eChapters

Summary

Bioenergy is the subject of increasing attention around the globe and represents an important issue in the present context. The rise of commodities prices, the negative impact on food security, and climate change represent different challenges to be overcome before the full potential of bioenergy can be realized. Bioenergy issues related to agriculture needs special attention for its development. Bioenergy development is always linked with rural economy. Farmers, having the choice to convert their food crops to fuels crops, naturally expect a high return from their farmland, thereby generating a scenario where food production gets depleted. The optimal production of bioenergy can be generated by using the wasteland present in different area. This way, food security for the future generation can be maintained along with optimal growth of bioenergy.

Abstract

A majority of the plants studied in natural ecosystems are symbiotic with microorganisms that either reside entirely (endophytes) or partially within plants. These microorganisms express different associations ranging from mutualism to parasitism. These symbiotic relationships appear to impart tolerance to various types of abiotic stresses such as heat, drought, salinity, heavy metals, etc. and sometimes may be responsible for the survival of both plant hosts and microbial symbionts in high stress habitats. The amelioration of the abiotic stresses by the endophytes assumes increasing significance in the light of rapidly changing global climate, which is likely to face frequent incidences of extreme weather conditions like high temperature, droughts, etc.

Abstract

Drought and salinity are two major abiotic stresses that affect various aspects of human lives of one third world population including human health and agricultural productivity. Abiotic stresses such as salinity, drought, nutrient deficiency or toxicity, and flooding limit crop productivity world-wide. A living organism is considered resistant if it tolerates a given physicochemical stress. The presence of microorganisms within the soil, specially a main group known as arbuscular mycorrhizal fungi (AMF), is a key factor in the adaptation of plants to the different ecosystems. The AMF colonizing within the plant roots can determine the success of plants in salt- and/or drought-affected areas. The symbiosis with AMF has been proposed as one of the mechanisms of salinity and water stress avoidance. Studies have shown greater drought and salinity tolerance in AMF-colonized plants by a number of mechanisms. These mechanisms include enhanced water and nutrient uptake directly by extraradical hyphae, higher leaf stomatal conductance and/or better root system architecture, higher capacity of osmotic adjustment and antioxidant defense systems, better soil structure due to higher glomalin and over expression of genes encoding antioxidant enzymes.

Abstract

Amongst various oilseed crops grown across the world, soybean (Glycine max L. Merrill) is globally important as a high source of protein and oil for human consumption and is also being used as potential feed for animals. Soybean is grown under rain-fed conditions in the tropics and subtropics in the marginal lands with less amount of external application of chemical fertilizers. The frequent climate variations have created a number of biotic and abiotic stresses, drought being a major abiotic stress which adversely affects the soybean productivity. Thus, to enhance the productivity of soybean, besides managing the nutrients, stress management is of utmost importance. There is a great opportunity of application of microbes especially arbuscular mycorrhizal fungi (AMF) where its application alone or in combination with plant growth promoting rhizobacteria (PGPR) can help in nutrient mobilization and remediation of plant stresses.

Bioinformatics is a new science conceptualizing biology in terms of molecules and then applying informatics techniques derived from disciplines such as computer science, maths and statistics to understand and organize the information associated with these molecules on a large scale (Gerstein and Jansen, 2000). It is often defined as the application of computational techniques to understand and organize the information associated with biological macromolecules (Luscombe et al., 2001). It represents a new field at the interface of the twentieth-century revolutions in molecular biology and computers (Pevsner, 2000)

Introduction

Fruits are important sources of vitamins, carbohydrates, fiber and sugar. A large variety of fruits are grown in India, of which mango, banana, citrus, guava, grape, pineapple and apple are the major ones. In India, grapes occupies fifth position amongst fruit crops with a production of 16.77 million tonnes from an area of 0.64 million ha (FAO, 2009). The total grape export from India during the year 2007-08 was 96,723 tonnes worth Rs 317.84 crores. (APEDA, 2009). Grape is an excellent source of many nutrients and phytochemicals, able to contribute to a healthy diet. Grapefruit is a good source of vitamin C and pectin fiber. The major varieties of grapes grown in India are Thomson seedless, Sonaka, Anab-e-Shahi, Perlette, Banglore blue, Pusa seedless, Beauty seedless etc. (NRCG, 2009). Red grapes are grown in large quantities, especially for wine and juice production. Grapes are used for making jam, juice, jelly, vinegar, wine, grape seed extracts, raisins, grape seed oil and some kinds of candy.

Mycorrhiza research is relatively recent. Although, it was in 1885 that A.B. Frank made reference for the first time to the term “Mycorrhiza”, it took him nine more years to establish the symbiotic relationship between the fungus and its host plant. It took a much longer time to convince the rest of the scientific community of the validity of Frank’s theory. Researches carried out between 1917 to 1950 confirmed that “Mycorrhizal colonization is a beneficial symbiosis between tree and fungus”. It is an unique partnership in nature, where the higher plants share their photosynthates with their fungal partners and provide them shelter, the fungal partners in return provide protection to the root system and assist it in performing its functions especially anchorage and absorption of nutrients / water from soil more efficiently.

The ectomycorrhizal fungi have been in use as a biological tool in improving the performance of forest trees since long. Better performance of forest trees is ensured by making them mycorrhizal, employing efficient strains of ectomycorrhizal fungi.

Soil Erosion As a Process
 
Soil erosion is a three stage process, namely (1) detachment, (2) transport, and (3) deposition of soil. Different energy source agents determine different types of erosion. There are four principal sources of energy: physical, such as wind and water, gravity, chemical reactions and anthropogenic, such as tillage. Soil erosion begins with detachment, which is caused by break down of aggregates by raindrop impact, sheering or drag force of water and wind. Detached particles are transported by flowing water (over-land flow and inter-flow) and wind, and deposited when the velocity of water or wind decreases by the effect of slope or ground cover. Processes like dispersion, compaction and crusting, accelerate the natural rate of soil erosion. These processes decrease structural stability, reduce soil strength, exacerbate erodibility and accentuate susceptibility to transport by overland flow, interflow, wind or gravity. These processes are accentuated by soil disturbance (by tillage, vehicular traffic), lack of ground cover (bare fallow, residue removal or burning) and harsh climate (high rainfall intensity and wind velocity).

Tropical tuber crops are an important group of subsistence crops in tropical and subtropical zones.  Carbohydrates synthesised and stored in the form of starch in underground tubers are used as food by millions in under-developed countries.  It is also used as raw material by many industries.  Cassava, sweet potato, Chinese potato, edible aroids like elephant foot yam, taro, tannia and yams like greater yam, lesser yam and white yam are major tuber crops  grown in India.

Tuber crops are mainly grown as rainfed with minimum cost of production.  All are propagated through vegetative means and require fertile and well drained loose soil for proper root development. All roots crops require high dose of potassium for high productivity.

Infection refers to the invasion of harmful microorganisms into the body and causing disease. The most important function of the immune system is to protect the body of the host against various viruses, bacteria, fungi and parasites. The grounds of immune surveillance stand on the basis of innate and specific immunity that build up against the evasive mechanisms of the disease causing organisms. Infectious disease is result of a complex interaction between  the host and the microbes. Evasions of protective immunity by the parasites critically determine the survival and pathogenicity of the microbes. The invasion of the body by harmful microorganisms is called infection. Infections are dangerous in any part of the body. Microorganisms spread vary easily into the blood stream and cause blood poisoning which is called septicemia.

Bones of the animal body makes a skeleton system and helps in locomotion and support soft tissues. The proportion of bones in animal body varies with the animal species as they contribute 12-28 percent in cattle and buffalo, 17-35 percent in sheep and lambs, 50percent in bobby calves, 25 percent in veal calves, 12-20 percent in pigs and 8-17 percent in poultry. As the age advances bones becomes rigid due to ossification of cartilages but in older age bones becomes brittle and fragile due to reduction in bone organic matter.

Abattoir is a structure meant to recover the edible portions of slaughtered animals for human consumption. These structures are used to cater the need of domestic purposes as well as some of them are utilized for export purposes. The demand of Indian meat and meat products is increasing day by day not only in our country but also around the globe. Therefore, millions (about 15 million cattle and buffalo and 1 million sheep and goat) of food animals are slaughtered every year to meet the current demand. Such large scale slaughter of food animals generates huge amount of wastes but due to lack of proper sanitary measures in majority of slaughter houses of our country their wastes not only deteriorate the hygiene of meat and meat products but also pose a potential threat to the environment. Therefore, it is an urgent need for safe and proper disposal of slaughter house and meat processing waste for food safety and human health. It is also important to protect the environment and to improve the quality and hygiene of meat and meat products.

1. Introduction

One of the most recent running questions of agricultural extension is the potential of rural areas to benefit from mobile communication. Actually, today the increase of the use of mobile phones (MP) is even more rapid in both urban and rural world.

The need for organic farming in India arises from the unsustainability of agriculture production and the damage caused to ecology through the conventional farming practices. The present system of agriculture which we call ‘conventional+’ and practiced the world over evolved in the western nations as a product of their socio-economic environment which promoted an over riding quest for accumulation of wealth. This method of farming adopted by other countries is inherently self destructive and unsustainable.

12.1 What is Climate Change?
 
The earth receives short-wave radiation from the sun, one-third of which is absorbed by the atmosphere, ocean, ice-land and living organisms. The energy absorbed from solar radiation is balanced, in the long-term, by the outgoing radiation from the earth and atmosphere. While short-wave radiation from the sun can easily pass through the atmosphere, the long-wave radiation emitted by the warm surface of the earth is partially absorbed by trace gases in the atmosphere called greenhouse gases’ (GHGs).

In plants, mineral uptake is the process in which minerals enter the cellular material, typically following the same pathway as water. The most normal entrance portal for mineral uptake is through plant roots. Some mineral ions diffuse in-between the cells. In contrast to water, some minerals are actively taken up by plant cells. Mineral nutrient concentration in roots may be 10,000 times more than in surrounding soil. During transport throughout a plant, minerals can exit xylem and enter cells that require them. Mineral ions cross plasma membranes by a chemiosmotic mechanism. Plants absorb minerals in ionic form: nitrate (NO₃^-), phosphate (HPO₄^-) and potassium ions (K+); all have difficulty crossing a charged plasma membrane. It has long been known plants expend energy to actively take up and concentrate mineral ions. Proton pump hydrolyzes ATP to transport H⁺ ions out of cell; this sets up an electrochemical gradient that causes positive ions to flow into cells. Negative ions are carried across the plasma membrane in conjunction with H⁺ ions as H⁺ ions diffuse down their concentration gradient.

Abstract

Dietary phytochemicals and herbal medicines are under intensive investigation for their potential as chemopreventive agents against various diseases due to the wide variety of microbial and plant functionally relevant secondary metabolites. The chemical diversity of phytochemicals, as well as phytochemicals and complex metabolic interactions between the biological systems may exceed the capacity of the platforms of traditional analysis, and therefore pose major challenges in the study of chemopreventive phytochemical compounds.

Abstract

Bacilli, a group of endospore forming bacteria present in soil, contribute directly or indirectly to crop productivity. Bacilli have many physiological unique traits like multilayered cell wall, stress resistant endospore formation, secretion of peptide antibiotics, peptide signal molecules, extracellular enzymes, which make them ubiquitous and assist to their survival under adverse environmental conditions for long time.

Abstract

Since the beginning of the civilization, medicinal plants have been used to prevent and treat various ailments. At present, most of the pharmaceutical/ nutraceutical industries highly depend on wild medicinal plants for the supply of raw materials for extraction of bioactive compounds. As medicinal plants receive increased scientific and commercial attention, there is increasing pressure on the wild medicinal plant populations.

Abstract

Nanotechnology is an emerging field that offers various potential applications in the areas of agriculture, health and medicine. Recent advances in the design and synthesis of nano-materials aids for developing sophisticated nano-devices for clinical research and practice. Applications of nano materials in medicine includes disease diagnosis, early prognosis, detection of pathogens, tumor detection, tissue engineering, target  specific drug delivery,  development of  biomaterials  for oral health  and understanding of cellular mechanisms in live cells using molecular imaging.

SYNOPSIS

Flavor is the sensory impression of a food or other substance, and is determined mainly by the chemical senses of taste and smell. The flavor of the food, as such, can be altered with natural or artificial flavorings which affect these senses. Smell is the main determinant of a food item’s flavor. While the taste of food is limited to sweet, sour, bitter, salty, umami (savory), pungent or piquant, and metallic – the seven basic tastes – the smells of a food are potentially limitless.

Abstract
 
Food products can have moisture content as high as 90% which needs to be lowered to acceptable limits to prevent microbial growth and deteriorative reactions. Drying is one of the most common and cost effective techniques for removal of excess moisture from the food by application of heat. In addition to its role of extending the product shelf life and providing stability, drying also helps to produce variety of products from agricultural, horticultural and industrial products. But to obtain the desired quality product, adequate drying is essential which depends on type of dryer and drying technique employed which further requires proper understanding of drying process. Despite being important unit operation in food processing industry, appropriate scientific knowledge of the drying process is still limited. So, the fundamental principles and associated terminologies with drying has been discussed in detail in this chapter to have thorough understanding of the drying process. In addition, different models and calculation procedures for drying of different types of commodities has also been reviewed.

Abstract

Recently, the reduction of post harvest food losses around the globe is a critical issue for ensuring future food security. Drying techniques is important option to prevent losses and preserve food for long time. The solar thermal energy required to remove moisture from the food during the drying process can be optimized by designing suitable solar dryers. Moreover, the application of solar energy in drying of agricultural products has tremendous potential, since it can easily provide the low temperature heating required for drying and helps in reduction of CO2 emissions. Hence, the present chapter deals with descriptions of different types of solar dryers used to dry various types of agricultural food products and design of solar dryers. Also, the heat and mass transfer parameters with respect to various process variables to estimate the performance of the food dryer system were analyzed. The advantages of solar dryers in terms of net CO2 emissions mitigation potential and the quality attributes of dried food products are also discussed. It is suggested that properly designed solar dryers having low operational cost compared to electrically heated dryers may prove to be an energy saving device for drying of agricultural products. However, the techno-economical and environmental aspects of various efficient solar dryers are needed to be further studied for applications in various irregular shaped food products.

Abstract
 
Drying is one of the most popular methods used for preserving products and extending their shelf lives by reducing moisture content to a low level to prevent microbial spoilage and moisture-mediated deteriorative reactions. As an efficient technology with high heat and mass transfer rates, impingement drying has been commonly used in various industrial drying such as tissue paper, textiles, photographic films, coated paper, nonwovens, carpets, lumber etc. In the past two decades, air impingement technology has got more and more attention in the field of food and agricultural products processing.

Abstract

Medicinal herbs are economically and nutritionally important plants, which are rich in health-promoting compounds. Herbs are the backbone of both the traditional Chinese and Indian medicine, which has long history as part of their culture. Ensuring the quality of herbs is a crucial step for integrating the traditional medicine into science-based modern medicine. Drying is an essential technique in preservation of herbs as it affects directly the quality attributes of the dried products, whereas many producers lose much profit due to poor drying techniques. So, employing a suitable drying technology and selection of appropriate drying conditions are very important for producing high quality herb products. The aim of this article is to summarize the advances in drying technologies of medicinal plants, describe the current status and identify future research opportunities. The current work provides more data and information for selecting optimum technology for herb drying and would trigger innovative drying technologies to enhance drying kinetics and quality of herb drying.

Abstract

Food proteins are among the commonly used ingredients by food manufacturers to produce different products with desired characteristics. Due to several nutritional and functional properties, proteins have different functions in various food products in addition to their role in metabolic system of the human body. Dilute or concentrated solutions of pure proteins or unprocessed food products which are rich in protein are very sensitive to deterioration or degradation by microorganisms and thus have short shelf life at ambient temperatures due to their highly moist structure and high protein content. Drying is one of the best methods that can guarantee preservation, a longer shelf life, chemical or thermal stabilization and resistance against other stresses. A full understanding of stresses encountered during drying is needed to choose an appropriate drying process and to optimize this process for maximum product quality. A number of methods have been used by various researchers to dry protein-containing foods. Among these methods, freeze drying and spray drying are the most common techniques. Sun drying, convective hot air drying, vacuum drying, heat pump drying, radio frequency drying as well as combined or hybrid drying methods with two or more of the drying methods have also been developed.

Tea (Camellia sinensis) is one of the most important beverage crops in the World and the second most commonly drank liquid on earth after water. It has numerous medicinal benefits mainly due to its antibacterial and antioxidant properties. The major tea growing regions of the world are South-East Asia (India and Sri Lanka), Eastern and South Africa consisting of Kenya, Malawi, Tanzania, Uganda and Mozambique. All these countries are producers of black tea. China and Japan are the major producers of green tea.

Coffee is grown at higher elevation across the Western Ghats between 750 and 1200 m amsl. It requires a certain degree of shade for its better performance. The annual rainfall over the coffee growing tracts varies between 1400 and 2600mm, having uni/bi-model rainfall with prolonged dryspell from November to May. It is more so over North of the Western Ghats. The mean annual maximum temperature varies between 24 and 30⁰C while the minimum between 15 and 18⁰C. The difference between maximum and minimum temperatures (temperature range) varies between 5 and 16⁰C across the coffee tract. The ‘Monsooned Malabar Coffee’ is a specialty coffee produced from the erstwhile ‘Malabar Region’. It undergoes certain changes in physical and biochemical characters when the coffee beans are processed during the summer monsoon (June to September). It is processed at Mangalore, located in Coastal Karnataka. The processing location experiences heavy rainfall of more than 1000 mm in July, followed by 950 mm in June and 600 mm in August. Out of 3264 mm of annual rainfall, 2852 mm is received during the monsoon period. It accounts more than 80 per cent of annual rainfall. The maximum temperature during the monsooning varies between 28 and 30°C while night temperature revolves between 22 and 24°C. Being located in the tropics along the West Coast, the crop processing environment in terms of surface air temperature is relatively uniform and moderate with a characteristic feature of heavy clouds and continuous rainfall during the monsoon period.

Introduction

Nitrogen (N) fertilization assured centre stage for enhancing food production in developing countries especially after the introduction of high yielding and fertilizer responsive crop varieties. Almost half of the human population relies on N fertilizer for food production (Ladha et al., 2005), and about 56 percent of the N fertilizer is used for producing rice, maize, and wheat (IFA, 2002). It has contributed an estimated 40% to the increase in per capita food production over the past 50 years (Smil, 2002). However, excess use of chemical N fertilizer may negatively affect surface water, as well as groundwater, and the atmosphere (through leaching and runoff) through volatilization of N (Galloway et al., 2008).

Coconut is a traditional plantation crop of India and assumes the status of a high value commercial crop. In India, most of the acreage under coconut palm (90%) lies in the four southern states i.e., Kerala, Tamil Nadu, Karnataka and Andhra Pradesh. Kerala ranks first in area (53.76%) and production (45%) followed by Tamil Nadu, Karnataka and Andhra Pradesh. Coconut is mostly a crop of small farmers in India, the average size of a holding being 0.22 ha. More than 90% of the five million coconut holdings in the country are less than one ha in size. The income derived from such small holdings is not sufficient to sustain even the small families.

ABSTRACT
 
The term rural development also represents improvement in quality of life of rural people in villages. As per Chambers (1983) “Rural Development is a strategy to enable a specific group of people, poor rural women and men, to gain for themselves and their children more of what they want and need.”  ICT is an integral part of development strategies of both developing and developed countries. It has great potential to bring in the desired social transformations by enhancing access to people, services, information and other technologies (Dutton et al., 2004). ICT applications can enhance poor people’s opportunities by improving their access to markets, health and education. Furthermore, ICT can empower the poor by expanding the use of government services and reduce risks by widening access to micro finance (Cecchini and Scott, 2003). The uses of ICT for development are actively promoted for economic development, job-creation, rural development and poverty-alleviation. The term ‘ICTs’ can be interpreted as including a wide range of media, ‘new ICTs’ is used to denote “the use of computers and communication systems between computers” (CTA 1999:4).

Abstract

Contamination groundwater and soil due to heavy metals (HMs) has aggravated into a threat not only for people inhabiting the polluted areas but also for the vegetation of the region. Relying on the use of obligate symbionts, arbuscular mycorrhizal fungi (AMF) in remediation of contaminated sites can be a productive approach. These fungi due to high cation exchange capacity have the ability to adsorb heavy metals (HMs) on fungal tissues; they also possess enzymes responsible for reduction of metals to less toxic forms. In areas with high toxicity of various HMs such as lead, AMF extends its extraradical mycelium (ERM) beyond the depletion zone of plant roots increasing the availability of nutrients such as potassium, phosphorus, magnesium, and sulphur resulting in increased plant growth and yield. Production of phenol and organic acids by the fungus have been reported to increase iron diffusion, that is a co-factor for antioxidant enzyme superoxide dismutase. AMF sequester HMs in fungal structures and bind them in their chitin cell walls preventing their translocation to aerial plant parts.

ABSTRACT

Microorganisms play a key role for the proper running of the ecosystem. They help in nitrogen fixation, which is unique and most necessary property found only in this group. They help in decompositions, mineralization, nutrient cycling, phosphate solubilization, soil aggregate formation, symbioses, parasitism and many other important works. A great emphasis has been given by many scientists to conserve the microbial diversity. Developing human civilization has a great negative impact not only on the above ground biodiversity but also on the belowground biodiversity. This article is an overview, what important and crucial role nitrogen fixers play for maintaining soil and plant health. Nitrogen fixer not only fixes atmospheric nitrogen but also produces growth promoting hormones which are very important for plant growth. 

ABSTRACT

The present paper describes application of synergistic action of microalgae viz., Spirulina platensis, Chlorella vulgaris, and Oscillatoria princeps coupled with state-of-the-art microbial biotechnology (that involved strains of Bacillus subtilis, Nitrobacter winogradskyi, Aspergillus flavus, and A. niger) developed by Biotechnology Resource Centre (BRC), Mumbai for treatment of secondary liquid effluents from a gelatine manufacturing industry. The growth of mixed cultures of selected microbial and algal species was measured respectively in terms of Colony Forming Units (CFUs) and Optical density (O.D.) of the culture. The results were indicative of efficient degradation potential of the proteinaceous liquid effluents. Moreover their BOD and COD loads reduced by 30.75 % and 84.10 % respectively after the treatment. Furthermore, the bio-safety of algal biomass cultured in selected effluents as feed supplement was tested on Swiss albino mice (Mus musculus). Mice in treated group didn’t exhibit any observable adverse effect on their growth or on their reproductive performance. In fine, the liquid effluents of gelatine manufacturing industries were polished along with production of probiotic food supplement.

Abstract

The ability of life to dwell in extreme environments on our mother planet earth right from a thirsty desert environment to highly water saturated oceans, gave the scientists a new area to work in during the 1990’s. The discovery of microbial life which had the ability to survive in conditions which were highly inhospitable for the normal life gave rise to a revolution in the field of science and technology. Extremophiles are one of the most primitive forms of life on earth since they have accustomed themselves to the present day harsh conditions compared to the normal environment. The last few years have seen a massive increase in their discovery, since the areas which once were thought barren by the scientists are now found inhabited by the microbial life. The extremophiles endure conditions right from extreme temperatures, pressure, salt concentration to radiations, metal tolerance, pH etc. During the past few years the industrial applications associated with the extremophiles and their products have led to their intensive exploration. Keeping in view the present and the future scenario, extensive efforts are still required in order to exploit the extreme environments for extremophiles and their products.

Abstract

Extensive occurrence of alkaline soils has been reported from the Indo-Gangetic plains of Northern India, which is commonly known as ‘usar’ or ‘reh’. High alkalinity and high exchangeable sodium percentage (ESP) of such soil render it inhospitable for normal crop production. Research efforts over the past few decades have resulted in evolving a number of practices for the reclamation and management of such soils. However, application of biological inputs in combination with some moderately salt tolerant plant species seems to be a better option. AM fungi is well known to enhance the ability of plants to cope with environmental stresses generally prevalent in the degraded ecosystems and stress conditions by providing a number of nutritional and non-nutritional benefits. Since isolates of AM fungi differ in their tolerance to adverse physical and chemical conditions in soil and are better adapted to their native stressed microhabitat, selection of appropriate native AMF isolate is necessary for any large scale reclamation program. Taxonomic diversity of AM fungi in the alkaline soils of Upper Gangetic plains of district Allahabad and adjoining areas has been investigated and it was found that such soils have a detrimental effect on the AM spore population, distribution and diversity. Maximum spore population occurred in winter and minimum in summer. Glomus followed by Acaulospora was the most dominant genus. Acaulospora scrobiculata and Glomus fasciculatum were the most frequent species followed by Glomus mosseae and Glomus aggregatum. Glomus fasciculatum was the most abundant species followed by Glomus mosseae and Acaulospora longula.

Abstract

Microorganisms that harbour in the root region are the most befitting candidates for use as biocontrol agents. The rhizosphere provides the frontline defense for root against attack by pathogens. Pathogens face a complicated phenomena of antagonism from roots. They also compete with each other for site of colonization on the root surface and plant nutrients. The ideal biocontrol agent introduces and /or promotes the antagonists only, whenever required and are most effective in minimizing the wasteful application of inoculum to non-targets. Many genera belonging to bacteria, fungi, actinomycetes and viruses are used as biocontrol agents to combat several important plant diseases. The present review focuses on the use of bacterial antagonists ,particularly rhizobacteria, as biocontrol agents of fungal diseases of plants , their mechanism of action, molecular and genetic basis of antagonistic property and possible genetic manipulations to bring about desirable changes. 

Abstract

The traditional forage production systems and grazing lands are under extreme pressure due to the population growth of both human and livestock, decreasing area and inputs. In the central India, especially the Bundelkhand region, the soil is highly weathered, degraded and have low inherent nutrient, which was further worsened due to use of chemical fertilizers and pesticides, for enhancing crop production to meet the escalating demand of the population.

Various systems were developed to take produce from field to consumer and selection of a particular method depends on several factors, including perishability and value of crop.  One method is to harvest the crop and take it to a packhouse for various unit operations like grading, cleaning, post-grading treatments, and packing for transport and marketing. When deciding upon where to locate a packinghouse, access to field and market point, adequate space for vehicles to enter and leave  packinghouse and ease of access to labor will all be considered.
 
In the simplest packinghouse, produce is delivered in picking containers, immediately after harvest, directly to packers.  Packers then sort, grade, size and pack the produce directly into appropriate transport containers. In this case, each worker must be aware of produce defects, grade and size requirements, and packing methods.

Storage is one of the most important aspects of post harvest handling of fruits and vegetables. The main objective of storage is to extend storage life of fruits and vegetables and increase their period of availability. A substantial quantity of fruits go waste in India due to lack of proper storage facilities. Storage of fruits and vegetables is practiced for various reasons. Proper post harvest handling of fresh horticultural produce helps in extending  period of availability of wide range of  fruits and vegetables round the year, prevention of seasonal market gluts, orderly marketing, better return to grower and  preservation of  nutritional qualities. The   long  term  storage  of  fruits  and  vegetables is expensive and requires high level of technical  knowledge of crop. However, an orderly marketing reduces storage period considerably. 

Minimally processed fruits and vegetables are products that have the attributes of convenience and fresh like quality. Their forms vary widely, depending on nature of unprocessed commodity and how it is normally consumed. In many cases, minimally processed product is raw and cells of tissues are alive, but these characteristics are  not regarded as essential. It is important that products have fresh-like character, regardless of   state of cells.  Minimally processed products for both retail and food service applications have increasingly appeared in market place recently.  In coming years, it is commonly perceived that this industry will have unprecedented growth.

Quality is an increasingly important factor in the production and marketing of biological products. Consumers are becoming more discerning as their affluence increases, and would be suppliers of products must meet these demands if they are to maintain or increase market share. The term ‘quality’ is one of the most defined terms in use in food industry today. Quality may be defined as ‘The totality of features and characteristics of a product that bear on its ability to satisfy a given need’. The first part, ‘The totality of features and characteristics of a product…..’ concerns objective factors related to the product.  The second part, ‘…… to satisfy a given need’, concerns subjective factors related to user or consumer of goods.

The shift from vegetative to reproductive phase in plants is the result of multiple gene cascades in response to photoperiodic and temperature dependent pathways, gibberellic acid pathway, vernalization pathway and autonomous pathway. The environmental cues are initially detected in the leaves and the mRNA of the flowering signal integrator FT gene, moving to the shoot apical meristem, acts as a long-distance signal for floral meristem identity. At SAM, FT-FD protein complex, based on signals from above said pathways in association with the signals from age-dependent and miRNA pathways, leads to the activation of master regulator gene of flowering AP1. The activation of genes involved in ABCDE model of floral organ differentiation, based on the directions of various cadastral genes lead to the development of floral organs. Thus, the sequential action of floral meristem identity genes, floral organ developmental genes, floral meristem size and organ number genes, floral organ pattern genes and cadastral genes leads to the flower development. This chapter sums up the gene interactions happening in leaf and SAM, leading to the development of a complete flower.

Endophytic Microorganisms

Endophytes (‘endo’, inside; ‘phyte’, plant) include microorganisms that thrive inside the plant tissues without any obvious adverse effects on the host, and they include mainly bacteria and fungi (Hallmann et al., 1997; Bacon et al., 2002; Hardoim, 2015). Endophytic microorganisms share an intimate association with the host adding essential and functional capabilities. Therefore, plant may be considered as a superorganism composed of an amalgam of both selected symbiont microbiota and host cells (Hardoim, 2015) with the new concept of holobiome, i.e., plant together with the associated microorganisms collectively governing the plant activities (Hardoim et al., 2015; Vandenkoornhuys et al., 2015).

Black pepper is popularly known as ‘King of spices’, it is the dried berry of the pepper vine, so important in the International Trade Market. The crop has its origin in the tropical rain forests of Western Ghats of India.  Kerala is the leading State in the production of black pepper with the ubiquitous presence of this crop in coconut, arecanut and coffee plantations. Chief pepper producing countries are Indonesia, Brazil, Malaysia, Cambodia, Sri Lanka and Vietnam.

The concept of Self Help Group (SHG) has its roots in rural areas and it has been mooted along the rural poor to improve their living conditions. Though it is applicable to both men and women in our country, but it has been more successful among women and they can start economic activities for improving their livelihoods through SHG movement. Self Help Group (SHG) is a small voluntary association. It is informal and homogenous group of not more than twenty members. SHGs consist of maximum 20 members because any group having more than 20 members has to be registered under Indian legal system. That is why, it is recommended to be informal to keep them away from bureaucracy, corruption, unnecessary administrative expenditure and profit motive. In fact, it is a home grown model for poverty reduction which simultaneously works to empower and shape the lives of its members in a better way. Groups are expected to be homogenous so that the members do not have conflicting interest and all the members can participate freely without any fear. SHG movement has triggered off a silent revolution in the rural credit delivery system in India. SHGs have proved as an effective medium for delivering credit to rural poor for their socio-economic empowerment. In the development paradigm, SHG and micro-finance has evolved as a need-based programme for empowerment and alleviation of poverty to the so far neglected target groups (women, poor, deprived, etc.).

Self Help Group (SHG) and micro finance may be said a recent movement and the literature on SHG and micro finance is relatively one of the youngest. Review of past works in the field of SHG and related issues since 1995 has been considered, which helps to identify the research gap. Therefore, studies related to SHGs were reviewed and presented covering various aspects comprehensively.
 
2.1 Profile of the SHG Members
 
Hemalatha (1995) conducted study in Haryana and found that majority of women taking up pottery activity were illiterate, Sirki making women’s education ranged from illiteracy to primary level and bakery unit were illiterate.

Besides edapho-climatic constraints in the arid region, availability of genuine planting materials at the doorsteps of the farmer’s is one of the major challenges that come in the way of horticultural development at commercial venture. Though, establishment of nursery is considered as remunerative farming enterprise if managed properly, in arid region it is still confined in the vicinity of big cities. It is also interesting to reveal that in the state like Rajasthan, most of the private nursery men are not producing planting materials in their nurseries except for the fruits like ber, lasoda and  kinnow instead they are purchasing planting materials from the other states in bulk and selling them on higher rate to the farmers of the state. The main reasons for poor development of nursery in the arid region are; unfavorable edapho-climatic conditions and poor knowledge about innovations made in recent past for nursery management. Keeping these facts in view, there is a need to develop a long chain of hitech-nurseries coupled with Human Resource Development for mass multiplication of quality planting materials for fulfilling the demand of end users. Production of quality planting material is directly link with productivity of fruit crops (Bose et al., 1998; Brison and Adriance, 2000).

Ber (Ziziphus mauritiana Lamk. ) is one of the ancient and common fruits of the country. It is a drought hardy fruit tree and can grow successfully even under harsh climatic conditions. Ber is well known for its ability to thrive under adverse conditions of salinity, drought and poor marginal soils. However, for good tree’s growth and yield, deep sandy loam soils with neutral or slightly alkaline reaction and good drainage are most suitable. It is grown throughout the country especially in arid and semi- arid parts. However, it is mainly grown in western parts of Rajasthan where rainfall is less and erratic (Pareek et al, 2002). In addition to Rajasthan state, it is cultivated in other states like U.P., Karnataka, Maharashtra, Tamil Nadu, A.P., Gujarat, M.P., Chhatisgarh, Haryana, Punjab and Bihar.

Introduction
 
Dairy ingredients are of significant importance in the formulation of many food products. Additionally, the incorporation of dairy ingredients, comprehensively recognized by the consumer as “natural” intensifies the odds of success of packaged foods and adds functional properties of the dairy ingredients in the targeted product. Dairy ingredients can be extracted from fluid milk in the form of cream, butter, condensed milk, dry milk, cheese, and whey products [1]. They provide beneficial functionality to foods, such as delivery of key nutrients, water management, fat-holding capacity, emulsification capability, viscosity creation, gel formation, and foam generation apart from providing desirable attributes of texture and flavour. Various ingredients and claims associated with dairy foods are shown in Table 3.1.