eChapters

14.1. Determination of Total Nitrogen in Soil (Modified Kjeldahl Method)

Nitrogen mostly present in soil in organic form. Relatively small amount of nitrogen usually occur in ammonium and nitrate form, the available form. The Kjeldahl method of total N determination includes both organic and ammonium form and with modification nitrate form of N can also be included.

Potato (Solanum tuberosum L.)

Potato is the third most important food crop in the world after rice and wheat in terms of human consumption. Potatoes are an important staple food crop. Introduced into Europe in the 16th century by Spanish explorers, it is cultivated throughout the world including the Indo-Pakistan subcontinent.

Botanical Name : Solanum tuberosum L.

Family : Solanaceae

Importance

• Potato is an economical food, as it provides a source of low cost energy to human diet.
• For vegetable purposes, potato has now become one of the most popular crops in India and cultivated in almost all states and under very diverse agro climate conditions.
• Potatoes are a rich source of starch

11.1 Introduction

The kiwi fruit is native to China, also known as Chinese Gooseberry. It was brought to New Zealand from China by missionaries in the early 20th century with the first commercial planting occurring several decades later. In 1960, it was renamed Chinese Gooseberries. It is a new fruit crop in India which is cultivated on a small scale and people do not know much about its cultivation. In India, it was first planted at Bangalore and after that in Himanchal Pradesh in 1963. In India, Kiwi is mostly grown in Jammu & Kashmir, Himachal Pradesh, Sikkim, Meghalaya, Arunachal Pradesh, Uttar Pradesh and Kerala.

Livestock production plays a critical role in global food security and economic sustainability. However, various stressors can significantly impact the well-being and productivity of livestock animals. Stress in livestock can arise from various sources such as environmental conditions, management practices, transportation, social interactions, and disease. Understanding the impact of stress on livestock production is essential for ensuring animal welfare and optimizing productivity. Although many factors can be involved, climatic factors are among the first and crucial limiting factors of the development of animal production in warm regions. In addition, global warming will further accentuate heat stress related problems in livestock. The first and foremost stress the livestock are exposed as a result of climate change is the heat stress. Among the environmental variables affecting animals, heat stress seems to be one of the intriguing factors making animal production challenging in many geographical locations in the world. Although animals can adapt to the hot climate, nevertheless the response mechanisms that ensures survival are also detrimental to performance. The vulnerability

Onion production is constrained by insect pests and diseases that damage seedlings, foliage, roots and bulbs and reduce both yield and market quality. Important pests include onion thrips, leaf miners, cutworms, armyworms and onion maggots. Major diseases include damping-off, basal rot, downy mildew, purple blotch, white rot and pink-root rot. Some insects also transmit damaging viral diseases. This chapter presents integrated cultural, biological, botanical, behavioural and chemical strategies for managing these threats. Crop rotation, sanitation, healthy planting material, proper spacing, resistant varieties, traps, barrier crops, beneficial microorganisms, natural enemies and need-based pesticides are discussed as components of sustainable crop protection and resistance management.

Seed spices, an important group of horticultural crops, are defined as vegetable products or mixture thereof, free from extraneous matter, primarily used for flavouring, seasoning and imparting aroma of foods item and beverages. Besides food industry, the seed spices have medicinal properties and thus are used in various pharmaceutical preparations and cosmetics (Malhotra and Vashishtha, 2008).  India is known as the home of spices and produces a wide variety of seed spices- coriander, cumin, fennel, fenugreek, ajowan, dill, nigella, celery, anise and caraway. Over the years a good number of high yielding varieties have been developed under AICRP on Spices of ICAR by SAU’s and National Research Centre on Seed Spices. India enjoys the status of largest producer of seed spices in the world but the productivity in the country is very low and is 25-30 % of the total potential of the crop varieties.

Abstract

Water scarce state Rajasthan is without efficient and effective management. Water, when at surface is cheaper and like free commodity to use. Most of it gets evaporated rapidly due to aridity. There is no water during summers and drought years. This is now critical time to rethink and review our planning and policies and make it ground water oriented instead of completely surface water based. Ground water management should be the thrust area and key issue. There is need to conserve andharvest each drop ofwater especially for recharge to ground water. Utilize the augmented ground water resources as crisis management during long dry spells. Also, enforcement of regulatory measures, creating awareness among masses and participatory approach ofmanagement are the key factors for ensuring sustainable availability of water resources.

Precipitation is water in liquid or solid forms, falling on to the earth. In other words, precipitation is the deposition of atmospheric moisture on earth. Formation of clouds does not mean precipitation. Precipitation involves condensation, growth of hygroscopic nuclei, cooling of nuclei at different stages and their fall on to the earth’s surface. There may be several clouds but no precipitation. If the cloud particles are too small and remain suspended in the sky, they may not fall on the earth. Under certain conditions, water particles formed tend to fall but do not reach the surface since they get evaporated on the way. Only when the cloud droplets or ice crystals grow to certain size and can no more remain floating due to buoyancy of air, do they fall as precipitation.

Precipitation is the major source of water to all the living organisms on the earth. All the water sources on the earth depend on precipitation only.

Forms of precipitation

Precipitation form is the state that the moisture is in, i.e., liquid, freezing, or frozen (solid). Different forms of precipitation may occur together, such as mixed rain and snow; but such an occurrence is simply a mixture of forms, not a separate form of precipitation. Because atmospheric conditions vary greatly both geographically and seasonally, several different forms of precipitation are possible. All forms of precipitation are collectively termed hydrometeors. Hydrometeors have been classified into 50 specific types. Out of these precipitation forms, only rain (liquid form) and snow (solid form) make significant contribution to total precipitation. In many parts of the world, the term rainfall is used interchangeably with precipitation.

This alternative pathway for glucose oxidation has enzymes in the cytosol through which glucose is degraded to carbon dioxide. It is also called a shunt because carbon atoms from glucose 6-phosphate take a long route before they proceed down the EMP or glycolytic pathway. This pathway is anabolic in nature as it produces many intermediates. In this pathway, two NADPH are generated from one glucose 6-phosphate molecule. No ATP is generated or consumed.
Overall, this pathway needs three glucose-6-phosphate molecules to complete all the reactions. Therefore, one cycle run produces 2 mol of fructose-6- phosphate, 1 mol of glyceraldehyde-3-phosphate, and 3 mol of carbon dioxide from 3 mol of glucose-6-phosphate with the reduction of 6 mol of NADP+ to NADPH.
Overall reactions of the HMP pathway are as follows:
3 Glucose-6-P + 6 NADP+→ 3 ribulose-5-P + 3 CO2 + 6 NADPH
3 Ribulose-5-P → 2 xylulose-5-P + Ribose-5-P
2 Xylulose-5-P + Ribose-5-P → 2 fructose-6-P + Glyceraldehyde-3-P

Cost is the value of the factors of production used in producing and distributing goods and services. The cost of a factor unit equals the maximum amount which the factor could earn in alternative employment. Broadly speaking, cost is the measure of what has to be given up in order to achieve something. Production costs play an important role in the decision of the farmers. Cost of production here means the exogenesis incurred per unit of output. In general, at given level of prices, a farmer can increase his farm income in two ways i.e. (i) by increasing production or (ii) by reducing the cost of production. The cost of production involves both cash cost and non cash cost items. Cash costs are incurred when resources are purchased and used immediately in the production process such as casual labour, fertilizer fuel etc. And non cash cost like depreciation on farm building and equipment and payment made to farmer himself or family labour, management and owned capital. Before estimating the cost of cultivation/production, we should know the concepts/terms are used in estimating the cost. Concept means idea underlying or general notion.

Cost concepts and items of cost

The cost of production of a crop is considered at three different levels viz., cost A, cost B and cost C. The concept of nine costs such as is followed by the Directorate of Economics and Statistics, Ministry of Agricultures Government of india in their cost studies are given below.

11.1 Planning

• Upon receipt of production program verify that crop sowing dates fall into crop windows identified for the particular area and allot accordingly. Check the quality of lots produced in previous season, if available.
• Assign crop location (Open field, Green house, Insect Proof Net / Cage etc) according to crop needs, site conditions and degree to which these conditions can be manipulated efficiently to meet the crop needs. Always adhere to optimum crop conditions.
• Identify material and personnel needs based on the production program and coordinate timely arrival of both. Material and personnel must meet standards established by the production site.
• Identify material quality like A, B, D (First, Second and Dirty) based on the specs.
• Refer standard procedures or formulate some of them. Do not proceed if proper documentation does not exist.
• Plan training for laborers regarding crossing, flower morphology, anthesis, time of stigma receptivity etc.

Much of the success on modern agriculture dependson the availability of high quality seeds with good genetic potential and proven performance in germination, emergence, and vigorous Vegetative growth.

Seed: Seed is a fertilized mature ovule containing an embryonic axis (embryo), stored food material (endosperm) and a protective covering (seed coat or testa).

Seed structures: Living embryo, the most important part of seed, consists of two structures (i) embryonic axis and ( ii ) cotyledon(s). Theembryonic axis is composed of three parts namely

(i)radical (embryonic root), the hypocotyls (point of attachment of cotyledons) and (iii) plumule (theshootapex with the first true leaves). Thethree parts of embryonic axis are easy to identify in dicots, but in monocots (especially in the family Gramineae) their identification is difficult. In monocots, there is only one cotyledon, which is reduced and modifiedto form the scutellum. The basalsheath of cotyledon is elongated to take the shape of coleoptile,while in somecases (e.g., maize), the hypocotyls is modified to form mesocotyl. The base of hypocotyls sheathing the radical is termed as coleorhiza.

Seed development: Thereare manyvariations in the pattern of seeddevelopment when the entire plant kingdom is considered. However, the general processof This includes seed development is almost similar.

The word ‘monsoon’ is derived from the Arabic word mawsim meaning season. The Arabs during their travel towards India recognised that by June strong southwesterly winds commence over the Arabian Sea and bring a lot of rains to the subcontinent. The term was first used in English in British India and neighbouring countries to refer to the big seasonal winds blowing from the Bay of Bengal and Arabian Sea in the southwest bringing heavy rainfall to the area. In the Indian subcontinent, monsoon is one of the oldest weather observations, an economically important weather pattern over June through September every year, and the most anticipated weather event and unique weather phenomenon. Due to its effects on agriculture, flora and fauna, and other economic, social, and environmental effects, a monsoon is one of the most anticipated, followed and studied weather phenomena of the Indian subcontinent. It has significant impact on the overall well-being of subcontinent residents.

The term ‘monsoon’ is customarily used in India to refer to the rainy season during the northern hemisphere summer from June to September and is traditionally defined as a seasonal reversing wind accompanied by corresponding changes in precipitation, but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with the asymmetric heating of land and sea. Now the term monsoon has been broadened to include almost all of the phenomena associated with the annual weather cycle within the tropical and subtropical land regions of the earth.

16.1. Forms of Soil K

Ignoring potassium (K) in soil organism, total K in soil may be classified as (i) water soluble K, (ii) readily exchangeable K (exchangeable K), (iii) slowly exchangeable K (non- exchangeable or fixed K) and (iv) mineral or lattice K. The different forms are in dynamic equilibrium with one another.

The coastal salt affected soils are low in productivity due to various soil fertility constraints that affect the crop growth and yield. The high salt content &/or high pH cause changes in solubility, availability and efficiency of plant nutrients, besides deteriorating the physical condition of soil. The soil biology (microbial population and enzymatic activities) also severely affected in these salt affected soils. The bio-resources are known to improve soil physical, chemical & biological properties of the soil. The maximization of rice production and considerable improvement in quality and composition of rice in coastal salt affected soil with the use of bio-resources have been reported by several research workers.

13.1 Introduction

Pecan nut is cultivated for edible fruits (drupaceous nuts) consumed as dried fruit or as processed food, as an ornamental plant, and to promote timber wood production (Wakeling et al., 2001 and Marozzi et al, 2017). In recent years, demand for pecan kernels has increased worldwide, partly because of the good flavour of the kernel, their high nutritional value or as an alternative crop to traditional and widely known nuts (pistachios, almonds, walnuts, etc.). In USA, it is considered as “Queen of nuts” because of its value both as a wild and as a cultivated nut. Poonch district in Jammu & Kashmir holds the reputation of “Pecans Capital of India.” Pecans can be available in the market year around in this region.

Introduction

The Indian dairy industry plays a vital role in the nation’s economic and social fabric, deeply connected to the livelihoods of millions of rural families. It is more than just a source of income; for many small-scale and marginalized farmers, it provides a lifeline, ensuring stability and sustenance in areas where opportunities are often scarce. At the same time, the industry faces the immense responsibility of balancing economic growth with ethical practices, environmental conservation, and the welfare of the communities it serves. In this complex environment, businesses operating within the dairy sector have the potential to make a meaningful difference, but only if they prioritize social responsibility alongside profitability. By embracing sustainable practices and fostering inclusivity, these enterprises can address critical challenges while contributing to a more equitable and resilient industry (Christie, 2020; Rotz et al., 2020; Clay et al., 2019).

For the dairy industry, social responsibility is not an abstract concept; it is a pressing need. Across India, small-scale farmers form the backbone of this sector, especially in rural regions where economic vulnerability is widespread. These farmers often face numerous challenges, including fluctuating milk prices, limited market access, and a lack of resources to improve productivity (Kamath et al., 2019; Sadashive et al., 2017). Businesses in the dairy sector can act as catalysts for change by creating fairer systems, empowering marginalized groups, and ensuring that ethical treatment of livestock becomes standard practice. Beyond its immediate economic impact, the industry has a profound role to play in addressing broader social issues, such as gender inequality and food security, while promoting sustainable development that benefits everyone involved (Jaiswal, 2018; Garai et al., 2019).

Fruits and vegetables are very important food commodities. India has become the largest producer of fruits and the second largest producer of vegetables. Though the production of fruits and vegetables make us believe in our strength for self-sufficiency, a significant qualitative and quantitative loss occur in the produce from harvest till consumption.  For self sufficiency and also for processing, export and to meet additional requirements, a lot of emphasis need to be given to reduce post harvest losses, besides increasing  production and productivity of horticultural produces. Processing plays an important role in  conservation and effective utilisation of these perishable commodities. However, only less than 2% of total production of fruits and vegetables are processed.  The new industrial policy has placed this sector in the list of high priority areas.

Phospholipids are the most abundant lipids of biological membranes. They serve primarily as structural components of membranes and are never stored in large amounts. As the name of phospholipid implies, this group of lipids contains phosphorus in the form of phosphoric acid groups. The major phospholipids found in membranes are the phosphoglycerides (phosphatides) (Fig.1). Which have two fatty acid molecules esterified

Power transmission through belts, pullies, gears, speed and size

Both stationary and portable types of agricultural machines make use of various types of power transmitting devices for doing useful work.

Some of these power transmitting devices are meant to convert rotary motion into linear motion or oscillating motion.

This transmission of power from generating unit to useful unit is possible through belts, pullies, gears, cams and couplings are also employed to transmit power. eg. The self propelled combine is a machine which employs most of the above power transmitting devices.

In some machines the belt drive is used to transmit power between two parallel shafts placed a short distance apart. In others a sprocket and chain drive is preferred, when the two parallel shafts to be operated