eChapters

Introduction

Rice (Oryza sativa L.) is a staple food of over half the world’s people and is grown on approximately 146 million hectares, more than 10 per cent of total available land. Ninety seven per cent of the world’s rice is grown by less developed countries, mostly in Asia. Post harvest losses are considered to be contributed by storage alone, and not much attention was paid to losses occurring during harvesting, transport, threshing, drying, milling and pre-milling treatments. Quantitative loss of food grains was the main concern of the producers and the consumers. Qualitative losses at various stages were not fully recognized, but systematic studies by different organizations revealed that these losses are enormous and should be prevented. These losses cumulatively could be as high as 40 per cent and are normally accompanied by loss of quality also. Quality loss of products can take place at all stages but more particularly during drying or curing of harvested crops, storage, and milling and pre-milling treatments. Post-harvest attention is essential if the grains of higher production are to be fully exploited. Also the quality loss occurring in food grains can be extremely serious if the farming community is not aware of them.

The word biodiversity refers to the variety of living organisms (flora and fauna). Biodiversity or Biological diversity is defined as the variability among all living organisms from all sources, including terrestrial, marine and other aquatic ecosystems and ecological complexes of which they are part. Wilson, 1988 defined ‘Biological diversity’ or ‘biodiversity’ as that part of nature which includes the differences in genes among the individuals of a species, the variety and richness of all the plant and animal species at different scales in space i.e. local, regional, country wise and global, andvarious types of ecosystems- both terrestrial and aquatic-within a defined area.

The diversity of agro-ecosystems

Biological diversity deals with the degree of nature’s variety in the biosphere. This variety can be observed at three levels i.e., genetic, species and ecosystem.

a) Genetic Diversity

Genetic diversity refers to the variation at the level of individual genes. Tremendous amount of genetic diversity exists within individual species. This genetic variability is responsible for the different characters in species. Genetic diversity is the raw material from which new species arise through evolution. Today, the genetic diversity is made use to breed new crop varieties, disease resistant crops.

Organic producers, on the other hand, are looking for varieties that are suited to their local climatic and soil conditions and are not susceptible to disease and pest attack. Research has shown that in general these characteristics are more likely to be found in the older native cultivars. For example, conventional wheat grown in an organic system will have reduced protein content, whereas the selection of a variety suitable for the particular growing conditions will provide higher protein, and thus higher baking quality wheat to be grown. Research has also indicated that yields and disease resistance are better in native cultivars as opposed to modern varieties for vegetables (tomato, cucumber and melon) grown in an organic system.

Trans-boundary Animal Diseases (TADs) are highly contagious diseases of livestock in the world and transmissible diseases which have the potential for very serious and rapid spread, irrespective of national borders, which has serious socio-economic or public health consequence and they are importance in the international trade of animals and animal products. With rapidly increasing globalization, an associated risk of movement of trans-boundary diseases is emerging. Trans-boundary animal diseases represent a serious threat. They reduce production and productivity, disrupt local and national economies and also threaten human health (zoonotic). Trans-boundary animal disease is a concern globally; cumulative effort is needed at international level to minimize the spread of infectious diseases across the borders.
Considering that livestock rearing constitutes a significant share in the national economy of a developing country, it is imperative to take up disease control initiatives. Measures are required to safeguard the livestock industry from epidemics of infectious diseases and to uphold safe international trade of  livestock and their products. In this regard, it is essential to develop scientific and risk-based standards that facilitate the international trade in animal commodities.
Introduction
Trans- boundary Animal Diseases (TADs) are highly contagious diseases of livestock in the world. Moreover, their economic importance is a major constraint in international trade. Their implication on human Health and National food security cannot be over emphasized. Zoonotic diseases among TAD’s include diseases like West Nile Virus (WNV), Rift Valley Fever (RVF), Mad Cow disease (BSE), Bovine Tuberculosis and Highly Pathogenic Avian Influenza (HPAI). Other important TADs are Foot and Mouth Disease (FMD), Contagious Bovine Pleuropneumonia (CBPP), Lumpy Skin Disease, African
Swine Fever (ASF) and Newcastle Disease (ND). They have the potential for very rapid spread, irrespective of national borders and these diseases can cause serious socio-economic and possibly public health consequences.

2.1 Soil and Climate

Pomegranate grows well in sandy-loam and well-drained soils having a pH of 7.5. It can also be grown on light soils. Quality and colour development in light soils is good but poor in heavy soils. It tolerates salinity up to 9.00 EC/mm and sodicity 6.78 ESP. Even it can be grown well in slightly saline soils as it is considered a saline-tolerant plant (Patil and Waghmare 1983; Rao and Khandelwal 2001; Ram Asrey et al., 2002). Accumulation of salts, in excess of 0.5% of the soil mass causes dying off of growing roots. Interestingly, application of Paclobutrazol (250 ppm) was reported to reduce salinity damage (Saeed 2005). The presence of water-soluble salts like sulphates and chlorides and ex- changeable sodium negatively affect root formation.

Abstract

Spray drying is one of the most preferred methods of converting food and pharmaceutical solutions into powder form. Very high product throughput, hygienic and highly automated process and relatively benign thermal and dehydration stress on products associated with this process has made it ubiquitous in powder manufacture. Compared to freeze drying, spray drying is significantly less expensive both in terms of operation and capital costs. In this chapter, key features of spray drying such as underlying operational principle, types of spray nozzles used, the flow pattern of droplets/particles and drying medium within the drying chamber, the particle formation process of individual droplet are discussed in considerable detail. The modelling aspect of a single droplet subjected to spray drying environment has also been included. Finally, the most commonly considered characteristics of spray dried powders including morphology, crystalline/amorphous nature and solubility are highlighted and discussed.  The content presented in this chapter will be very useful for practising engineers, technologists, researchers as well as postgraduate and undergraduate students.

Introduction

Bundelkhand is an important region of Central India which is often called as heartland of the nation. It is spread in the geographical area of 7.08 mha, includes 14 districts seven, each of Uttar Pradesh and Madhya Pradesh and supports 1.84 crore (as per 2011 census) of socio-economically and culturally diverse population. The present region of Bundelkhand lies between approximately 23°10’ and 26°27’ (north) latitude and 78°4’ and 810 34’ (east) longitude. It lies between the Indo-Gangetic Plain to the north and the Vindhya Range to the south. Bundelkhand is a hot and semi- humid climate with highly variable depending on the region and with gently sloping upland, distinguished by barren hilly terrain with sparse vegetation, although it was historically forested. As with the rest of the Indian sub-continent, Bundelkhand experiences two main seasons, monsoon and dry. The monsoon brings over 90 percent of the annual rainfall between the months of June and September with the highest precipitation occurring in July and August. On an average, the region receives 75 cm to 125 cm of rain each year. The dry plains in the north usually receive less rain compared to the south- eastern part of the region. Minimum temperature varies from around 6-12 ^?C and maximum temperature varies from 38- 48 ^?C.

The region is blessed with plenty of natural resources. It had truly been endowed by nature, with beautiful mountains, good perennial rivers, fast flowing seasonal rivulets, large rich forest areas with valuable timber, fruit trees, numerous medicinal plants / herbs in almost each district. The rainfall here had been on average much better than many parts of India. Bundelkhand is a part of the central zone of India with a group of north-bound perennial rivers flowing and paying tribute to river Yamuna. From west to east these are Sind, Pahuj, Betwa, Dhasan, Ken, Baghein Paisuni and Tons. Along with Chambal and Yamuna these are ten major rivers. Other water resources in Bundelkhand are in form of water stored / conserved on surface termed as ponds, tanks, lakes etc. Bundelkhand has, undoubtedly, been one of the regions in India very much known for its historical rain-water management through man-made ponds, tanks and lakes. Topography here helped to build such structures but more than anything it reflected fore-sight and positive attitude of those rulers towards conservation of nature.

All food legislation is predicated on the food law, which protects public health and consumers’ regarding food. The regulation is applied to stages beginning from producing the food, processing and finally distributing the food and feed, apart from domestic use by consumers.

Endocrine glands secrete their products into the bloodstream and body tissues in conjunction with the central nervous system to control and regulate a variety of body functions (Fig. 26.1). Various endocrine glands described below have been discovered in fish that are associated with various tasks and functions.

26.1 Pituitary Gland

26.1.1 Introduction

The pituitary gland (=Hypophysis) is a central and discrete organ of the neuro endocrine system in fish playing critical roles in various physiological processes such as stress response and behaviour.

Introduction

The country’s population is growing at fast pace putting pressure on agriculture sector to grow more with declining resources. Proper planning and management become ever more crucial to ensure the sustainability of food production with minimal environmental footprints. Space technologies have unique advantages of providing large area synoptic coverage, with repetitive, objective and scientific datasets essential for monitoring a hugely vast and heterogeneous country like India. Agriculture being very dynamic and highly dependent on different natural resources needs continuous monitoring. Therefore these technologies have immense potential for application in the agriculture sector of the country. Space based technologies provide information on crops and natural resources on a real-time basis, proving unmatched opportunity for planning including in-season manipulation of crop production and management practices improving the resilience of farming against weather aberrations. Advanced estimates of regional agricultural output are critical to anticipate and mitigate the course of food shortage from sudden crop failure.

Incidentally, the first practical application of remote sensing in India was in the field of agriculture, wherein early detection of coconut wilt disease in Kerala was possible using air borne infrared cameras (Dakshinamurty et al. 1971). To explore the potential of space technology through satellites Joint Experiment Programme (JEP) started for defining the appropriate configurations of sensors in Indian Remote Sensing (IRS) satellites during the early 1980s. After exhaustive field experimentation, the potential of remote sensing (RS) technology to estimate crop yield and area to forecast its productivity at district and regional level due to the multispectral, large area and repetitive coverage was established. By that time this technology was being used operationally used by a few advance nations. With the launch of the first IRS satellite IRS-1A in 1988, in India

Introduction

Consumption of milk is deeply rooted in our traditions, and it is an inevitable part of the Indian diet and even has ritualistic and medicinal uses. Milk is the first and one among the most nutritious foods that every mammal consumes on earth. It supplies all the nutrients needed to ensure proper growth and development in the postnatal period. Dairy foods in general are commonly considered balanced and nutritive, being frequently included as important components of a healthy diet (Pereira, 2014). Four components of milk are dominant in quantitative terms: water, fat, protein and lactose; while the minor components are minerals, enzymes, vitamins, and dissolved gases (Guetouache et al., 2014). On an average, bovine milk is composed of 87% water, 4 to 5% lactose, 3% protein, 3 to 4% fat, 0.8% minerals, and 0.1% vitamins. Milk and milk products contribute not only nourishment to the consumers, but also livelihood opportunities to farmers, processors, shopkeepers and other stakeholders in the dairy value chain.

Bonsai is an art of growing and training of a woody plant in a miniature form in a shallow container imitating natural look of an old aged tree. It differs from a pot plant where either the foliage or the flower is the main criterion, but here the artistic look of the tree in a miniature and natural form maintained for many years is desired.

The word Bonsai’ is a combination of two Japanese words, Bon (meaning shallow pan) and Sai (meaning plant), which can be translated as “tray planting”. By growing the trees in shallow containers, the growth is checked or dwarfed but the plant is not starved. A properly maintained bonsai should outlive a full size tree of the same species. Bonsai is a small tree in comparison to its huge life-sized tree of the same species. Thus, Bonsai is specially trained ordinary tree or plant, not special hybrid dwarfs. Bonsai culture is viewed as a hobby that allows greater understanding and association with nature. This art of bonsai is linked with Zen Buddhism - where this art originated as pastime that merged with natural elements and developed into a unique method of meditation and expression. The bonsai is even expressed as “heaven and earth in one container”

Bonsai is developed from seeds, cuttings, layering or grafting from young trees or from naturally occurring stunted trees transplanted into shallow containers. Most bonsai range in height from 5 centimeter (2 inch) to 1.2 meter (4 ft). Bonsai is kept small and trained by pruning branches and roots, periodic repotting, pinching off new growth and wiring the branches and trunk for giving desired shape. Tradition holds that three basic virtues are necessary to create a bonsai: shin-zen-bi standing for truth, goodness and beauty which are parallel to Hindu concept of Satyam, Shivam, Sundaram. The bonsai must look natural and should never show the intervention of human hands (with the exception of Chinese bonsai which in many cases depicts images of dragons and other influential symbols of the culture at the time of origination). Bonsai is primarily kept outdoors in partial shade with exception of some plants suited, trained and indoor grown. In traditional Japanese rooms, there is a tokonoma, the alcove, specially designed for the display of bonsai on special occasions. Bonsai can live for hundreds of years with utmost care and the prized specimens are being passed from generation to generation, admired for their age and valued as a reminder of those who have cared for them over the centuries.

Onion, Allium cepa under the family Alliaceae (Amarylidaceae) having chromosome No. = 2n × 2x = 16 is an important vegetable cum spice crop grown in almost all parts of the world. The four major onion growing countries in the world are China, India, USA and Turkey. Other important onion growing countries are Iran, Italy, Egypt, The Netherlands, Russia, Thailand, Indonesia, Korea, Japan and Brazil. Onions are the fundamental ingredient in many dishes of the Asian countries. In India, important onion growing states are Maharashtra, Karnataka, Tamil Nadu, Andhra Pradesh, Gujarat, Punjab, Haryana, Rajasthan, Uttar Pradesh, Bihar and Madhya Pradesh. In India, onions are cooked for the preparation of stews, curries and as a base for rice pilafs or pilau or used fresh as salads. Onions are widely used in American cuisine, from burgers and sandwiches to soups and stews. Fried onion rings are a popular side dish. Onions are healthy whether consumed as raw or cooked however, raw onions have higher levels of organic sulfur compounds that provide many health benefits.
Origin, domestication and adaptation in India
The geographic origin of the onion is uncertain because the wild onion is extinct andancient records of using onions span western and eastern Asia. However, it is presumed that domestication of onion likely took place in Southwest or Central Asia comprising Iran, Afganistan, western Pakistan Tadzhikistan and Uzbekistan. Its secondary centre of origin is in the Mediterranean region. Its cultivation has spread in Western Asia from Palestine to India. It entered northern Europe through Italy and north Africa during 500 AD. It was introduced in the USA by the early Spanish explorers around 1625 AD.

5.1    Global Food Production
    5.1.1    Area Under Cultivation
    5.1.2    World Food Production
    
5.2    Variability in Global and Indian Food Grain Production
    
5.3    Impact of Phenomenal Drought During 2009 on Food Grain Production in Different Countries
    
5.4    Impacts on Livestock and Fisheries
    5.4.1    Livestock
    5.4.2       Milk Production
    5.4.3    Fisheries
    
5.5    Estimation of Food Grain Production in India using Rainfall indices
    5.5.1    Trend in the annual food grain production
    5.5.2    De-trended production index
    5.5.3    Construction of rainfall indices (RI)
    5.5.4    Development of model for estimation of production index
    5.5.5    Verification of model performance
    5.5.6    Estimation of Kharif Price Production
    
5.6    Forecasting of Agricultural Output Using Space, Agrometeorology and Land based Observation (FASAL)
        
References

Agricultural robotics addresses labour shortages, production demands, environmental concerns and the need for greater operational precision. This chapter examines unmanned aerial vehicles, autonomous ground machines, robotic manipulators, greenhouse robots and livestock systems. Enabling technologies include multimodal sensors, computer vision, navigation, control systems and artificial intelligence. Applications extend from land preparation, sowing and crop monitoring to weeding, spraying, irrigation, harvesting and post-harvest processing. Emerging approaches such as reinforcement learning, digital twins, swarm coordination and soft robotics are also explored. Technical reliability, high investment, connectivity, labour displacement and data ownership remain important barriers. Future development must prioritize accessible, affordable and farmer-oriented automation platforms.

In general crop is an organism grown or harvested for obtaining yield. Agronomically crop is a plants cultivated for economic purpose.

Classification of Crops

Classification is done to generalize similar crop plants as a class for attaining better understanding of them. Field crops are classified in the following ways.

1. According to range of cultivation
2. According to the place of origin
3. Botanical classification
4. Commercial classification
5. Economic / Agricultural / Agrarian classification
6. Seasonal classification
7. Classification based on ontogeny

7.1 The purpose and type of models

Sometimes the simplest way to estimate the effect of a physical process is to use an established equation, or formula, or charts and diagrams based on existing knowledge. The current fashion is to call such aids and solutions models, and they tend to become increasingly complicated and consequently dependent on computers to handle the mathematical processes.

It is important to identify the exact objective and purpose of models which are designed to estimate soil erosion. Two main divisions are models for prediction and models to assist with explanation. If the purpose is to predict amounts of erosion under alternative management practices then empirical models such as the USLE are efficient and effective. For an understanding of the processes of erosion it is necessary to turn to physically-based or deterministic models. The two objectives should not be cross-threaded onto the wrong kind of model, i.e. the USLE should not be seen as a vehicle for research studies on the mechanics of erosion. Neither should sophisticated simulation models be used as the basis for evaluating conservation practices which are better designed on the basis of experience, and evaluated by direct testing in the field.

The different kinds of models need a short explanation:

An empirical solution or model is one based on observation or experiment, and not derived from theory. It fits observed facts, and allows us to predict what will happen in certain circumstances, because we know what has happened before in those circumstances. The reliability of such methods depends on the database of experience: we might say This will certainly happen’ (because it always does), or “Will probably happen’ (because it usually does), or ‘it may happen’ (because it sometimes does). An empirical solution may be a simple approximate relationship or a complex multiple regression equation.

Eventhough nematodes occupy nearly every habitat on earth, they are remarkably similar in morphology and life stages. Despite their structural complexity, certain basic principles are common to all nematodes. Nematodes are triploblastic, bilaterally symmetrical, unsegmented, pseudocoelomate, vermiform and colourless animals.

Abstract

Food dehydration is an oldest method to increase the shelf life of food by reducing the water activity. A dried food product provides advantages of increased shelf life and reduced cost due to decreased weight as well as transportation. However, there is a decrease in product quality due to inadequate control on drying process parameters such as drying temperature and moisture removal together with change in thermo-physical properties of food. Computational modeling and simulations can provide a unique insight on the drying parameters that influences the product quality, and optimize the process conditions which are difficult by experimental analysis. Moreover, the computational techniques are advantageous over experimental optimization methods by minimizing the time and cost. This chapter reviews different computational modeling techniques such as, finite element modeling, finite volume and finite difference methods for modeling of food dehydration process. Also, this chapter describes the application of modeling techniques for determining the influence of shrinkage and porosity during dehydration.

Introduction

Poverty has been described as a situation of “pronounced deprivation in well being” and being poor as “to be hungry, to lack shelter and clothing, to be sick and not cared for, to be illiterate and not schooled. Poor people are particularly vulnerable to adverse events outside their control. They are often treated badly by institutions of the state and society and excluded from voice and power in those institutions.” Lack of access to resources is a unifying characteristic of poverty in all its manifestations. The poor lack ownership of or access to assets such as land, water, forest, dwelling units, credit, literacy, longevity, voice and capital-both physical and social. Those who are severely below the poverty line are largely involved in subsistence type activities for which they get exploitatively poor returns despite suffering extreme physical hardship and undertaking grave risks so as to earn a meager income. Since earnings are below even the margins of existence, expenditure and survival needs exceed income. This often results in the need to borrow small amounts of money at usurious interest rates of as much as 120 per cent per annum (Mehta, 1996) when borrowing is not possible, hunger is suffered. Their inability to change the power relationships results in scarcely available common resources (such as even drinking water) or public funds meant for poverty alleviation being misappropriated and diverted through manipulation by the locally powerful or corrupt. Since there are no mechanisms for grievance redressal this could result in social tension, despair or a combination thereof.

Introduction

Oils and fats are utilized both for their food applications as well as for industrial purpose. As a food product, oils and fats are consumed in a variety of forms such as shortening, ghee, butter, margarine, cooking oil, salad oil, etc. Other uses include their usage in the form of lubricants, greases, soaps, cosmetics, paints as well as animal feed and biofuels. Among the Asian countries, Indonesia leads as the prime producer with more than fifty percent of the total palm oil production in the world. As a second-best producer of oils and fats, China was the major manufacturer of rapeseed as well as soybean oil in year of 2018. In general, Asian countries contributed to more than fifty percent of the total fat and oil manufacturing in the world in 2018 (Kushairi et al., 2018). Even though fats and oils are primarily utilized for food applications, there has been an increased interest in their industrial utility for the manufacture of biofuels. Fats manufactured from various animal sources like tallow or lard also contribute to a considerable quantity and compete with vegetable oils for the production of biofuels.

The resources for producing oils and fats are diverse depending on their end use, yet they are obtained from two major sources: animal sources and plant sources. Oils and fats are used as starting materials for the preparation of shortenings, margarines, and other tailored products that further act as functional ingredients in food products prepared by food processors, restaurants, and in home. They have been used for food and other variety of applications since the prehistoric times, due to their easy availability. For example, fatty tissues from animals liberate free-floating fats on being boiled, whereas oil can be pressed out from oil fruits and oilseeds.

The role of dietary oils and fats in human nutrition is also one of the important areas of interest. Over the time, oil and fat industry has provided significant contributions toward nutritional improvement of various products. With the growing concern linked between cardiovascular diseases and consumption of oil and fat products, low-calorie variants of different foods, free or low in cholesterol are also available now. Excessive fat consumption among the populations of developed countries and consequences of obesity has led to the development of reduced-fat and very-low-fat variants of foods.