eChapters

In general, disease means an impairment of health or a condition of abnormal functioning. Plant disease is an abnormal deviation from the normal physiological functioning of the plants their by it causes quantitative and/or qualitative losses. Disease may caused by biotic agents (infectious) like fungi, bacteria, viruses, viroids, phytoplasma, spiroplasma, fastidious bacteria, protozoa, nematodes and parasitic higher plants or abiotic agents (non-infectious) like extreme environmental factors includes temperature, light, soil moisture, atmospheric humidity, environmental pollutants, carbon-dioxide concentration, soil nutrient deficiency, acid rain, soil pH and herbicides. 

Extensive studies have been carried out to explore the possibility of using mycorrhizal model system in inducing suppressions of potential soil-borne pathogens. Its relevance becomes all the more important since most of the soil-borne diseases, by and large, are not easily controlled by conventional methods.

Diseases due to Fungal Pathogens

Most of the studies conducted on the interaction of VAM fungi and fungal pathogens suggest that mycorrhizae decrease the severity of disease, while a few studies suggest that there is either no effect or there is an increase in the severity of disease. It has been pointed out that in view of the fact that VAM fungi deter the severity of disease they may be used as biocontrol agents. Various mechanisms by which VAM could suppress the fungal pathogens have been suggested on the basis of experimental evidences.

Abstract

Ensuring the provision of safe and healthy working conditions to all workers and promoting the availability to them of certain minimum welfare amenities are the constitutional obligations of all employers as well as the Indian state. Enlightened employers tend to provide for these facilities on their own, as part of their performance and retention strategies. Others, however, largely consider these obligations as burden. Some recent researches reveal that the pursuit of numerical flexibility policies is becoming rampant amongst employers in the advanced world; they are doing so to cut costs and become more competitive. This means more use of labour-cost-saving devices and neglect of some basic rights of workers. Of course, intense competition amongst companies puts pressure on them to attempt cost-cutting and ignore these legal provisions. It should be noted however, that the law relating to working conditions is perhaps the most basic of labour laws in any country; therefore, its sanctity has to be maintained with an added responsibility by all concerned and as a societal value.

India is bestowed with varied agroclimate ranging from mild tropical zones to alpine zones and congenial for several types of ornamental plants in different seasons. Worldwide China and India have large total areas under flower cultivation. Among top ten cut flowers, rose ranks the first position followed by spray chrysanthemum, tulip, lily, gerbera, cymbidium, freesia, chrysanthemum, anthurium, alstroemeria and carnation. In view of rapid changing global competition, diversification into lesser known potential new ornamental plants play key role in fetching premium prices. Most of the potential exotic ornamentals plants have been introduced from Australia, South Africa, Israel, New Zealand and Eastern USA. There are about more than 60 types of new ornamentals reported to be hold potential for commercial importance. All these newly introduced ornamental plants require the following stages of research and development.

Among angiosperms, there are about 18 families which have more than 30 genera which produce tubers. Most genera have many species which are tuberizing, most of which are unknown to man even now. The history, origin and distribution of only a few species which are economically important root and tuber crops and which are commonly used by men for edible as well as medicinal purpose are elucidated in this chapter.

1. Sweet Potato

Exact centre of origin of sweet potato (Ipomoea batatas), and the routes and times for its dispersal to some of its present locations, are still in dispute and are likely to remain so until further archaeological or ethnobotanical evidence is available (O’Brien, 1972).

The North Eastern region stretches from 21°25' to 29° 28' N and 80° 4' to 97°25' E and covers a total geographical area of 2.55 lakh square kilometer sharing about 8 percent of the country’s geographical area. The NE states, otherwise known as eight jewels, which are Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, Tripura and Sikkim. This region is characterized by inaccessibility, marginality, fragility, cultural heterogeneity, ethnicity, rich bio-diversity, low livestock and crop productivity. These states are the reservoirs for genetic diversity of tuber crops like Colocasia, Xanthosoma, Alocasia, elephant foot yam, Dioscorea and other minor tuber crops. The annual precipitation in the region is about 2450mm and maximum rainfall is received from South West monsoon.

Tropical root and tuber crops are important staples for food security for about a fifth of the world population. Tropical root and tuber crops like cassava, sweet potato, yams and aroids [taro and elephant foot yam] come under tropical root and tuber crops. Sweet potato, yams and colocasia are processed mainly as fresh vegetable, whereas 75% of the cassava in Africa, 75-80% in Asia and 65% in Latin America are processed either as fermented foods and feeds or as food additives such as starch, starch based sweeteners (glucose and fructose syrups), organic acids (acetic, lactic, glutamic and gluconic), mono-sodium glutamate and microbial polysaccharides (xanthan, pullulan, scleroglucan, etc).

1. Introduction

A cooperative agricultural extension service has been implemented in Japan by both national and prefectural governments to support small-scale farmers who emerged as a result of land reform after the Second World War (Yamada, 2008).  In recent years, however, the scope and level of agricultural extension advisors’ activities have become more sophisticated and diversified because of technological progress and a wider range of activities, from production and selling to promoting relevant political measures.  On the other hand, the number of agricultural extension advisors has been decreasing for several years because of a cut in government expenditure for the cooperative extension service.  For this reason, information and communication technology (ICT) is needed to promote advanced and efficient extension activities (Yamada, 2010).

Abstract
 
Nigeria has a very large domestic market, but consumers, farmers, processors and other agribusiness investors are often faced with challenges getting timely and relevant information. However, it has been found out that in Nigeria many people preferred receiving information over a mobile phone than a computer. The problems farmers encounter in exchanging information and that more than half of Nigeria’s population are mobile phone subscribers of which majority of them are farmers necessitate overview of Information and Communication Technologies (ICTs)  and agricultural development in Nigeria. Literatures were consulted, secondary data, and personal observations were tools used to compile the chapter contribution.

One of the integral components of human and animal liveli hood is food and water without which life cannot sustain on  earth. However, due to high nutritive value of foods and ubiquitous nature of microbes, it is always at risk of microbial spoilage and contamination. World Health Organization (WHO) defined “food-borne illnesses” as diseases, usually either infectious or toxic in nature, caused by agents that enter the body through the ingestion of food. Every consumer is at risk of food-borne illness but conversely every incidence of foodborne illness is potentially preventable. Several bacterial pathogens in particular are responsible for foodborne infections and intoxications.

Farming is the intervention of man in the growth cycle of plants, animals or birds to get utility products of choice at maximum levels and of highest quality. The growing and caring of plants is called Crop Husbandry, and that of animals is called Animal Husbandry. Farming is our most basic activity. It is considered as the backbone of Indian economy. Farming not only nourishes the whole population, but also provides a means of livelihood to more than 60 per cent of our population. Our history, culture and community values are embedded in farming. Today when we think of farming, what comes to our mind are long stretches of farm land, farmer tilling the field, pumping water into fields, applying fertilizers or pesticides, plants with so many fruits, tractors with loads of farm produce, cross bred cows, a farm chicken, aquaculture, fish and so on. A more advanced image on this subject will be of the small plantlets in conical flasks or test tubes, what we call Tissue culture, High Yielding Varieties (HYV), Genetically Modified (GM) crops, Green House farming and other techniques that increase the crop yields. So all these activities are considered as the products of science that our scientists were able to develop over a period of time and helped the growing population to meet their food requirements.

Organic food production is as much a state of mind as it is a production system. The organic farmer must understand how everything is interrelated and how one set of circumstances will influence other factors in how the plant grows. A strong, healthy plant is much more important in an organic system then a conventional system. A two to three year leaning curve must be accepted by anyone intending to switch from conventional to organic farming. What works one year may fail the next.

1.1 Water and its Importance

Water has played a crucial role in sustainace of lives of all living beings including animals, plants and human beings in this earth since time immemorial. It is there since the creation of the nature and will probably remain till the destruction of the nature. It is used in multifarious uses including domestic, industrial, agricultural, recreational and many other uses. It occurs in the nature in practically three forms i.e. solid, liquid and gaseous forms. All the three forms are important to living beings; but the liquid form of water is more beneficial. The weight of the water helps in running hydroelectric turbines, the density of water helps in floating the ships, the steam energy produced by heating the water helps to run the locomotives and thus is beneficial in many ways. It is considered as the most important resource of the society. It has become part and partial in our life so that we cannot live without water. That is why water is called as life.

Abstract

Drying remained at the centre stage since the initiation of the food processing due to its promise to preserve agricultural products economically and add functionality to a food product unlike other thermal as well as non-thermal food processing operations. However, many existing drying techniques have their own limitations like nutrient loss, damage of the organoleptic quality, high cost etc. Therefore, research for better drying technologies is going on. Supercritical drying (SCD) is one such technology which utilizes higher dissolving power of super critical fluids (SCFs) to dry food products. The current chapter illustrates the mechanism of SCD as well as current state-of-art and promise of the drying technology. Also, some modelling approach of SCD has been included in the discussion to facilitate new designs and optimization of SCD for various food products.

The global production of cocoa is around 36.49 lakh tonnes against the demand of 37.37 lakh tonnes. Ivory Coast leads in cocoa production in the world with a contribution of 38 per cent, followed by Ghana and Indonesia. Unlike in other crops, it appears that the production and demand of cocoa at the global level match each other to a large extent. However, the recent trends in the world production of cocoa beans indicated that there was a drop of nine per cent in 2006–07, declining from 3.8 million tonnes in 2005–06 to 3.4 million tonnes in 2006–07 (Table 9.1). It was attributed to unfavourable conditions in many cocoa producing areas. West Africa, the main cocoa producing region, was hit by a severe harmattan (dusty dry wind from November to March) and its inherent dry weather, which lasted from the end of 2006 to February 2007, had a strong negative impact on global cocoa production. In Asia and South America, El Nino- related weather conditions developed in September 2006 and continued until the beginning of 2007. It led to relatively low cocoa production in 2007–07. However, it was rebounced in 2007– 08 to some extent though it was low (36.49 lakh tonnes) when compared to that of 2005–06. The favourable weather which prevailed over most of the cocoa growing regions during 2002–03 and 2003–04 helped to achieve better production during the above years while dip in the global production in 2006–07 due to unfavourable weather. It reveals that the weather abnormalities like floods, droughts, cold and heat waves across the cocoa growing regions of the world adversely affect the Coca production and the cocoa industry is likely to suffer.

Urbanization coupled with industrial development creates problems of environment like air pollution, water pollution, noise pollution and civic ugliness. Of late, there is a greater awareness of environmental issues and increasing understanding of several attributes of vegetation. This led to an intensification of activity in the field of landscape horticulture to combat pollution and create an aesthetic environment for recreation and healthy living. Planning and execution of landscape projects for different urban locations should be done to meet both aesthetic and ecological requirements.

Water is a critical input for crop production. Its optimum availability is important in augmenting and sustaining crop productivity. Lack of adequate supply of water can limit crop yields ranging from 10 to 90% or even be subjected to mortality if moisture go below permanent wilting point. It is also observed that the moisture shortage during some critical crop growth stages would cause severe detrimental effect. This necessitates us to provide irrigation to crops at right quantity and frequency. In other words, irrigation schedule plays key role in optimizing or maximizing crop yield. Moreover, judicious use of irrigation water has potential to enhance the agricultural productivity which in turn would lead to food security. As water resources are getting diminished day by day, the application of water saving techniques would be needed for addressing the food security objectives of the nation.

Technologies for cultivation of crops are changing over the years. Adherence to the principles of conservation, high input-use efficiency and higher productivity with optimum inputs and the very idea of crop production as a business venture; all these are leading to increased adoption of high technological (high-tech) crop production practises.

Abstract

Ongoing rise in human population and affluence, and socioeconomic imperatives continue to demand more efficient and productive use of global finite resources. This is particularly true with water which society has to share between its domestic, industrial, agricultural, environmental and recreational purposes. With greater concern for nature and environment, and the socioeconomic development more water must be allocated to non-agricultural uses. Increasing crop water productivity (WP) is a key response option conserves water, energy and soil while satisfying society’s increasing demand for crops for agricultural products. Improvements to crop WP help to meet rising demands for food from a growing, wealthier, and increasingly urbanized population, when at the same time there are pressures to reallocate water from agriculture to cities and to make more water available for environmental uses contribute to the urgency for achieving gains in agricultural water management. The papers in addition to the rationale and basic concept of crop WP, explore the techniques for crop WP increases.

ABSTRACT

The Village Knowledge Centre programme was started in January 1998 in the Union Territory of Pondicherry (now Puducherry) in the east coast of South India with the support of IDRC and CIDA. In order to ensure access to all, the VKCs are located in public buildings (Panchayats, SHG’s building, Community Hall, School, Farmers and Fishermen Associations, Women Self-Help Groups, Community Based Organization, etc.,). The information content is developed in close interaction with the local people in a bottom-up manner.

Flowers blooming in a garden can be preserved by drying them for use in arrangements, decorations and various other applications. Natural dry flowers can be annual or perennial. Some of the important annuals used for dry flower making are described below.

14.1 Annual Flowers

Plants classified as annuals are those that complete their life cycle within the space of one year. Annual flowers are versatile and sturdy. The annuals have many uses in landscaping. Annual flowers are beautiful and garden lovers tend to preserve these flowers throughout. They dry these flowers and store them for use in several beautiful dry flower arrangements.

Lipids are a hetrogenous group of substances, widely distributed throughout the plant and animal kingdom. In plants they are present in the seeds nuts and fruits, while in the animals they are stored in adipose tissues, bone marrow and nervous tissues. Lipids are relatively insoluble in water and readily soluble in organic solvents such as ether, chloroform, carbon disulfide, benzene, hot alcohol etc. The term lipid was used by the German biochemist Bloor in 1943 for a major class of tissue components and foodstuffs.

Abstract

Electronic waste or e-waste is one of the emerging problems in developed and developing countries worldwide. The constantly changing today’s world of technology has led to the serious problem of e-waste. The previous studies show that India has generated 0.6 million tons of e-waste in 2014 which may increase to 0.7 to 0.9 million tons by 2015–2016. E-waste constitutes multiple components some of which are toxic that can cause serious health and environmental issues if not handled properly. The challenge is to develop innovative and cost-effective solutions to decontaminate polluted environments, to make them safe for human habitation and consumption, and to protect the functioning of the ecosystems which support life. Biological approach is currently applied to recovery of metals from contaminated soil, groundwater, surface water, and sediments including air.

Abstract

Various cropping systems and ecologies illustrate the positive use of chemicals both as fertilizers and pesticides and organic/biological sources within the frame work of Integrated Plant Nutrition and Plant Protection System (IPPS). While considering the organic/biological sources, green manures seem to be the best alternative that may largely suffice to the organic matter requirements of the soil under crop cultivation. Green manuring can be defined as a practice of ploughing or turning into the soil undecomposed green plant tissues for the purpose of improving physical structure as well as fertility of the soil. “Green manure” refers to fresh plant matter, which is added to the soil largely for supplying the nutrients contained in its biomass. The agricultural practices consisting of growing and ploughing under a green crop or addition of a green organic matter in the form of leaves and other succulent parts from outside to improve soil productivity is known as green manuring. In this review, advantages of green manuring, decomposition of green manure,   process of decomposition, factors affecting decomposition and effects of green manuring have been discussed in detail.

Packaging is an integral part of fruit and vegetable processing. It has  major influence on storage life and on marketability of fresh as well as processed products. Packaging fulfills several functions including containment, facilitating transportation, protection of fruit/vegetable from further damage, protection of environment from contents of package (for example, if the contents are dirty), marketing, product advertising, and stock control.

Gerbera, commonly known as Transvaal Daisy, Barberton Daisy or African Daisy, is cultivated throughout the world under a wide range of climatic conditions for its attractive flowers. It is highly suitable for beds, borders, pots and rock gardens. The wide range of colour and the attractive shape of flowers suit very well in flower arrangements. The cut blooms have long vase life. Today Gerbera is known as an important commercial flower crop and belongs to the most important plant species in the world, together with the rose, chrysanthemum, carnation and tulip. Gerbera is amongst the ten most important commercially grown flower crops in the world.

Orchids are the royalty among flower crops. They exhibit an incredible range of diversity in size, shape and colour of flower. They are valued as cut flowers and potted plants and are the most pampered plants. Orchid flowers are famous for the long lasting characteristics and bewitching beauty. No other plant has probably acquired the status of orchids. They have always been considered as mysterious plants.

The word Cymbidium has been derived from a Greek word ‘Kumbos’ meaning ‘hole or cavity’ referring to the structure of the base of the lip. The genus consists of 44 known evergreen species in the family Orchidaceae, subfamily Vandoideae, tribe Cymbidieae and sub-tribe Cryptopodiinae. It is distributed from northwestern India to China, Japan, south through the Malay Archipelago to the north and east Australia. (DuPuy and Cribb, 1988). Cymbidiums have been for over hundred years one of the most famous orchids in commerce.

Terminology

    ·    Nutrient: Nutrients are substances required by an organism for their normal     growth and reproduction. 
    ·    Plant Nutrient: The plant nutrient is a “food” which is composed of certain chemical elements often referred to as ‘plant nutrient’ or plant food elements considered very essential for growth and development of plants. 
    ·    Nutrition: The supply and absorption of chemical compounds needed for growth and metabolism of an organism.

Abstract
 
India shares 16% of the world population, while its land is only 2% of the total geographical area of the world. Naturally, the pressure on the land is often beyond its carrying capacity. Therefore, the productive lands, especially the farmlands in the India are in the constant process of various degrees of degradation and are fast turning into wastelands. At present, approximately 68.35 million hectare area of the land is lying as wastelands in India. Out of these lands, approximately 50% lands are such non-forest lands, which can be made fertile again if treated properly. It was unprotected non-forestlands, which suffered the maximum degradation mainly due to the tremendous biotic pressure on it. In the last 50 years it is India's lush green village forests and woodlots have been deforested to the maximum. 

Abstract

This paper is the result of strong belief that if earth observation and geospatial techniques could be applied to a village to plan its natural resources in sustainable manner, the potential of this technique for common man is harnessed maximum. So analysis of one village natural environment, predicting its impact on humans, identifying certain possible inhabitable conditions due to existing nature & suggesting ways to utilize these conditions for sustainable human's and nature's existence  is the motive behind this work.

F    :    Faraday constant. OR Food - represents BOD in the F/M ratio. Expressed in pounds.

F factor    :    The fertility factor, a plasmid that carries the genes for bacterial conjugation and makes its E. coli host cell the gene donor during conjugation. OR A large bacterial plasmid, known as the sex-factor plasmid because it permits mating between F+ and F- bacteria. 

Alstroemeria belongs to the family Alstromeriaceae. Alstroemeria flowers third in terms of popularity and foreign exchange earnings in Kenya after roses and statice. Alstroemeria is named after a Swedish botanist “Baron Klas von Alstroemer”. The popularity of this flower is still growing in the global perspective. It is one of the quickest growing flowers with varying colours like purple, lavender, salmon, red, pink, white, orange, yellow and bicolour. It is grown for cut flowers but is also popular as a potted plant. It is grown in the higher ranges of the Western Ghats, Himachal Pradesh, Jammu & Kashmir and Karnataka in India.

Rhododendron belongs to family Ericaceae. The word “Rhododendron” is derived from the ancient Greek word “rhódon” which means rose and “déndron” which means tree. This genus is characterized by shrubs and small to (rarely) large trees. The smallest species grow up to 10–100 cm tall and the largest Rhododendron giganteum is reported to grow over 30 m tall. They are noted for their clusters of large flowers. The alpine species have small flowers and small leaves and tropical species grow as epiphytes. The colour of the rhododendron flower is available in nearly every colour of the rainbow including various shades of blue, yellow, pink white, red, orange and purple. Rhododendron flower from January through August, depending on the location and the climate.

Begonia is a perennial flowering plant belongs to family Begoniaceae. Begonia has rich colour and beautiful form of flowers. It is free flowering and striking foliage with free growth. The name Begonia is given by Franciscan monk Charles Plumier a plant which he found during his journey from Haiti to island Martinique. He dedicated this plant to “Michel Begon” the man who had the direct manmade over the expeditions. Begonia is easy to propagate and grown from seeds and vegetative means particularly cuttings. It is a popular flowering potted plant grown in containers and hanging baskets including tuberous, semperflorens, Rex, Elatior, Loraine and gracilis. Modern commercially cultivated begonias are mostly hybrids between wild types from all over the world.

Abstract

Water has become a scarce resource all over the World. Water resources of Earth can be classified as surface water and groundwater in which groundwater is the main source for the drinking, domestic and agriculture. The Pudukkottai district is one of the chronic drought prone areas in Tamil Nadu. But, at the same time, the district is pitted with over 5,400 tanks/water bodies widely distributed throughout in general and clustered more in Vellar delta in particular, as the interlobel depressions have provided basic depressions for the surface water to accumulate. However, these surface water bodies are heavily silted. In Pudukkottai district, there are three divergent aquifer systems, hard rock aquifer system in the western, sedimentary aquifer system constituted by the Tertiary Sandstone (Cuddalore Sandstone) in the central and Quaternary aquifer system constituted by fluvial, fluvio-marine and marine systems in the eastern parts of the district.

Introduction

Rhizobia and Frankia are soil bacteria that exhibit symbiosis with their particular hosts owing to their ability to understand the intricate signals excreted by the host roots. Rhizobia exhibit symbiosis with legumes and one species member of Ulmaceae family Parasponia andersonii while actinomycetes Frankia forms the group of nitrogen-fixing bacteria that live in symbiosis with a large spectrum of dicot plants distributed among eight families consisting of over 24 genera and around 200 species of angiosperms (Benson and Silvester, 1993) and are collectively responsible for 15% of the biologically fixed nitrogen in the world. This Frankia-woody tree or dicotyledonous plant interaction results in evolution of the actinorhizal plants and the symbiotic interaction is described between Frankia (actino) and plant roots (rhiza).

Introduction

Increased population pressure, reduced length of fallow, deforestation and improper agricultural practices have led to widespread soil degradation in many parts of the developing world which has culminated in appearance of determinative manifestations of environmental damage in form of inadequate replenishment of soil nutrients and organic matter. Phosphorus is second major plant growth limiting nutrient and despite being in abundance in soil (organic and inorganic form), P deficiency is becoming critical in many soils throughout world as these soils have free available P concentration (generally) not higher than 10mM even at most soluble slight acidic pH (Arnou, 1953). Moreover, consistent P deficiency threatens to disturb the use efficiency of applying other nutrients. Hence to preserve the sustainability of agriculture it is foremost to rebuild soil fertility and maintain/improve the soil biodiversity to reap hiked current levels of productivity and farm income.

Pulses are considered to be the most effective means of overcoming protein and micronutrient malnutrition since they are excellent sources of dietary protein (19-25%), besides being rich in important minerals and vitamins (Ali and Kumar, 2004). In Bihar, people are mostly vegetarian in dietary habits and depend largely on pulses as the source of dietary protein. But production of pulses has not kept pace with the population growth and per capita availability of pulses has thus, declined from 61 g/day in 1950-51 to less than 28.0 g/day in 2001 as against 70 g/day the standards prescribed by ICMR. Moreover, in Bihar the contribution of cereals in total protein consumption is more than 73.0% which is not a healthy trend as cereal proteins lack many essential amino acids that are present in the pulses from which only 10.6% of total protein intake come in the diet of rural population. This alarming situation, perhaps, has arisen largely due to the quest for food security rather than nutritional security, being the prime national agenda. According to an estimate, more than 70% of gross cropped area in the state is occupied by paddy and wheat whereas, only 9.0% of it is shared by the pulses.

Madhya Pradesh is a major pulse producing state of the country and more than half a dozen of pulses are grown on 48.99 lakh  ha area with an annual production of 41.73 lakh tonnes and average productivity of 852 kg/ha (Table 1).  The pulses production share of Madhya Pradesh is 28.6% to national pulses production. Amongst the pulses, chickpea, pigeonpea, moong, urad, lentil and field pea are the important crops of the state. These crops contribute about 3296 thousand tones to national pulse basket from an area of about 4318 thousand hectares (Table 2). Among the pulse crops grown in the state, chickpea accounts 76% in production from 60% area. Second important pulse is lentil (13%) followed by uradbean (12%), pigeonpea (8%), field pea (5%) and mungbean (2%) with percent share of 8, 5, 7, 3 and 1 in production, respectively. The area and consequent production of pulse crops in the state showed, in general, an increasing trend since 1981 till date (Table 2 and Fig.1). Linear increase in yield of these crops from 531 kg/ha to 764 kg/ha in this period is also witnessed as the impact of technological advancement in these crops in the recent past. Natural calamities mostly drought in few to most of the districts is the main reason of low productivity in triennium ended in 2004.

Saffir-Simpson Scale : A scale relating a hurricane’s central pressure and winds to the possible damage it is capable of inflicting.
 
Sand Storm : An ensemble of particles of dust or sand energetically lifted to great heights by a strong and turbulent wind.
 
Santa Ana Wind : A warm, dry wind that blows into southern California from the east off the elevated desert plateau. Its warmth is derived from compressional heating.
 
Satellite Imagery : Images formed from data collected by a weather satellite that reveal visual information on the nature of the atmosphere such as the flow of water vapour, the development and movement of weather systems, or the distribution of the temperatures of cloud tops or the earth’s surface.

Saturated Adiabat : Any statistically valid thermodynamic diagram on a graph related to adiabatic change under saturated conditions of an air parcel. 

Abstract

India has diversified agro-climatic conditions with significant variability in climatic factors viz, rainfall pattern, temperature, humidity, sunshine hours and wind speed etc. A no of fruit crops and vegetable crops are grown in India with significant differences in climatic requirements for sustainable growth and production of these crops. Attempt has also been made to have off season production of horticultural crops. Weather variability could also play a pivotal role in disease and pest incidence. So, forecasting of yield along with disease pest incidence should be given top priority to save the crop from weather vagaries and increase the crop productivity.

Abstract

The major objective of this chapter is to examine how knowledge management initiative can bring competitive edge and help organizations to compete in a knowledge era. People now viewed as being the most valuable asset and ‘people management’ being a pertinent issue in knowledge management, the pivotal role of HR is being increasingly recognized by the organizations in a knowledge economy. The chapter starts with a discussion on the nature of knowledge management, theory, and process and then explores the role of human resource practices in facilitating the KM process in organizations. The author examines how different HRM practices like talent management, performance management, training and development, fostering trust, reward systems, institutionalizing learning systems and leadership can be linked with the knowledge management process to achieve competitive advantage.

In rural development, the sole aim is to transfer the technology for better living of people. The process by which the technology is transferred to users is called Transfer of Technology. Transfer of technology falls in the domain of adoption and diffusion. Therefore, it is necessary to understand adoption and its related issues. Adoption of sustainable agricultural practices is relatively difficult as people do not find newness in it. The transfer of technology is explained in terms of technology movement from place of generation to the hands of the users.

In the backdrop of a predominantly agrarian economy, India has made tremendous advances in modern agriculture to meet both the food and nutritional security. In recent years, horticulture has assumed great importance mainly to augment nutritional security and secondarily as a highly cost-effective, remunerative and eco-friendly enterprise having vast export potential. To meet the challenges of research and development, tracer techniques have added the much needed fillip as they can be ingeniously applied to resolve issues which are not ordinarily possible using conventional techniques.

Horticultural crops are ideal and valuable assets of nature to mankind. They are popular among masses since time immemorial but their importance was realized only in the recent past due to their high nutritive value, good taste and pleasing quality. They provide essential nutrients and minerals for proper functioning of human body and aesthetic surroundings for peaceful living. India is an important centre of diversity and several horticultural crops  originated here.  The horticultural crops constitute 13.08% of total crop area and contribute about 28% to GDP. The sub-continent extends from 8° 04’ - 37° 06’ North latitude and 68° 07’- 97° 25’ East longitude and it has tropical, sub-tropical and temperate climates which favour successful growing of a large number of horticultural crops.  India has a wide variety of climate and soil on which a large number of horticultural crops like fruits, vegetables, potato and other tropical tuber crops, ornamentals, medicinal and aromatic plants, plantation crops, spices, cashew and cocoa are grown. Of late, major emphasis was laid on development of high yielding varieties and high production technologies and their adoption in areas of assured irrigation paved the way towards food security.

Abstract

Scarcity of resources, economic deprivation, gender bias in wages, prevention from decision making and using income generated by farm activities has made life miserable and unjustifiably hard for rural women. The plight of rural women can be improved by dissemination of latest technologies in agriculture, creating small entrepreneurial outlets for agri-based products, networking of support services for women, development of new and adoption of drudgery reducing technologies, improvement in rural infrastructure to improve the life style and to promote entrepreneurial opportunities, better access to resources, organizing women’s co-operative movement, larger role in decision making, mandatory involvement of women in all agencies and organizations involved in rural development, feedback and follow up of women’s programmes and recognizing the success of rural women by government and its highlighting by media.

Carbohydrates are the most abundant biomolecules on earth. They occur in nature as glucose, starch and cellulose etc. Each year, photosynthesis converts more than 100 billion metric tonnes of carbon dioxide and water into starch, cellulose and other plant products. Carbohydrates are polyhydroxy aldehydes or ketones and their derivatives. They provide 4k calories energy per gram. They promote utilization of lipids and reduce wastage of proteins. They are readily available in roots, tubers, cereal grains, sugarcane and sugar beet.

Carbohydrates have the general formula C_n( H₂O)n, indicting that they are the hydrates of carbon. Some carbohydrates also contain nitrogen, phosphorous or sulfur. They are characterized by the number of carbon atoms they contain. If n=3, they are trioses, n=4 tetroses, n=5 pentoses, n=6 hexoses and n=7 heptoses. The most common sugars in plants are the hexoses. Two or more simple carbohydrates condense together to form polymer sugars like sucrose, starch and cellulose etc. The basic condensing bond is glycosidic bond.

Enzymes are organic catalysts produced by living organisms. They make possible biochemical reactions. Hence they are called biocatalysts. They are mostly a specialized class of proteins. However, there are some non-protein enzymes like ribozymes, which are RNAses. Enzymes speed up reactions at ambient temperatures. This is in contrast to chemical reactions like saponification of lipids which take place when lipids are boiled for a few hours with concentrated alkali.  Enzymes, namely, lipases, hydrolyze lipids at body temperatures in minutes. They are superior to chemical catalysts by a factor of 107 to 1014 .  An enzyme may be a simple protein or a complex protein. They are produced by cells and are mostly globular proteins. Each cell contains an estimated 3000 different enzymes.

Cyanobacteria have been identified as one of the most promising groups of organisms from which novel and biochemically active natural products are isolated. Cyanobacteria such as Microcystis, Anabaena, Nostoc and Oscillatoria produce a great variety of secondary metabolites. The only group comparable to cyanobacteria is actinomycetes, which has yielded a tremendous number of secondary metabolites. The rate of discovery from traditional microbial drug producer like actinomycetes, which is in the focus of pharmaceutical research for decades, is decreasing and it is the time to turn to cyanobacteria and exploit their potential. Recently, there has been an increasing interest in cyanobacteria as a potential source of new drugs (Glombitza and Koch, 1989; Schwartz et al., 1990). This is of paramount importance to fight increasingly resistant pathogens and newly emergent diseases (Hayashi et al., 1994).

Cyanobacteria are photosynthetic microorganisms that have flourished on earth for more than 3 billion years with some genera showing only minor morphological changes since that time (Hagmann and Juttner, 1996). The medicinal and nutrient qualities of cyanobacteria were first appreciated as early as 1500 BC, when Nostoc species were used to treat gout, fistula and several forms of cancer (Pietra, 1990; Bladon, 2002; Liu and Chen, 2003).