical building blocks for women’s rights. When a woman has these rights, she can be strong, safe, powerful, and heard. Cultural and religious factors are hurdles to women empowerment so the greatest need of the hour is to change the social attitude towards women. There is need to envision a world where all women, girls, and trans people have a voice and choice in the work they do. They are paid equal wages in safe and secure workplaces and they have access to justice and rights. Strengthening women’s leadership should be priority area because it is an integral part of social perception towards women status. The future of women’s human rights depends on a strong pipeline of diverse young women leaders, as well as on creating opportunities for leaders from different generations and movements to learn from each other. Long lists of international and national initiatives are available on the websites of various governments and United Nations but the tangible results are still awaited mainly because of poor/ half heartedly implementation.

Abstract

World Economic forum (WEF) which evaluated 149 countries on four parameters including economic participation and opportunity, educational attainment, health and survival, and political empowerment, said that it would take 108 years to close the overall gender gap. That means the economic opportunity gap-based on participation, pay and advancement in the workforce-remains the area that is going to take the longest time to close. Globally, women are paid less than men. Women in most countries earn on average only 60 to 75 per cent of men’s wages. Contributing factors include the fact that women are more likely to be wage workers and unpaid family workers; that women are more likely to engage in low-productivity activities and to work in the informal sector, with less mobility to the formal sector than men. India’s inequality crisis hurts girls and women the most. An Oxfam report on inequality published in January 2019 revealed that in the workplace, women still receive 34% less wages than their male counterparts for the same work. In J&K, incidences of domestic violence, dowry, etc are rampant. State Women Commission J&K receives 1600-1700 domestic violence cases every year, majority cases being from the Kashmir Valley. Men’s silence, insensitivity and indifferences with regards to gender equality practices need to be the focus theme of the time. The fight for gender equality cannot be fought by women alone. Men have a key role to play in demanding and supporting this societal shift by being a part of the movement.

Keywords: Women empowerment, global perspectives, Indian perspectives, way forward.

Abstract

Political participation of women, on equal terms with men, at all levels of decision-making is essential to achieve the principles of equality, sustainable development, peace and prosperity. Participation is a development approach, which comprises the involvement of disadvantage segments of population in the design and implementation of policies concerning their wellbeing. To achieve gender equality by 2030 requires urgent action to eliminate the many root causes of discrimination that still curtail women’s rights in private and public spheres. Discriminatory laws need to be changed and legislation adopted to proactively advance equality. 49 countries still lack laws protecting women from domestic violence, while 39 bar equal inheritance rights for daughters and sons. Based on data from 87 countries, 1 in 5 women and girls under the age of 50 will have experienced physical and/or sexual violence by an intimate partner within the last 12 months. International efforts through UN are being encouraged throughout the world but are constrained by lack of national policy, cultural factors, social factors, religious factors, economical factors and role of gender base patriarchy. Secular and sustainable democracy prevails only when women experience benefits equally with their male counterparts. Creating adequate space in politics for women participation is essential to sustain real democracy and oblige mothers, wives, daughters and sisters and Gender Responsive Governance is the best strategy for this which embodies measures, attitudes and practices of different stakeholders, both men and women, at different levels of governance with a clear purpose to impact issues that foster women’s empowerment and promote gender equity and social justice. It is a process that promotes and sustains the ability of women to fully participate in the governance and development process, enhances their ability to raise critical questions about inequality and violence against them without fear and pressure.

Mole

A mole is defined as the amount of chemical substance containing exactly 6.022 140 76 × 10₂₃ numbers of constitutive particles such as atoms, ions and molecules. This number is a fundamental constant named Avogadro’s number in honor of Italian scientist Amedeo Avogadro. This constant is properly reported with an explicit unit of “per mole,” and rounded version being 6.022 × 10₂₃/mol.

This definition has been adopted since November, 2018 revising the old definition based on the number of atoms in a sample of pure ₁₂C weighing exactly 12 g. Thus, as per the definition, 1 mole of any element contains the same number of atoms as 1 mole of any other element. However, the mass of 1 mole of a particular element is different from that of another element.

Molar mass

Molar mass of an element (or compound) is the mass in grams of 1 mole of that substance, a property expressed in units of grams per mole (g/mol).

Principle

Different ions migrate at different speed dictated by their size and by the amount of charges they carry. As a result, different ions can be separated from each other by electrophoresis. The magnitude of the electric force F exerted on the charged particle when subjected to electrophoresis is product of the charge q of the particle and the electric field E generated between the two electrodes.

Acid and alkaline phosphatase enzymes are among the extensively studied phosphatases and classified so because of their optimum activities in acid and alkaline pH ranges, respectively. Acid phosphatase is predominant in acid soil while alkaline phosphatase is dominant in alkaline soils. The colorimetric assay of phosphatase is based on release of p-nitrophenol from hydrolysis of p-nitrophenyl phosphate byaction of phosphatase enzyme in buffered soil solution (buffer pH 6.5 for acid and 11 for alkaline phosphatase assay).

Principle

β-Glucosidase (BG) plays a major role in the degradation of soil organic matter and plant residues. It catalyzes the hydrolysis of β-d-glucopyranosides, the final, rate-limiting step in the degradation of cellulose, the most abundant polysaccharide providing simple sugars for the soil microbial population. BG has been shown to be sensitive to changes in soil and residue management as well as an early indicator of changes in SOC before these changes are reflected in total or organic C analyses. The method is based on colorimetric determination of the p-nirtrophenol released by β-glucosidase when soil is incubated with buffered PNG solution and toluene.

Fluorescein diacetate (3’ 6’-diacetyl-fluorescein) is a fluorescein conjugated to two acetate radicals. This colourless compound is hydrolysed by both free (exoenzymes) and membrane bound enzymes, releasing a coloured end product, fluorescein. This end product absorbs strongly in the visible wavelength (490 nm) and can be measured by spectrophotometry. The enzymes responsible for FDA hydrolysis are plentiful in the soil environment. Non-specific esterases, proteases and lipases, have been shown to hydrolyse FDA. The hydrolysis of FDA by soil enzymes can be estimated by methods of Adam and Duncan (2001).

Biological activity or index of a soil is the function of number of organisms present in soil and their physiological efficiency. The rate of respiration can be used as an index of the biological activity of soil as it reflects the physiological efficiency of the organisms. Monitoring of dehydrogenase, which are respiratory enzymes and integral part of all soil organisms, will give a measure of biological activity of soil at a given time.

During respiration biological oxidation of reduced compounds occur which is catalyzed by dehydrogenase. In the process TTC gets reduced to a pink coloured compound Triphenyl formazan (TPF) which can be quantitatively extracted by methanol and measured colorimeterically. The soil dehydrogenase activity in the current experiment was measured as per the methods of Cassida, (1977).

Enumeration of microbial flora present in soil is done by dilution plating technique. The technique is based on the fact of diluting the source inoculums to the extent that after plating the known volume of inoculums on appropriate media, the colonies will appear in countable range and each colony will be assumed to have been derived from a single cell/colony forming unit. Three numerically dominant groups of soil microbes are bacteria, actinobacteria and fungi. The most commonly used culture media for their enumeration include

Nutrient Agar-for heterotrophic bacteria,

Actinomycetes isolation Agar or Kenknight and Munaier’s agar for actinobacteria

Martin’s Rose Bengal Agar for fungi.

Analytical methods for study of soil microbes

The analytical techniques for study of soil microbes are grouped under the following heads :

• Determination of form and arrangement of microorganisms in soil
• Isolation and characterization of soil microorganisms
• Detection of microbial activity in soil
• Determination of microbial biomass.

For the above, the different analytical methods used are described below.

This procedure uses Diethylene Tri-amine Penta Acetic acid (DTPA) as the chelating agent, which combines with free metal ions in soil solution and forms soluble complexes.

The hot water soluble method is the most common method to estimate available B content in soil

Reagents

1. Azomethine-H: Dissolve 0.45 g azomethine-H and 1.0 g L-ascorbic acid in about 100 ml de-ionized or redistilled water. If solution is not clear, it should be heated gently on water bath at about 30ºC till it dissolves. A fresh solution should be prepared every week and kept in a refrigerator.
2. Buffer solution: Dissolve 250 g ammonium acetate in 500 ml de-ionized or redistilled water. Adjust the pH to about 5.5 by slowly adding approximately 100 ml glacial acetic acid, with constant stirring.
3. EDTA reagent (0.025 M): Dissolve 9.3 g EDTA in de-ionized or redistilled water and makes the volume up to 1 litre.
4. Standard Boron solution: Dissolve 0.571 g boric acid (H₃BO₃) AR grade in a small volume of deionized water and make volume to 1000 ml to obtain a stock solution of 100 mg B/L.

In this method, plant available sulphur (S) is extracted with 0.15% CaCl₂ and the soluble sulphate is estimated on a colorimeter.

In soil system, potassium (K) exists as water soluble, exchangeable, non- exchangeable and lattice K. The plant available K refers to the sum of water soluble and exchangeable K. Estimation of available K is usually done using neutral normal ammonium acetate as the extractant.

Estimation of plant available phosphorus content in soil has been attempted using several extractants. However, Bray’s reagent and Olsen’s reagent are the two common extractants used in India. Bray’s reagent (0.03 N NH₄F and N HCl) is used for acid soils, where, the fluoride ion complexes with Fe and Al in soil and thus releases the bound P. The Olsen’s reagent (0.5 M NaHCO₃) is used for neutral-alkaline soils.

This is a distillation method proposed by Subbiah and Asija (1956), where the soil is distilled with alkaline KMnO solution. The ammonia liberated is trapped in boric acid and then determined by titration against a standard acid. This procedure estimates the easily mineralizable nitrogen in soil.

Soil respiration is a good estimator of overall biological activity and thus is often used for describing soil quality. Soil respiration is estimated as the flux of CO₂ emitted from the soil surface. It represents the sum of CO₂ produced by root respiration and by heterotrophic decomposition. This procedure is a laboratory method where soil is incubated for a given period of days and the released CO is trapped by sodiumhydroxide (NaoH). This is also known as alkali trap method.

Particulate soil organic matter (POM) is one of the important soil organic matter (SOM) pools and matches the characteristics of a slow, decomposable or stabilized SOM pool. The POM fraction is considered as one of the indicators to changes in management and thus has been used in soil quality assessment studies.

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.

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.

This is one of the commonly used method to estimate organic carbon content in soil. In this wet digestion method, soil organic matter is oxidised with a mixture of K₂Cr₂O₇ and concentrated H₂SO₄ utilizing the heat of dilution of H₂SO₄. The unused K₂Cr₂O₇ is back titrated with ferrous sulphate or ferrous ammonium sulphate.

In dry combustion technique, the combustion of soil sample (about 250 mg and mm sieved) is carried out at high temperature (about 1000 ºC) through feeding in an inert boat in the electric furnace. The CO₂ produced from the oxidation of carbon present in the soil sample at high temperature is carried towards non dispersive infrared detector (NDIR) by a carrier gas where it is quantified and total carbon content is determined.

Wet sieving procedure separates soil into different size aggregates. However, for comparing the aggregate size distribution among management treatments and soil types, it is convenient to use indices. Mean weight diameter (MWD) and water stable aggregate percentage are some of the common indices used in aggregate stability studies.

Mean Weight Diameter (MWD)

This index was proposed by Van Bavel (1949) and is being used widely. The entire soil sample is passed through an 8 mm sieve prior to analysis and is subjected to wet sieving procedure as described before. The parameter which Van Bavel (1949) called the MWD is equal to the sum of the product of (a) the mean diameter (d ) of each size fraction and (b) the proportion of the total sample weight (w ) occurring in the corresponding size fraction. The summation is carried out over all ‘n’ size fraction including the one that passes through the finest sieve.

Thisprocedure estimates aggregatestabilitytoimpact ofraindropsand water erosion. Wet sieving procedure was originally proposed by Yoder, 1936. Later, the procedure was modified byKemper and Rosenau, 1986.

Equipment

1. Yoder type sieve shaking electrically operated machine (3/4 inch stroke at 30 strokes per minute)
2. Concentric sieves of various sizes of pores to fit properly into the machine.
3. Weighing balance

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.

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).

Soil bulk density (BD) or apparent density is determined in -situ by core method. Stainless steel or metallic cores of cylindrical shape with known height and diameter are inserted into the soil till the rim of the core. The soil core is then excavated and the soil sample is oven dried to get the dry weight. The ratio of the oven dry weight to the total volume of the core gives the bulk density of the soil.

Soil texture refers to the relative distribution of sand, silt and clay on a sample of <2 mm size. It is an intrinsic soil property and basically refers to the particle size distribution in a soil. A number of physical characteristics and chemical properties of a soil are influenced by texture or particle size distribution. To estimate the content of sand, silt and clay particles, the soil samples are first brought into a dispersed state by mechanical and chemical treatments so that different binding agents are removed. In the dispersed soil samples, the soil particles settle down at a differential settling rate according to their size. In laboratory, the common methods for analysis for particle size distribution are : Buyoucos hydrometer method and International pipette method. In this chapter, the procedure of Buyoucos hydrometer method is described.

Principle

This method is based on the principle of variable rate of settling of particles as per their size and as described by Stokes’Law. Large particles shall settle fast. The measurement of density of the suspension is done at different times using a hydrometer (ASTM 152H-Type hydrometer is preferred). The measurement in this hydrometer is based on a standard temperature of 20 _oC and a particle density of 2.65 Mg m_-3 and the units are expressed in grams of soil per liter.The principal source of error in this procedure is the incomplete dispersion of soil clays as the clay particles are cemented by agents such as organic matter, CaCO and iron oxides. Incomplete dispersion results in low values for clay and high values for silt and sand. Thus, soils with higher organic matter (>1.0%) should be first treated with 6% hydrogen peroxide (H₂O₂) for removal of organic carbon. The rate of sedimentation is also affected by temperature and the density of the dispersing solution.

Exchanges sodium (Na+) is animportantparameter forsalt affected soils. This is estimated by extraction with ammonium acetate and then measuring the extract inflamephotometer.

Reagents

1. Neutral normal ammonium acetate solution (1 N CH₃COONH₄ of pH 7): Dissolve 77.09 g of ammonium acetate in distilled water and make up the volume to one litre. Adjust the pH of the solution to 7 with ammonia solution or acetic acid.
2. Standard solution of Na (500 mg/L Na): Dissolve 1.271 g of NaCl in distilled water and make up the volume to one litre.
3. Working standard solution of Na (100 mg/L): Dilute 200 ml of 500 mg/L stock solution to 1000 ml.

Ion exchange is a reversible process by which a cation or anion held on the solid phase is exchanged with another cation or anion in the liquid phase. Soil mineral and organic colloidal particles have negative valence charges that hold dissociable cations. The power to retain cations at the surface of soil colloids is referred to as the cation exchange capacity (CEC). Cation exchange is a reversible reaction in soil solution, dependent upon negative charges of soil components arising from permanently charged or pH-dependent sites on organic matter and mineral colloid surfaces. The CEC is the sum of cations held by a kilogram of soil and is expressed in Cmol (p₊)/kg soil. In most agricultural soils, the cation-exchange capacity (CEC) is generally higher than the anion exchange capacity (AEC).

Electrical conductivity (EC) is a useful indicator of soil salinity. Relationships have been developed between EC and salinity classes for a 1:1 soil: water suspension. With increase in salt content in a soil, the EC increases. Thus, for salt affected soils, measurement of EC is vital as accumulation of salts in the root zone is detrimental to plant growth. EC is a measure of the ability of a soil solution to conduct electrical current.

Equipment and Reagents

1. Digital Conductivity meter
2. 0.01 M potassium chloride (KCl) solution: Dissolve 0.7456 g dry KCl in distilled water and make up the volume to 1.0 litre. This solution has an electrical conductivity of 1.413 dS m_-1 at 25ºC.

Soil pH is the measure of hydronium ion (H₃O⁺) or more commonly hydrogen ion (H⁺) activity in the soil suspension. Soil pH can be measured in soil-water suspension, saturation extract or in 0.01 M CaCl₂ solution. Saturation extract is used to identify specific soil problems such as salinity or sodicity. Measurement of pH using 0.01 M CaCl₂ solution gives more reproducible results than measured through soil-water suspension. It also provides a good approximation of field conditions as the electrolytic composition of 0.01 M CaCl₂ is considered similar to that of soil solution. However, among the three methods, soil-water suspension is most commonly used in research laboratories as well as for fertilizer recommendation as it is simpler and more convenient.

Soil sample collection is the first and most important step for soil quality analysis. A soil sample collected with due care and proper procedure is essential for getting reliable result of the analysis. The sample should represent the field and for practical purposes, an area of about 0.5 hectare is considered as one sampling unit. In case of conspicuous variation observed in the field in terms of texture, colour, slope etc, separate samples should be collected from areas differing in these attributes. In other words, sample should be collected from an area in the field with similar characteristics as seen through normal visual observation. Sampling should thus be avoided from areas like near trees, permanent vegetations, manure pits, manure piles or recently fertilized fields.

Soil Sampling procedure

1. For a particular field unit, one composite soil sample is prepared out of the samples collected from 7-8 spots distributed across the field unit. The entire field is covered by moving in a zig-zag manner from each sampling spot.
2. For each sampling point or spot, scrapping off the surface litter such as grasses or crop residues is done. Then, a “V” shaped pit of 15-20 cm length and of equal width is made. Depth of sampling depends upon the requirement and on the type of crop. For field crops like paddy, wheat etc, samples are collected from 15 cm depth. From the “V” shaped pits, take outslice of ½ inch thickness from both sides of the exposed pit surfaces from top to bottom.
3. The soil samples so collected from the 7-8 points are mixed thoroughly by hand and then is reduced to about 500 g by quartering process. The quartering process consists of a procedure in which the entire soil mass is divided into four quarters; the two opposite ones are discarded and the remaining two are remixed. This process is repeated till about 500g soil is obtained.

Family : Rhamnaceae

Flowering: July-September

Fruiting: October-January

Botanical Description: Jackal Jujube is a very thorny straggling shrub with rusty-velvety young branches with paired thorns. Thorns are, one straight and the other recurved. Alternately arranged simple leaves are ovate to ovatelancelike, often oblique, with three prominent nerves and numerous transverse nervules. Tiny green flowers are borne in nearly stalkless velvety cymes in leaf axils. Fruits are spherical or obovoid drupes, black, shining, seeds woody.

Family : Lythraceae

Flowering: August-September

Fruiting: November-December

Botanical description: The water chestnut is an annual aquatic herb with a rosette of floating leaves and submerged, anchored into the mud by very fine roots. It has two types of leaves, finely divided, feather-like submerged leaves borne along the length of the stem, and undivided floating leaves borne in a rosette at the water’s surface. The floating leaves have saw-tooth edges and are ovoid or triangular in shape, 2-3 cm long, on inflated leaf-stalks 5-9 cm long, which provide added buoyancy for the leafy portion. Flowers are white in colour, with Four petals and are borne for a long period. The fruit is a nut with barbed spines. Seeds can remain viable up to 12 years, although most germinate within the first two years.

Family : Myrtaceae

Flowering: April-May

Fruiting: July-August

Botanical description: The plant is an evergreen tropical tree, 50 to 100 ft. tall, with oblong opposite leaves that are smooth, glossy and having a terpentine smell. It has fragrant white flowers in branched clusters at stem tips and purplish-black oval edible berries. The leaves are antibacterial, and are used for strengthning the teeth and gums. The fruit is ellipsoid or oblong, variable in size and shape, usually up to 2.5 cm long, black, shining and juicy when fully ripe. Seeds always one, with thick rounded fleshy cotyledons, closely appressed on their inner faces.

Family : Mimosaceae

Flowering: January-March

Fruiting: April-June

Botanical Description: The plant is a large, nearly evergreen perennial tree that grows up to 20 m or more in height. It has a broad crown, up to 30 m across, and a short trunk, up to 1 m thick. Leaves are deciduous but foliage is persistent, as the new leaves appear while the old ones are being shed, so that the tree looks like an evergreen. Flowers yellowish-white in colour and are borne in small spherical glomerules of about 1 cm in diameter, forming short axillary panicles of 5-30 cm in length. Pods are greenish-brown to red or pinkish, rather thin with 10-15 cm long with irregular shape and flattened. There are about 10 seeds per pod, shining black in a white pulpy aril.

Family : Phyllanthaceae

Flowering: March-May

Fruiting: November-February

Botanical Description: The plant is a small to medium sized deciduous tree, reaching 8 to 18 m in height. It is known for its edible fruits of the same name. The tree has crooked trunk and spreading branches. The leaves are simple, nearly stalkless and closely set along slender branchlets. The leaves are often mistaken for leaflets of pinnate leaves. The flowers are small, greenish-yellow or pinkish, having six segments, but no real petals. The fruit is nearly spherical, light greenish yellow, quite smooth and hard on appearance, with 6 vertical stripes or furrows.

Family : Phyllanthaceae

Flowering: May-June

Fruiting: June-September

Botanical Description: The plant is a small deciduous tree reaching about 25-30 ft in height. Leaves are compound, 14-25 inches long, crowded at the ends of the branches leaflets 2-3.5 inches long, alternately arranged along the rachis, ovate or obliquely ovate, acute with rounded or wedge-shaped base. Flowers are very minute, in short dense spike-like clusters arising from nodules along the branches. Fruit is pendulous, in small clusters from the branches, round or slightly flattened at the poles, with shallow or deep ribs (usually 5) 0.75 inch across.

Family : Arecaceae

Flowering: February-March

Fruiting: April-May

Botanical Description: The plant is a moderate sized dioecious tree which grows up to 4-10 m. in height and 30 cm diameter with a large crown and rough trunk covered with persistent leaf bases. The leaves are 3 m. long, gently recurved on 1 m petioles with spines near the base. The leaf crown grows to 5 m wide and 7-10 m tall containing up to 100 leaves. The inflorescence grows upto 1 m with white flowers. The single seeded fruit ripens to orange-yellow.

Family : Nymphaeaceae

Flowering: Throughout year

Fruiting: Throughout year

Botanical description: It is an aquatic perennial herb, having erect perennial root stocks that anchor it to the mud in the bottom of the water bodies. Leaves vary from being elliptic-oval to almost circular 15-26 cm across, fine hairs on upper side and always remain at floating stage. Flowers are mostly white, occasionally pink or red reaching up to 15 cm in diameter.

Family: Nelumbonaceae

Flowering & Fruiting: July-December

Botanical description: It is a perennial aquatic plant, growing from a tuberous rootstock lying in mud at the bottom of water bodies, lakes and ponds. The plant produces large leaves which float on the surface of the water. Leaves are large, simple, glabrous, solitary, beset with scattered hard minute papillae and rounded in shape and covered with a network of microscopic hairs. Flowers are large, pink or white in colour with expanding and emerging above water. Fruit is 1-2 cm across with flat-topped seed pod divided into compartments. Seeds globose, 1 mm across and brown in colour