eChapters

8.1 Introduction

After isolation and purification of the compound, it has to be identified. It is necessary to find out the class of the compound first and then to find out the specific compound within the class. The class of compound is usually determined from the colour tests, solubility, Rf properties and UV spectral characteristics of the compound. Further identification within the class depends on measuring physical properties and spectral measurements and then comparing these data with those in the literature. The physical properties include melting point (for solids), boiling point (for liquids), optical rotation (for optically active compounds) and Rf. The spectral measurements include Ultra Violet (UV) , Infra Red (IR) , Mass Spectrum (MS) and Nuclear Magnetic Resonance (NMR). Data on X – ray crystallography of the compound are also useful for identification of the compound.

On completion of the analysis of the spectra obtained, the pieces that have been identified are listed. Then the pieces, the MW and / or molecular formula are checked and the pieces are refined to fit. Finally, the pieces are assembled paying particular attention to ¹H-NMR chemical shifts and coupling patterns. The answer should be checked with the ¹H-NMR data very carefully and it is probably the most critical test to pass. The ¹H-NMR spectrum is potentially the most useful for assembling the structure of the compound.

A known compound can usually be identified on the basis of the above mentioned physical and spectral characteristics. For final confirmation, direct comparison with authentic compound (if available) should be carried out Authentic compounds can be obtained from commercial companies. In the absence of authentic compound, the data from literature can be carefully compared for the identification of the isolated compound. If a new compound is present, all the above data are sufficient enough to identify it. However, data on chemical degradation or laboratory synthesis of the compound are necessary to confirm the identification of the new compound.

After isolation and purification of the compound, it has to be identified. It is necessary to find out the class of the compound first and then to find out the specific compound within the class. The class of compound is usually determined from the colour tests, solubility, Rf properties and UV spectral characteristics of the compound. Further identification within the class depends on measuring physical properties and spectral measurements and then comparing these data with those in the literature.

34. GEOPHYSICAL METHODS

This chapter gives important and useful methods for measurement of seismic signals.

Firstly a brief introduction of seismic signals is given. The P waves, S waves and L-waves are discussed in short.

The old methods of measuring seismic signals like mechanical geophones are replaced by electronic geophones. The discussion includes Electromagnetic type, Reluctance type, Capacitive type and pressure type of basic geophones. New methods of damping are included. New Recently developed amplifiers and filters are also included. Development in oscillographic elements and cameras are discussed. Other information includes, the recently reported Array Technology and Space Technology for measurement of seismic signals.

The practice of official release of cultivars in India started in October, 1964 with the formation of the Central Variety Release Committee (CVRC) at the Central government level and State Variety Release Committee at State Government level. The Central Variety Release Committee functioned up to 1969 when its functions were taken over by the Central Seed Committee (CSC) established under the Seeds Act, 1966. The Central Seed Committee later on bifurcated CVRC and constituted (i) a Central Sub-Committee on Crop Standards Notification and Release of Varieties for Agricultural Crops and (ii) a Central Sub-Committee on Crop Standards Notification and Release of Varieties for Horticultural Crops to discharge the functions of release/notification, provisional notification and de-notification of cultivars at Central level for field and horticultural crops respectively. State Seed Sub-Committees (SSSC) were asked to discharge similar functions for release at State level. Central Sub-Committee on Crop Standards, Notification and Release of Varieties for Agricultural Crops is responsible for release and notification of field crops. This committee is chaired by ICAR-Deputy Director General (Crop Science). The members are drawn from Directors/Crop Coordinators of ICAR, Directors Agriculture from States, Directors Seed Certification Agencies, Managing Directors of State Seed Corporations, Representatives from Private Seed Companies, etc. 

Insecticide classification majorly divided into three categories. A. based on chemical group, B. mode of entry in the insect, C. based on toxicity.

A. Classification of Insecticides based on chemical group

Historians have traced the use of pesticides to the time of Homer around 1000 B.C. earliest records of insecticide use pertain to the burning of “brimstone” (Sulfur) as a fumigant. Pliny the Elder (A.D. 23-79) recorded most of the earlier insecticide uses in his Natural History and included among these was the use of gall from a green lizard to protect apples from worms and rot. Later, a variety of materials used viz., extracts of pepper and tobacco, soapy water, whitewash, vinegar, turpentine, fish oil, brine, lye and many others. At the beginning of World War II (1940), insecticide selection was limited to several inorganic compounds, arsenicals, petroleum oils, nicotine, pyrethrum, rotenone, sulfur, hydrogen cyanide gas, and cryolite. It was during World War II that opened the Chemical Era with the introduction of a totally new concept of insect control.

4.1 Introduction

Issues of productivity growth and patterns of substitution in the fertilizer sector as well as in other energy intensive industries in India have been discussed from various perspectives. Historical estimates vary from indicating an improvement to a decline in the sector's productivity. The variation depends mainly on the time period considered, the source of data, the type of indices and econometric specifications used for reporting productivity growth. Regarding patterns of substitution most analyses focus on inter fuel substitution possibilities in the context of rising energy demand. Not much research has been conducted on patterns of substitution among the primary and secondary input factors: Capital, labour, energy and materials. However, analyzing the use and substitution possibilities of these factors as well as identifying the main drivers of productivity growth among these and other factors is of special importance for understanding technological and overall development of an industry.In this paper we contribute to the discussion on productivity growth and the role of technological change. We introduce the fertilizer industry in more detail taking into account industry specific aspects such as structural composition, production, technologies, energy consumption within processes, sector specific policies etc. This following we derive both statistical and econometric estimates of productivity growth for the fertilizer sector over time. For the statistical analysis we develop the Kendrick and Solow indices while for the econometric analysis a translog cost function approach using both cross-state and national thime series data is employed. The results are then interpreted within a broader context of structural and policy changes in the sector as well as other sector specific aspects.

4.1. Multiple Choice Questions

1. GoI has indicated ??? crop will be introduced without evaluating biosafety and socioeconomic desirability.
   1. GM
   2. Organic
   3. Rabi
   4. Kharif
2. ??? is AGRI UDAAN.
   1. Food and agribusiness initiative
   2. Food and agribusiness accelerator
   3. Food and agribusiness incubator
   4. Both b and c
   5. All the above
3. Union Minister for Agriculture and Farmer’s Welfare launched --------------------------------------?? quality mark logo at New Delhi.
   1. National Dairy Development Board
   2. National Dairy Development Authority
   3. National Dairy Development Authority
   4. National Dairy Development Programme
4. --------------------------------------?? state is leading in the production of litchi.
   1. Bihar

Fat-rich dairy products such as cream, makhan, butter, butter oil and ghee have played a pivotal role in growth and development of dairy industry in India as well as abroad from the time immemorial. The reference of makhan and ghee has been found in old Indian scriptures. Makhan was popularized by Lord Krishna about 5000 years before. In the traditional Indian dietary regimen, milk fat in the form of malai (cream), makhan (freshly churned butter) contributes significantly towards nourishment of people of almost all ages.

Indian dairy industry, over the years, has been converting surplus milk for the manufacture of fat-rich dairy products, especially ghee and butter with skimmilk as a byproduct because of technological and economic reasons. More than one-third of the total milk production is being utilized for the production of ghee and butter wherein milk lipids, the most expensive constituents of milk are conserved and preserved. Milk lipids play many diverse roles, some of which are essential for human health. Many of the desirable flavour and textural attributes of dairy products are due to their lipid components, consequently, butterfat has, traditionally, been highly valued. Significance of fat can also be realized from the fact that the consumer’s perception of food quality is largely based on the perceivable rich taste. Unfortunately, milk lipids are subject to chemical and enzymatic alterations which can cause flavour defects referred to as oxidative and hydrolytic rancidity, respectively. The storage stability of high-fat products is strongly influenced by these changes.

Lifespan development examines the physical, cognitive, linguistic, emotional, social, moral and personality changes that occur from conception through old age. This chapter evaluates essential concepts related to prenatal development, infancy, childhood, adolescence and adulthood. It includes developmental stages and tasks, heredity and environment, motor and language development, emotions, play, learning, perception, personality and major psychological theories. Questions address the contributions of Freud, Erikson, Piaget, Pavlov, Skinner, Havighurst and other influential thinkers. The chapter also covers childcare, discipline, parenting, developmental assessment and legal safeguards, enabling learners to revise the fundamental principles governing human growth and behaviour across the lifespan.

Fruits, nuts and vegetables play a significant role in human nutrition, especially as sources of vitamins, minerals, dietary fibre, and antioxidants. Increased consumption of a variety of fruits and vegetables on a daily basis is highly recommended because of associated health benefits, which include reduced risk of some forms of cancer, heart disease, stroke, and other chronic diseases. Both quantitative and qualitative losses occur in horticultural commodities between harvest and consumption. Qualitative losses, such as loss in edibility, nutritional quality, caloric value, and consumer acceptability of fresh produce, are much more difficult to assess than are quantitative losses. Quality standards, consumer preferences and purchasing power vary greatly across countries and cultures and these differences influence marketability and the magnitude of postharvest losses. Postharvest losses vary greatly across commodity types, with production areas and the season of production. Losses of fresh fruits and vegetables in developed countries are estimated to range from 2 percent for potatoes to 23 percent for strawberries, with an overall average of 12 percent losses between production and consumption sites. In contrast, the range of produce losses in developing countries varies widely. Losses at the retail, food-service, and consumer levels are estimated at approximately 20 percent in developed countries and about 10 percent in developing countries (Adel A. Kader and Rosa S. Rolle, 2004 ). Overall, about one third of horticultural crops produced are never consumed by humans. Reduction of postharvest losses can increase food availability to the growing world population, decrease the area needed for production, and conserve natural resources. Strategies for loss prevention include use of genotypes that have longer postharvest-life, use of integrated crop management systems and good agricultural practices that result in good keeping quality of the commodity and use of proper postharvest handling practices in order to maintain the quality and safety of fresh produce.

A. General
        
B. Bulbous Plants
        
C. Greenhouse Technology
        
D. Plant Breeding
        
E. Plant Physiology
        
F. Plant Tissue Culture and Biotechnology
        
G. Post Harvest Technology

4.1. Deficiency symptoms in different plant parts

Nutrients are important for growth and productivity of crops. Apart from the N, P, K, Ca, Mg and S, micronutrients such as Zn, Fe, Cu, B, Mo, Mn, Cl, etc. are also necessary for maintaining normal health and metabolism of plants. However, nutrient deficiency can lead to poor and stunted growth of plants resulting in poor yield performances. The depletion of nutrients from the soil is increasing due to adoption of modern agricultural technology through intensive and extensive cultivation of high yielding varieties. Nutrient deficiencies are very common in horticultural crops rather than in field crops.

Identification of nutrient deficiencies in crop plants through visual symptom is the cheapest diagnostic technique. When a nutrient element insufficiency occurs, below the critical level, visual symptoms may or may not appear, although normal plant development will be slowed. When visual symptoms occur, such symptoms can frequently be used to identify the source of the insufficiency.

A. Biotic and abiotic stresses in spices
1. Black pepper
1a. Challenges of biotic stress in Black pepper breeding
The status and future prospects of breeding for biotic stress resistance in black pepper are essential areas of research due to the significant impact of pests and diseases on black pepper crops. Biotic stress, caused by pathogens, pests, and weeds, can severely affect the yield and quality of black pepper, making the development of resistant varieties a critical objective for breeders.
Current status
1. Research efforts: There have been considerable efforts to identify and develop black pepper varieties that are resistant to various biotic stresses. These include resistance to diseases like Phytophthora foot rot (caused by
Phytophthora capsici), quick wilt, nematode infections, and pest attacks like the pollu beetle.
2. Breeding techniques: Traditional breeding methods have been complemented by molecular breeding techniques. Marker-assisted selection (MAS) is increasingly used to accelerate the development of resistant varieties. The integration of genomic tools has also enhanced the efficiency of identifying resistance genes and their incorporation into high-yielding varieties.
3. Resistance sources: Several resistant genotypes have been identified, but their commercial success is still limited. The genetic diversity within black pepper and related species is explored to find novel resistance genes that can be introduced into cultivated varieties.

During the last 50 years or so, the world has witnessed tremendous changes in terms of population exodus, accessibility to food, advancement in agricultural science and technology, increased food production, efforts in mitigating food and nutrition security, natural and human made disasters and developmental efforts in handling and containing national and global issues. Inspite of these efforts, the challenges which have cropped up are plenty and at the same time creating avenues of opportunities to address those challenges in the interest of humanity. The world is large, countries are many, agro- climatic regions vary significantly, socio-economic conditions are distinct and the national, regional and global issues vary greatly. For ease of presentation and convenience of illustration, common issues only will be dealt in this chapter. Keeping in view the theme of this book, the following topics/issues will be discussed which pose challenges for the living humanity and for future generation within next 50 years. The views are limited to developmental, planning and implementation processes only in order for governments and others to consider overcoming these challenges.

1. Introduction

The cultivated apple (Malus × domestica Borkh.), is the most important fruit in temperate regions of the world. Apples were frequently used in different mythologies as symbols of immortality or reincarnation. One of the most popular stories attached to apple is that of Adam and Eve, who ate the forbidden fruit from the tree of good and evil which was in the center of the garden of Eden. The Latin word Malus has two meaning i.e. apple and evil, which has probably stemmed from this story from bible. In Greek mythology, mother earth or Gaia, presented a tree with golden apples to Zeus and his bride Hera on their wedding day. These golden apples were later indicated with many stories of love, bribery and temptation ranging from the abduction of Helen of Troy to the defeat and marriage of Atlanta. Goddess Pomona was deity of fruit trees in Rome. In many cultures, garden of paradise and pleasure is symbolized as the place with fruit-laden apple trees. Apple is popular because of its delicious taste and pleasant aroma.

3.1 GENERAL DESCRIPTION

Indigenous communities depending mainly on hunting, collection of food from the forests and managing natural resources to meet their requirements, have lived intimately with nature. Shifting cultivation has helped these communities to earn their livelihood for centuries to become to be food secure. Besides being a source of subsistence, the shifting cultivation has also been a repository of agro-biodiversity. Not considering this, the authorities have tried to impose the practice of intensive agriculture on indigenous people for conversion to mainstream agriculture (Singh et al. 2016). The way of life of indigenous people has been grossly impacted by the stress of market oriented development, government schemes, and interventions by some NGOs. The ‘dimensions of shifting cultivation’ not only includes the area under shifting cultivation and the number of shifting cultivators in the world but, various forms, shapes, methods and other aspects of the practice on spatial and temporal basis as well (Fig. 3.1).

Several products of fruits and vegetables are prepared on commercial and home scale. Products development from fruits and vegetables is the best way to utilize excess produces and save them from post harvest losses..

Value Addition

This is the process of improving the value of a commodity through processing by changing its form, increasing its shelf life or better presentation like packaging. Value addition can be done through the ways.

13.0 INTRODUCTION

Cucurbits belong to the family Cucurbitaceae, commonly known as the melon or gourd family. The term cucurbits was coined by Dr Bailey. From nutritional point of view, cucurbit seeds are valued for their high oil and protein contents. Seed proteins and methionine of cucurbits are higher than legumes. Vegetatively propagated cucurbits are pointed gourd, ivy gourd and chow-chow. Long day of 16 hours and high temperature result in maleness. Short day of 9 hours results in femaleness. They are widely distributed in the tropics and warm temperate regions of south, southeast and East Asia, Africa including Madagascar, and central and south America. Cucurbitaceae family is represented by about 117 genera and 825 species. The most common uses of cucurbits are as vegetables and fruits. They are valuable sources of vitamins and minerals. The important cucurbits that are cultivated commercially are cucumber, watermelon, musk melon, long melon, round melon, bottle gourd, bitter gourd, ash gourd, ridge gourd, sponge gourd, pumpkin, squash, snake gourd, pointed gourd, spine gourd, ivy gourd and chow-chow etc. Cucurbits are used as vegetable, salads, dessert and pickle, and for making of sweets.

Vegetable: Bitter gourd, ridge gourd and sponge gourd, round gourd, pointed gourd and pumpkin are used as vegetables. Immature fruits of musk melon are also cooked as vegetable only in some areas.

Salad: Excellent salad is made from cucumber and little gourd.

Dessert: Muskmelon, water melon and cucumber are used as desserts.

Pickle: Cucumber, little gourd and bitter gourd are used for making pickles.

Sweets: Pointed gourd and ash gourd are used for making sweets.