eChapters

Tomato (Solanum lycopersicum L.) is one of the most important vegetable crops cultivated in the world. It is used as raw in salads and also used as cooked vegetable in the preparation of curries. Processed items such as tomato puree, ketchup, pickle, chutney, whole peeled tomatoes and tomato powder are also consumed considerably. It is a rich source of Vitamins A & C. Lycopene and other flavonoids in tomato serve as good source of antioxidants. Tomato occupies 5 million hectares with a productivity of 34t/ha. in the world. In India it is cultivated in an area of 0.88 million hectares with productivity of 21 t/ha.

Micropropagation refers to the production of plants from very small plant parts, tissues or cells, grown aseptically in a test tube or containers under controlled nutritional, environmental and aseptic conditions. It is also called as in vitro propagation, which implies clonal, true-to-type propagation of plants by a variety of tissue and cell culture methods and is considered as the most efficient and commercial method of plant propagation. Tissue culture or in vitro culture is two broadly used terms for micropropagation, which basically include aseptic culture of various plant parts. Micropropagation was developed as the result of accidental findings of French Professor G. Morel in 1958, when he was attempting to obtain virus-free plants through meristem culture in dahlia and orchids. All the biological principles of micropropagation technique are based on the phenomenon of totipotency of cell, in which a cell of a plant has the capacity to regenerate in to a full-fledged plant having different organs. German plant physiologist, Haberlandt (1902) is known as the father of tissue culture technique, who for the first time coined the term totipotency.

Kamrakh or Carambola (Averrhoa carambola L.) known as ‘Star fruit’ is an important fruit of tropical and subtropical regions of the world. However, it is  a drought hardy plant and grow in dry land areas. Its fruit pulp is  sour-acidic in taste due to oxalic acid content.
 
Carambola are still in wild form or in homestead gardens and therefore, no improved and recognized varieties and /or systemic cultivation practices for this fruit has been developed so far. It is mainly grown as a fancy fruit in the garden and only limited plants are maintained. The plants prefers warm, moist climate but it can grow on any type of soil with good drainage system.

Synonyms : Bang’s disease, Contagious abortion, Infectious abortion, Enzootic abortion, Undulant fever, Malta fever, Mediterranean fever

Brucellosis, one of the most ancient diseases,  continues to be a problem for humans and animals throughout the world causing enormous economic losses and significant human morbidity in endemic areas. The bacterial pathogen is classified by the CDC as a category B pathogen that has the potential for development as a bioweapon. It is one of the important zoonotic disease and considered  as the most common laboratory acquired pathogen with >5 lakh human cases reported  annually  around the world. Brucellosis is a chronic infection which can result in infertility, delayed heat, interrupted lactation, loss of calves, wool, meat and milk production in animals and undulant fever in humans.

Examination of faecal sample for helminthic infections

Gross Examination: It precedes the microscopic examination of faecal sample and includes collection of information as below:
    a)    Consistency: Condition of the faeces should be noted as soft, watery (diarrhoeic) or hard but it should be kept in mind that the description varies with the concerned animal species.
    b)    Colour: It is to report the unusual faecal colour, if any as mud coloured foul  smelling faeces in calves indicate ascarid infection; tarry coloured faeces in dog is pinpointing of hookworm infection.

Introduction

The emerging functional foods market presents a considerable challenge to all manufacturers to keep abreast of the use of adequate packaging materials for their products. The interest in functional foods is intrinsically linked to the potential health benefits of their bioactive components. Preserving these bioactive components is, therefore, a crucial factor to providing the anticipated health benefits of functional foods. However, recurring failure in maintaining the quality of functional foods has been reported. Functional foods include a wide variety of products such as prebiotics and probiotics, dried foods (fibers, tea, herbs, etc.), fermented products (yogurts, kefirs, vegetables), and fresh fruits and vegetables. Their bioactive components (minerals, vitamins, fibers, peptides, proteins, w–3 polyunsaturated fats, antioxidants, enzymes, and symbiotics) range from very simple molecules to complex living organisms such as bacteria.

Introduction

The search for weight controlling foods began in the mid 19^th century when industrialization led to widespread obesity. Over the years, people have tried to lose weight by avoiding particular food groups like carbohydrates, eating specific foods such as cabbage soup, or adding a certain ingredient, like vinegar or grapefruit to each meal. Recently scientists have demonstrated that green tea, dairy products, and cinnamon have the potential to improve weight control by altering fat and/or carbohydrate metabolism at the sub-cellular level. Considerable research is needed, however, before these food items can be used to develop effective weight management products.

Zinnia is a very important summer annual belongs to family Compositae. Zinnia was named for the man who wrote the first scientific description of the flower, “Dr. Johann Gottfried Zinn” a German Professor of medicine, but it was the late 19th century that plant breeders started to pay any attention to this plant. Zinnia is a half hardy plant. They are popular for bedding however, cut flowers of zinnia remain fresh for several days. They are easy to grow from seeds. Collection of open pollinated seeds is in common practice in India. Non-uniformity of bloom with respect to colour, flower shape and size, height of the plants and excessive etiolation of the plants result into poor sale of zinnias.

Lotus belongs to the Nelumbonaceae family and the genus Nelumbo. There are two species in this genus; Nelumbo nucifera Gaertn. distributed in Asia and Oceania, and Nelumbo lutea distributed in North and South America (Qichao and Xingyan, 2005). Although, the species nucifera is the most important (commercially and culturally), it is critical to describe the American species, evaluate its horticultural value and its potential as a source of genetic diversity. The American species, represented by Nelumbo lutea (Syn. N. pentapetala or Nelumbium luteum) is known as American Lotus, Water-chinquapin and Yellow Lotus (Sayre, 2004) and is native to the eastern and central portions of the US ranging from Maine to Wisconsin and in the south from Florida to Texas. It is one of the most spectacular and graceful aquatics among all the native plants of India. N. indica are found all over India and extend as far as Kashmir to Kanyakumari exhibiting enormous thermoplasticity and phenotypic diversity with a large number of racial variants with different shapes, sizes and colours. First Indian fossilised record of N. nucifera has been reported from the Pleistocene epoch of Kashmir. The presence of Nelumbo in the Tertiary period of Assam is reported on the basis of impressions of leaves and rhizomes found in the collection from Eocene bed near Damalgiri. These records confirm the evidence in support of the view that N. nucifera is indigenous to India.

Abstract

Sabatayn basin is one of the two mature basins producing oil and gas in Yemen. Due to the recent decline in oil production, the exploration activities have been extensively concentrated mainly on these two basins (Sabatayn and Sayun-Masilah). So, this present study has been conducted to evaluate the exploration potential of the remaining trap areas within these mature basins. Fractured basement of reservoir becomes very attractive exploration target in Yemen recently, after the recent discoveries of basement fractured oil fields. As the evaluation of basement traps needs time and fund, to reduce the same, this research study uses a new technique which was devised with the help of Geoinformatics by analyzing the surface and subsurface lineaments effectively. In this study, a satellite image Enhanced Thematic Mapper (ETM+7) based analysis was conducted for extracting surface lineaments, and for the subsurface lineaments, the basement lineaments were extracted from seismic, magnetic and gravity data. An orientation analysis of these surface and subsurface linear features was performed to detect the basic structural grains of the study area. The correlation between these structural grains and subsurface oil and gas traps was performed to understand the connectivity to the reservoirs. This paper discusses in detail about the same and the importance of using surface and subsurface lineament analysis for delineating hydrocarbon reservoirs in the study area.

Abstract

The state of Tamil Nadu has a low easterly gradient slope and there are number of rivers, big and small originate from the west flow towards east south easterly and confluence the Bay of Bengal. These were grouped into seventeen major and minor river basins, the Cauvery being the largest basin and the river is also a near perennial river. These river basins receive rainfall both from the southwest and northeast monsoons. The state has over 40,000 surface water bodies and number of major dams and reservoirs. Even then, since the rainfall of the north east monsoon, the major source of water source to these basins, occurs in short span of few days with high rainfall, neither adequate storage is there to store them nor the recharge possibility is available, thus all leading to flooding and wastage. The 40,000 and odd water bodies are heavily silted and polluted too. The paper provides an over view of all these, basin wise, and in addition, strongly advocates intra state river linkage and improvised irrigation management as the best option to save the state from its water deficiency.

Abstract

The development index and the developmental planning of a Country/Nation mostly depend on its natural resources potential including water resources. The fast emerging Remote Sensing and GIS technology has substantially reduced the problems of water resources management including groundwater. The groundwater is distinctly controlled by western crystallines, central Tertiary sandstone and eastern Quaternary sediments in Pudukkottai district. While the groundwater behavior in crystallines is dominantly controlled by secondary porosity, in Tertiary formations and Quaternary sediments, it is controlled primarily by the primary porosity and by secondary porosities also if these are structurally deformed.

INTRODUCTION

Ethno-Veterinary Medicine (EVM) or Veterinary Anthropology refers to holistic and interdisciplinary study of traditional knowledge, skills, methods, practices and folk beliefs of the people about the health care of animal husbandry and production of livestock (McCorkle, 1986). It encompasses information on diseases and their control; remedies and clinical practices for treatment and prevention; management, feeding and breeding strategies; spiritual elements; and the use of human resources that hold the information and experience (Mathias, 2004).

INTRODUCTION

The fermented products probably came into existence at least before the British Era in Northeastern states of India [before 1824, The Yandabu Agreement between British Govt. and Burma (now Myanmar)] when the British first introduced salt in the region. Interestingly, in all the fermented fish products of this region no salt is used as ingredient which is a major difference with the other fish based fermented fish products of Southeast Asian countries such as Nuac-mum of Vietnam, Budu of Malaysia, Patis of the Philippines etc. Even after the British Era, people used to treat salt as a highly valued and scarce commodity and they used to take an alternative commodity, for example khar in Assam, made from banana plant or papaya. Hence, they could not afford spending salt in fish preservation and they were bound to preserve fish in their own cheaper and easier way.

INTRODUCTION

The origin of fish culture in India probably dates back to 2000 years. Possibly, fishery activity started when the human settlement moved away from the riverbanks to the hinterland. As the days went by, the Indian fish farmers practice their own indigenous technology as a common practice through natural resource management (National Commission on Agriculture, Gov. of India, 1976). The close and intimate observation of farmers through their age-old practices has developed the expertise of acquiring knowledge in aquatic ecosystem in particular. Admittedly, the multifarious knowledge and skill possessed by local people can substantially contribute to productive efforts and endeavors (Dasgupta, 1993).

A cell culture laboratory should allow the sterile handling of cultured cells with no or minimum level of contamination. The growth of bacteria and fungi is very high and no level of contamination can be allowed in animal cell culture. However, it is impractical to design a laboratory free from potentially contaminated microorganism. Further, it is possible to establish a laboratory with minimal risk of contamination. Several points should be taken into consideration while designing a new cell culture laboratory.

Halophytes are salt-resistant or salt-tolerant plants which thrive and complete their life cycles in terrestrial or aquatic habitats having high salt concentrations. Aronson (1989) compiled a partial list of halophytes containing 1560 species in 550 genera and 117 families. Menzel and Lieth (1999) listed as many as 2600 plants under salt tolerant flora. Although halophytes represent only 2% of terrestrial plant species, they are present in about half the higher plant families and represent a wide diversity of plant forms. Because of their diversity, halophytes are regarded as a rich source of potential new crops. Halophytes are tested as vegetables, fodder and oilseed crops under field trials. The oilseed halophyte, Salicornia bigelovii, yields 2 tones/ha of seed containing 28% oil and 31% protein, similar to soybean yield and seed quality.

Nowadays, revolutionary changes in entire globe have led to the economic, cultural and scientific development in our society and have augmented considerable changes in our food habits and life-style. Continuously growing population had noticeably increased the pressure on land, water and energy resources. All these resources are scarce and going to be exhausted in coming decades at the present rate of consumption. Undoubtedly, production of food is more imperative than the production of energy or any other bioproducts. Moreover, with the world population rising to 9 Billion in 2050, with many inspiring to a western life style and diet, this challenge should be addressed urgently (Draismaa et al., 2013). The challenge to produce about 70% more food by 2050 for a growing and increasingly affluent world population has motivated several review papers addressing the different dimensions of the food system and food security (Verburg et al., 2013). Presently, human beings consume approximately 2.5 billion tons of dry weight of harvested crops which include approximately 2.3 billion tons of cereals (e.g., rice, wheat, and corn kernels) and grass from managed pastures (Smil, 2000).

Wild edible plants have played an important role in human life since time immemorial. People depend on the wild plant resources for various purposes like fire wood, timber, non-timber forest products, medicines and food (Pushpangadan, 1995). In many cases, rural communities depend on wild edible plants, to meet their food needs in periods of food shortage. Indian subcontinent is blessed with varied and diverse soil and climate conditions suitable for the growth of various plant species. It has been estimated that 9000 of the 15,000 higher plants occurring in India are commercially useful. Of these 7500 are medicinal, 3900 are edible, 700 are culturally important, 525 are used for fiber, 400 are fodder, 300 for pesticides and insecticides, 300 for gum, resin and dye and 100 for incense and perfume (Anonymous, 1992-1993).

The palmyrah palm exists both in the wild as well as in cultivation, ranging from sea level about 800 amsl. It is usually grown in seasonal tropical or subtropical climates on sandy soils. It is a very adaptable palm, however, growing well in dry areas and is quite drought resistant. It also grows in per-humid areas and survives water logging quite well. The worldwide distribution of natural and cultivated populations of the palmyrah shows that it occupies a band on either side of the equator and extends laterally over a considerable girth. The country wise distribution of the palms are Mauritania, Senegal, Mali, Gambia, Guinea-Bissau, Guinea, Ivory Coast, Upper Volta, Nigeria, Gaban, Congo, Sudan, Tanzania, Madagascar, Saudi Arabia, Iraq, Iran, Pakistan, Bangladesh, Sri Lanka, Myanmar (Lubeigt, 1977), Thailand, Cambodia, Malaysia and Indonesia (Kovoor, 1983). In India, the palms are wide spread in Kerala, Tamil Nadu, Karnataka, Andhra Pradesh, Maharashtra, Odisha, Madhya Pradesh, Bihar and West Bengal.  Isolated patches are also seen in Assam, Gujarat and Uttar Pradesh (Anonymous, 1948). The palmyrah is considered as a slow grower and the growth rate decreases in regions of higher altitude (Tjitrosoepomo and Pudjoarinto, 1982).

Abstract

Climate change or elements of variability is a matter of great concern production positive, negative or natural impact on pest dynamics because of the specific nature of interactions of host, the pest and the environment. New pest such as Rice Whorl maggot, Flea beetal in rice/soybean and bark eating beetle in citrus are emerging with the change in climate pattern. Pest outbreaks in epemic form such as Rice hispa and rice ear cutting caterpillar are also noted. Location specific IPM packages with an emphasis on biological control are the need of the hour considering the threat of environmental pollution. The ecosystem diversification along with the study on natural enemies, spiders and coccinellids may be brought under purview.

Abstract

As such in search of alternative to chemical insecticides against insect pest of rice resulted in identifying white muscardine fungus, Beauveria bassiana an entomopathogen out of several entomogenous fungi prevalent in rice ecosystem as the potential mycoinsecticides. The fungus has 78-87% virulence against rice hispa with  LC 50 value of 90.16. Under field situations it is required that the effectiveness of the bioagents are enhanced by combining them with compatible pesticides. A sublethal dose of a pesticide  would make the insect physiologically weak which makes it much more susceptible to the attack of the entomogenous organisms. In view of this, compatibility test was conducted with 14 different commonly applied insecticides at two different doses i.e., recommended and half of the recommended dose. In small scale field trial chloropyriphos at half of the recommended dose along with B. bassiana was the best treatment in controlling the pest along with increased yield of the crop consecutively for two years.

Abstract

The disease is an output of the interaction among host, pathogen, and the environment over a period of time. Given that a susceptible host and an aggressive pathogen are available, weather determines the intensity of the disease over time. To capture the dynamics of the interactions among these biophysical variables, efforts have been made in the past to understand the variables per se and their interactions through modeling approaches.  The important weather parameters are temperature; rainfall/dew; leaf wetness period, wind, bright sunshine hours all of which are in turn influenced by soil properties. The important parameters of host that can influence disease development are susceptibility; growth stage and form; structure and density of the plant population and overall health. For pathogen, to cause disease, it should be present in the vicinity, pathogenic, adaptable with reproductive fitness and possess efficiency of survival and dispersal. 

Taiga (Boreal Forest) : The open northern part of the coniferous forest. Taiga also refers to sub-polar climate.
 
Tail Wind : The wind that assists the further movement of an object by blowing in the same direction in which the object is actually moving.
 
Tangent Arc : An arc of light tangent to a halo. It forms by refraction of light through ice crystals.
 
Tcu : An abbreviation sometimes used to denote a towering cumulus cloud (cumulus congestus).
 
Teleconnections : A linkage between weather changes occurring in widely separated regions of the world. 

The total area under pulses in Kerala during 2008-09 was 3943 ha with a production of 2982 tonnes. The average yield per hectare is 756 kg. Cowpea, greengram, black gram and red gram are the important pulse crops traditionally grown in Kerala. Nearly 75% of area under pulses cultivation is occupied by cowpea. The remaining 25 per cent of area under this group of crops in the State is shared mainly by greengram, black gram and red gram. Among these, red gram is mainly confined to the Palakkad district and the crop season extends over kharif and rabi together. The other pulses are cultivated in all the districts of the State. Bengal gram is totally imported and there is little scope for its development in Kerala.

Introduction
The major conditions described under this heading are as follows :
    1.    Snakebite 
    2.    Scorpion bite 
    3.    Black widow spider sting 
    4.    Toad poisoning

Snake Bite
Poisonous snakes mainly belong to three categories

A silo is an airtight to semi-airtight structure designed for the purpose of preservation and storage of high moisture feeds as silage.
 
Role of the silo in silage making

Silo has only three functions in the ensiling process:
    1.    To provide a solid surface to permit compaction of the mass to eliminate air;
    2.    To protect the ensiled materials from air and water during the storage period;
    3.    Where desired, to aid in the removal of silage by providing a base for unloading equipment.

Endotracheal intubation is the placement of a tube in the trachea to provide a patent airway.

It is a valuable technique that enables to attach an animal to a breathing circuit or, just as importantly, to secure an airway during an emergency such as respiratory or cardiac arrest.

It is important that time be taken to learn the anatomy of the laryngeal area and the skill of intubation so that intubation may be performed quickly and with little chance of misplacement.

These are the drugs that reversibly block the propagation of action potentials along nerve axons. General anesthesia may be advantageous where complete immobilization and relaxation of the patients required. However, local anesthetic techniques are advantageous for providing surgical anesthesia in animals that are considered at risk for inhalant or intravenous anesthesia. These drugs are injected directly at the target site.

Abstract

The Sonadi is an important breed of sheep in southern Rajasthan. Three districts namely Udaipur, Rajsamand and Chittorgarh were selected from major and Bhilwara from minor breeding tract for complete enumeration. Finally 450 shepherds were selected to collect the information with respect to demographical and geographical distribution as well as management practices. Among selected tehsils, two tehsils from each district were chosen for breed characterization. In all 6979 sheep from 147 shepherds of 49 villages in 8 tehsils were registered for breed characterization.

Abstract

The sires have been evaluated and ranked on the basis of solutions obtained through univariate and multivariate REML using animal model and BLUP value for sire effects under mode l 8. The data considered from 1214 animals descendent from 110 sires of chokla sheep maintained at CSWRI, Avikanagar, Rajasthan. The traits were considered birth weight, weaning weight, 6 months weight and first greasy fleece yield for the present study. Three solutions were used: Best linear unbiased Predication (BLUP1) values of Model 8, and univariate (BLUP₂) and multivariate (BLUP₃) solutions of REML animal models. Less than half of the sires were superior to the populations mean under BLUP₁ for the traits studied. The corresponding values were above 60% under BLUP₂, which was much higher than BLUP₁.

Since the linking of the abnormal chromosome constitution of 45, XO to the peculiar phenotype of Turner’s syndrome (Ford 1959), an increased interest in the association between abnormal chromosome constitution and some clinical syndromes was perceived worldwide. The advent of “banding” techniques in the late 1960s helped to refine the detection accuracy and provided for more and better information about cytogenetic make-up of cells and contributed significantly to the localisation of certain genes (McKusik 1992). This phenotypic-karyotypic correlation was done on the basis of visual deletions, insertions, and duplications etc. of DNA segments of various lengths. However, many instances are known in which, because of a parent carrying a balanced translocation, two or more offsprings suffer from a deficiency and/or excess of chromosomal material. Some familial chromosomal arrangements are beyond detection by our current cytogenetic methods, although remarkable results have been forthcoming with high resolution banding. Similarly, paracentric inversions in a parent may not be evident except when carefully studied with high resolution banding, but can give rise to a variety of abnormalities in children.

Historical Background: Mendelian Genetics
 
Gregor Mendel (1822-1884), the first geneticist, proposed his principles (Mendel’s laws of inheritance) addressing the question of ‘what is inherited and how?’ based on his experimental results with sweet pea. New scientific discoveries supported Mendel’s principles. The chromosome theory of inheritance was proposed based on the cytological observations that transmission patterns of chromosomes are closely associated with Mendel’s principles (Sutton 1903). T.H. Morgan (1866-1945) provided the empirical evidences of this theory using fruit fly, Drosophilla. He demonstrated that genes located close together on the same chromosome co-segregated in his experimental crosses (i.e. linkage), and could be mapped into linear linkage groups which corresponded to chromosomes (Morgan 1934). Thanks to Morgan’s contributions, the failure of independent assortment in Mendelian inheritance could be explained by linkage. In 1908, the equation describing the expected genotype distribution in a random mating population at equilibrium was derived by Hardy and Weinberg (Crow, 1999).

Mastitis is a disease of the mammary gland caused by pathogens that find their way into the lumen of the gland through the teat canal. Our efforts have been focused on developing mastitis resistant dairy cattle for a variety of reasons. Firstly, mastitis is a significant detriment to agricultural productivity. Mastitis is on every dairy farm and affects both the production and post harvest segments of the dairy industry. It is clearly a global disease. Secondly, the incidence of mastitis has not declined appreciably since the implementation of the extensive antibiotic therapy and culling of infected animals. Thirdly, considerable effort has been expended in developing vaccines that have not been as efficacious as hoped. Given these past efforts it is far from certain that a truly effective vaccine will ever be realized. Finally, because of the low heritability of mastitis resistance selective breeding has not been a useful tool for combating mastitis. Additionally, there is a strong desire to reduce the on-farm use of those antibiotics that are also used in human medicine, and certainly not least is a desire to improve the welfare of our dairy animals.

Abstract

Prolactin is a hormone secreted predominantly from anterior pituitary and imparts important roles related to development of mammary gland, reproductive behaviour and immune response. The objective of this study was to explore restriction fragment length polymorphism (RFLP) pattern of prolactin gene, to estimate gene and genotype frequencies of different restriction fragments and to study the effect of genotypes on milk production and reproduction traits in crossbred cattle Bos taurus x Bos indicus (Jersey x HF x Sahiwal).The present study investigated RFLP within 156bp amplification products of the bovine prolactin gene exon 3 in 30 crossbred cattles selected randomly from a herd using specific set of primers (Forward primer- 5’- CGA GTC CTT ATG AGC TTG ATT CTT -3’ and reverse primer- 5’- GCC TTC CAG AAG TCG TTT GTT TTC -3’). Restriction enzyme digestion with RsaI revealed three patterns in crossbred cattle, one having 156bp fragment (AA genotype), second having 156bp, 82bp and 74bp fragments (AB genotype) and third having 82bp and 74bp fragments (BB genotype) indicating genetic polymorphism. The gene and genotype frequencies in crossbred cattle were found to be 0.78 and 0.22 for A and B alleles and 0.70, 0.17 and 0.13 for AA, AB and BB genotypes, respectively.

Abstract

Human resource management (HRM) has experienced a strong evolution. It is necessary to evaluate the design and implementation of personnel policies in order to provide useful information to managers. The objective of HR Audit is to analyze and evaluate the HR policies and their level of fit with the firm’s strategy and the characteristics of human capital. A periodic and systematic audit is very important in order to check the effectiveness and proper implementation of various HR policies in the organization. This chapter will represent various sections where the HR audit can be carried out, what should be the task of auditors, what are the steps/processes that needs to be followed at the time of audit, and various tools for HR Audit and preparation of Audit Report to be used for future references. At the end of this chapter a case study has been presented in order to make the study more effective.

Introduction

Seed is regarded as carrier of new technologies. Therefore, the seed needs to be protected so as to deliver it as an efficient input. When seed is planted during an environmental stress like heat or drought chemical reactions in the seed may not go as smoothly as when the seed is under little or no stress. All the crops are liable to face varying degree of water stress and it is most crucial at the time of germination and plant establishment. Successful stand establishment under all conditions is the key to assured production. The early sown varieties of various crops faces the problem of heat stress at early vegetative stage. Moreover, due to global warming there is uncertainty regarding the physiological response of crops to enhanced atmospheric temperature. Any significant change in climate on a global scale directly affects crop production and then would impact local agriculture.

Introduction

In India ,the increasing demographic pressure with developmental activities are causing tremendous pressure in utilization of natural resources leading to various kinds of ecological problems and land degradation. The Govt. of India has for long considers watersheds as catalysts for development activities in rain-fed areas. Watershed, simple stated as a manageable hydrological unit. Watershed development approach calls for an integrated effort of many courts, viz, area development, resource identification and management programme- planning, implementation and evaluation and also the disciplines and functionary involved. An integrated approach in watershed management, the development of agricultural land alone is not the criteria, but the development of the entire area covering a watershed from highest point (ridgeline) to outlet of the Nalah or natural stream will have to be considered.  For scientific development of watershed area, all natural resources such as water, land, human, vegetation, livestock, wildlife etc. have to properly identified, quantified, and appropriately utilized.

The contribution of agro biodiversity to world agricultural production is immense. The world agricultural landscape is now dominated by few crops and varieties. This agricultural scenario is suicidal because the homogeneous plant population is vulnerable to biotic and abiotic stresses. The ecosystems rich in biodiversity possess greater resilience and hence able to recover more readily from biotic and abiotic stresses, such as drought, environmental degradation, pests, diseases, epidemics, etc. Hence, a decline in biological diversity puts the functioning of ecosystems at risk. The cultural value of biological diversity conservation and sustainable management for present and future generations is another important reason for conserving it for posterity. To tide over the precarious condition of food insecurity, rich crop germplasm must be sustainably managed to tap the potential of crop genetic resources. The sustainable management of agrobiodiversity is therefore very essential for developing adaptation strategies in the era of global climate change.

The major challenge of the present time in agriculture is implementing sustainable development and meeting the food needs of increasing population simultaneously. Agricultural extension always remains an integral part of National Agricultural Policy. At present, agricultural extension has a crucial role to play in the context of growing demands of agricultural production in a sustainable manner. In this situation extension’s traditional task of transferring and disseminating appropriate technologies and agronomic practices would not be sufficient. There is need to view extension for sustainable development in an institutional strengthening context, both in functional and structural.

Origin and Concept of SHGS
    
The origin of SHGs is from the brainchild of Grameen Bank of Bangladesh, which was founded by Mohammed Yunus.  SHGs were started and formed in 1975.  In India NABARD is initiated in 1986-87.  But the real effort was taken after 1991-92 from the linkage of SHGs with the banks.  A SHG is a small economically homogeneous affinity group of the rural poor voluntarily coming together to save small amount regularly, which are deposited in a common fund to meet members emergency needs and to provide collateral free loans decided by the group (Jha 2000).  They have been recognized as useful tool to help the poor and as an alternative mechanism to meet the urgent credit needs of poor through thrift (Rao 2002) SHG is a media for the development of saving habit among the women (Rajamohan 2003).  SHGs enhance the equality of status of women as participants, decision-makers and beneficiaries in the democratic, economic, social and cultural spheres of life.  (Jain 2003).

Temperature influences most plant processes, including photosynthesis, transpiration, respiration, germination, flowering, adaptation and distribution of crops. As temperature increases (up to a point), photosynthesis, transpiration, and respiration increase. When combined with day-length, temperature also affects the change from vegetative (leafy) to reproductive (flowering) growth. Depending on the situation and the specific plant, the effect of temperature can either speed up or slow down this transition.

Temperature is the measure of mean kinetic energy per molecule of the molecules in an object, while the heat is the measure of total kinetic energy of all the molecules of that object. A large object may  have a much lower temperature than a small object and may still have greater heat content by virtue of larger number of molecules in it. Thus heat and temperature are not the same.

The solar energy is the main source of energy for the processes occurring at the earth surface and in its atmosphere. Crop production, is in fact an exploitation of solar radiation and plants are the converters of solar energy into a useful form of energy which is biomass and sustain life providing food, fodder, fiber, fuel, fruits etc. Sun energy fulfills two essential needs of the plants i.e.  (i) light for photosynthesis including many other photo processes and functions of the plants, (ii) thermal conditions required for the normal physiological functions of the plant. Thus, the crop production and agriculture is basically dependent on quality and quantity of radiation.

Food irradiation involves exposure of food to short wave energy to achieve specific purposes like extension in shelf life, insect disinfestations and elimination of food-borne pathogens and parasites. Compared to heat or chemical treatment, irradiation is more effective and an appropriate technology to destroy food-borne pathogens without much loss to the quality of food. It offers a number of advantages to producers, processors, retailers and consumers. Irradiation is a cold process and can be used to pasteurize and sterilize foods without affecting freshness and texture of food. Unlike chemical fumigants, irradiation does not leave any harmful toxic residues in food and is more effective. It is efficient and can be used to treat prepacked commodities. The FAO estimates that about 25% of world’s total food production is lost due to insects, bacteria and rodents after harvesting. Use of radiation can play an important role in cutting these losses and reducing dependence on chemical pesticides. The food borne diseases claim millions of lives all over the world every year. Irradiation of food can reduce these incidences by destroying harmful microorganisms.

The term DNA sequencing refers to methods for determining the order of the nucleotide bases, adenine, guanine, thymine and cytosine, in a molecule of DNA. In molecular terms ,the definitive understanding of a DNA molecule comes from determining its nucleotide sequence.The function of a gene can be deduced from its nucleotide sequence,for example by comparing the sequences of genes with known functions.

The first DNA sequences were obtained by academic researchers, using laborious methods based on 2 – dimensional chromatography in the early 1970s.  Following the development of dye-based sequencing methods with automated analysis, DNA sequencing has become easier and orders of magnitude faster.  Knowledge of DNA sequences of genes and other parts of the genome of organisms have become indispensable for basic research studying biological processes, as well as in applied field like diagnostic or forensic research.  The advent of DNA sequencing has significantly accelerated biological research and discovery.

1. Classification of weeds based on life cycle (Ontogony)

(i) Annuals: Weeds that  complete their life cycle within a year or season are called annual weeds. They are associated with annual crops and propagated mainly through seeds. Annual weeds are subdivided according to the season of prevalence as follows:

(a) Kharif season  annuals or Kharif  weeds: The weeds that grow during the summer and complete their life cycle during Kharif or rainy season are called Kharif season annuals or Kharif weeds. The kharif weeds complete their life cycle during the warm wet season (i.e. from the month of June to September) and attain maturity with the onset of winter and finally dies.

During his recent visit, US President Barack Obama pointed out that India is fortunate to have a youthful population with over half the population of 1.2 billion being under the age of 30. Of the 600 million young people, over 60% live in villages. Most are literate. Gandhiji considered the migration of educated youngsters from villages to towns and cities as the most serious form of brain drain adversely affecting rural India’s development. He, therefore, stressed that we should take steps to end the divorce between intellect and labour in rural professions.

The National Commission on Farmers (2004-06) stressed the need for attracting and retaining educated youngsters in farming. The National Policy for Farmers placed before Parliament in November 2007 includes the following goal: “To introduce measures which can help to attract and retain youth in farming and processing of farm products for higher value addition, by making farming intellectually stimulating and economically rewarding”. We are currently deriving very little demographic dividend in agriculture. On the other hand, the pressure of population on land is increasing and the size of the average farm holding is dipping below one hectare. Farmers are getting trapped in debt and, as real estate rates continue to rise, the temptation to sell prime farmland for non-farm purposes is growing. Over 45% of farmers interviewed by the National Sample Survey Organisation want to quit farming.

Abstract

Four bread wheat varieties (PBW-138, PBW-299, PBW-343 and PBW-373), two of durum wheat (PDW-215 and PDW-233) and two of triticale (TL-419 and TL-1210) were milled to obtain 70 percent extraction flour.  The grains and the flour samples of all the varieties were evaluated for proximate composition, rheological properties and pretzel making. Physical properties of durum wheat were better followed by bread wheat and triticale. Durum wheat were harder, had higher grain weight than bread wheat and triticale.  Protein, ash, fat, total sugars and enzyme activity were higher in triticale flour than bread and durum wheat flours while durum flour had higher pigments (ppm, b-carotene). Bread wheat flour was intermediate between durum and triticale flours with respect to fineness. Rheological studies revealed triticale flour to be the weakest flour. Pretzels prepared by using optimized recipe and method revealed PBW-343 and PBW-373 best for pretzel making.

Abstract

The demand for the food for ever increasing population is always continuous, but the production is limited to specific seasons. Therefore the food grains have to be stored for sometimes. Grain is a living biological material and therefore storage structures should be suitably designed to protect them from the ravages of pests, rodents and micro-organisms. However, the storage losses account for a major portion which can be reduced to considerable extent if proper care is done. The faulty design, poor maintenance and limited knowledge of the farmers concerning storage technology have greatly added to the spoilage of the food grains during storage. Sometimes the foods if not properly stored may be edible but it may lose the essential vitamins and minerals, thus their nutritive value has been lost. There is a major requirement of a good storage structure. Various food grain storage structures (small and large scale) are described.

Abstract

Grains in present context are food grains. The PFA Act includes cereals, millets, and pulses in food grains. At times, seeds of certain oilseeds like soybean are also referred to in the discussion of food grains. Grains have been cultivated for thousands of years. We have Grain Standards as established by the International Organization for Standardization (ISO), which are considered as International Standards. Another source is Codex Alimentarius Commission (Codex) under the aegis of FAO (UN), which operates a Committee to formulate standards that are referred to as Codex Standards. Many countries have a National Standards Institution, which develops National Standards for their main grain crops and other commodities and issues specifications along with methods of testing and analysis. Several countries, which are in developing status, adopt or modify international standards into their national system. The Grain Standards have been evolved and established for a variety of purposes but primarily to grade produce in agricultural marketing largely to facilitate the movement of grain, provide both sellers and buyers with guidelines to support financial transactions, and ensure that the produce will meet up with end-use requirements, or, increasingly to protect the consumers.