eChapters

Knowledge of male reproductive system and its physiological functions is essential for understanding male reproductive behavior and for effective reproductive management of breeding bulls. Therefore, personnel involved in management of breeding bulls, semen collection, handling and artificial insemination must have sound knowledge of male reproductive anatomy and physiology of breeding bulls. This section provides a recapitulation of the basic physiology and anatomy of male genitalia.
 

Functions of Male Genital System

    (a)    Primary function of the male genital system is to monitor reproduction by providing cutaneous and glandular system of male gonads

    (b)    Secondary function of male genital organs is to provide glandular, ductular, copulatory and auxillary system associated with male reproduction.

1.1. INTRODUCTION

In this chapter, we will know how to classify raw data. The purpose of classifying raw data is to bring order in them so that they can be statistically analysed easily. Classification of objects or things saves our valuable time and effort. It is done in a logical manner and similar things are arranged into a group or class.

Appendix A: Diagrammatic Presentation of Processes Involved in Obtaining an Indian Patent

6.1    Copyrights
    
6.2    Trademarks
    
6.3    Geographical Indications
    
6.4    Trade Secrets

5.1    TRIPS
    
5.2    WTO
    
5.3    WIPO
    
5.4    Paris Convention
    
5.5    Berne Convention
    
5.6    Budapest Treaty
    
5.7    Madrid Agreement Marks (MAM)
    
5.8    The Patent Law Treaty (PLT)

4.1    Provisional and Complete Specifications
    
4.2    Publication
    
4.3    Request of Examination
    
4.4    PCT Application: Gateway to Foreign Patents

3.1    Competitive and Collaborative Research
    
3.2    The Strategy to Protecting Plants : Plant Variety Protection Act
    
3.3    IPR Issues in Biotechnological Patents Haldi, Neem and Basmati Rice
    
3.4    Patent Litigation

2.1    Specification Drafting
    
2.2    Methods and Precautions in Drafting Patent Specification
    
2.3    Disclosure Requirements
    
2.4    Patent Claims
    
2.5    Filing of A Patent Application

1.1    General Introduction, History, Ownership of Tangible and Intellectual Property
    
1.2    Patentable Subject Matter
    
1.3    Basic Requirements of Patentability
    
1.4    Novelty, Public Domain, Obviousness and Non Obviousness
    
1.5    Inventive Step (Non-Obviousness) and Industrial Application

ABSTRACT
It is impossible to envision a world without energy provisions and has become inevitable and an integral part of a nation’s prosperity. It has unparallel contributions towards the socioeconomic empowerment, industrial growth, and technological advancements, as also in mitigating greenhouse gas (GHG) emissions. Judicious utilisation of energy sources without infringing upon the sustainable energy demand is the need of the hour. Taking India’s huge bovine strength into account, biogas technology has the potential to transform the standard of living of rural millions. Effectively implementing the Govt. of India’s National Biogas and Organic Manure Programme (NBOMP) could save precocious demand on electricity, fertiliser and firewood while promoting self-sustainable organic farming. In this chapter, the cost and benefit analyses of biogas technology (involving biogas plants of different capacities) are discussed along with the long-term approach at the grassroots level to promote digested slurry for organic farming. The commercialisation and carbon crediting of biodigester technology is also narrated. It is necessary to chalk out a revenue model to commercialise slurry at the grassroots level to economically empower the beneficiaries, from family-type to industrial-scale biogas plants. Small-scale biofertiliser hubs at district level may be organised to collect dry slurry from the beneficiaries and process them further to make it market-ready through entities operating at the national level developing manure for agricultural practices, as also feeding materials for animal husbandry practices.

ABSTRACT
The ‘steel-drum type’ biogas plant installation programme in Punjab was initiated in the early seventies, whose construction works were entrusted on the Department of Agriculture. Because of their high cost and high failure rates then, only the affluent farmers could afford to install. In the meantime, a cheaper Chinese model, also known as Janta type (dome-type replacing the drum-type) plant, became popular but was still out of the reach of ordinary farmers. With dual objectives of cost reduction and efficient biogas production to make it affordable to small farmers, a coordinated research was initiated. Detailed extension surveys were carried out in Ludhiana district which inferred that the farmers did not install the gas-holding steel drum though they purchased it. A significantly low cost Katcha-Pucca plant model of 15m3/d capacity was developed and installed in Sangrur district. Similar digester was tried for Janta model in which the inlet, outlet and dome (gas holder) were masonry works but the digester was a Katcha pit, the dome of the plant being modified to a semi-circular dome. More than 80 such plants are functional in a single village, and more than 40–50% of the plants installed in Punjab and Haryana are these PAU designs. The chapter deals in greater details on the design aspects and the extensive field works carried out to achieve these successes, along with some relevant facts and figures. The write-up is written as a commentary, rather than a typical chapter, for the benefit and interest to the readers.

ABSTRACT
Nisargruna biogas technology has been developed in BARC for processing different types of biodegradable waste. This technology is based on biphasic separation of aerobic and anaerobic stages. Introduction of aerobic predigester has increased the efficiency of the process in terms of enhancing the quality and quantity of methane and also reducing the retention time of the process. Process parameters of the plant were studied and found that the modified design has proved very effective in faster digestion of complex waste. The technology has been commercialised and has spread across different parts of country for processing variety of wastes including kitchen waste, municipal waste, agriculture waste, textile waste and poultry waste. Microbial population from different stages of the plant was also studied and found their ability to convert waste to biogas, containing mainly methane.

Keywords: biogas, biphasic digestion, green energy, methane, microbial fermentation, Nisargruna, waste management

ABSTRACT
The global energy demand is increasing day by day. Now-a-days, the supply of global energy is highly dependent on fossil fuels (viz., crude oil, lignite, hard coal, natural gas). But, on one hand the source of fossil fuel is decreasing at a rapid rate, and on the other hand the burning of fossil fuel is also degrading the environment due to huge Greenhouse Gas (GHG) emission (FAO/CMS, 2011). Hence, there is an urgent need of an alternate clean energy source that can sustain the future development undeterred while still protecting the environment. Biomass is considered as a sustainable source of clean energy that is useful in steam, fuel and chemicals production. It can be digested in controlled environment to produce biogas. The biogas is a clean, non-polluting and smoke-free fuel (Weiland, 2010) which can be used for applications that include cooking, space cooling/refrigeration, heating, electricity generation and gaseous fuel (CNG) for vehicles (Weiland, 2003). This paper analyses possible alternatives to process and utilise biogas for energy at industrial scale as a petroleum fuels replacement.

ABSTRACT
The rapid industrialisation and speedy progress towards urbanisation across the world have created the huge demand for energy moreover creating enormous quantity of wastes. The latter is in charge for polluting the environment in an exponential manner, resulting out of the harmful and poisonous compounds released by them. In recent years, there has been a pattern change from ‘waste-to-wealth’, considering the value of high organic fraction accessible in the wastes. The best-accomplished methods are that of anaerobic digestion; contribute to the production of methane (CH₄). Similar biotransformation has partial net energy harvests. Recently, fermentation industries steering their interest towards the production of value added products, viz., biohydrogen (H₂), biopolymers, ethanol, vitamins, acetic acid, enzymes, butanediols, etc. from carbon rich organic waste like cellulosic substrates have been envisioned to flourish in a multi-step process, such as the ‘Biorefinery’. A contemporary development in fermentation technology holds the key to overcome the constraints for such processes that may lead to a sustainable economy. One related technology is electrofermentation that has attracted significant attention recently owing to its capacity to boost the metabolic activities of microbes by means of extracellular electron transfer.

ABSTRACT
Biomethanation is the process of generating energy from anaerobic digestion (AD) of organic refuse. This helps reduce dependency on fossil fuels while reducing CO₂ emission. Organically-rich kitchen refuse (KR) generated daily from the households all over the world could be a good candidate to biogasify, though the quantity and quality of biogas depends on the KR proximate. To enhance biogasification, KR is subjected to physical, chemical and/or biological pretreatment. Physical pretreatments include chopping, grinding, ultrasonication and steam explosion, whereas chemical pretreatments could be by an alkali or a base. Biological treatment involves digestion of the organic matters by individual microbe or its consortium, although it takes place naturally. For biological treatment, standardising the substrate and inoculum ratio is essential. Candidate strains must be mutually compatible to formulate a microbial consortium. Bacillius seems to be a potential candidate as it is a facultative anaerobe exhibiting multiple essential enzyme activities (viz., amylase, cellulase and lipase). Maintaining an optimal pH of 7.0 and temperature of 37°C before and during anaerobic digestion is suggested. Other important factors in digestion include organic loading rate, retention time, C/N ratio, volatile fatty acids (VFA) concentration, etc. VFA content is vital as its accumulation during acidogenesis adversely affects the AD by dropping pH values to unfavourable levels. Acetogens convert VFA to acetate, CO₂ and H₂ in acetogenesis, finally converting it to CH4 in methanogenesis. For effective methanation,

ABSTRACT
The annual accumulating organic wastes generated through milling, brewing and various other agro-industrial and agri-processing activities in India amount to about 500 MMT. Most of these contain three major structural biopolymers, viz., cellulose, hemicellulose and lignin, a large proportion of which is carbohydrate and phenolic in nature. Massive accumulations of this kind of recalcitrant biomass not only deteriorate the environment, but also generate huge amount of potentially useful materials. Biological transformation has globally become increasingly popular among researchers and academicians in treating agricultural, industrial, organic and toxic wastes these days. About 60% by weight of the original pineapple fruit in forms of peeled skin, core, crown end, etc. resulting from the pineapple processing remains unutilised being discharged as waste, causing disposal and pollution owes. Of the 10% dry matter content of such waste, about 96% is organic and 4% is inorganic. Being rich in cellulose and hemicellulose, it can be a valuable resource for numerous value-added products by bioconverting it to valuable products, including bioenergy. Biomethane is one such energy resource that can be produced by valorizing pineapple wastes by employing various bioconversion technologies. This chapter focuses on the bioconverstion technologies to produce biomethane from pineapple wastes.

ABSTRACT
There is a quantum global growth in both number and size of dairy industries in recent times. These industries discharge thousands of liters of wastewater characterised by a heavy chemical oxygen demand (COD), biological oxygen demand (BOD), nutrients, inorganic salts, besides detergents and sanitisers each day (Kushwaha et al., 2011). High carbohydrates, fats and proteins contents in such waste streams originating from milk pose challenge to conventional municipal sewage treatment systems (Demirel et al., 2005). The easily biodegradable dairy effluent leads to precipitation of casein which is toxic and has a strong odour. Without adequate treatment, these effluents could pose serious threats to the receiving water bodies and disturb the ecosystem (Satpathy et al., 2017). For such heavily loaded organic effluents, biogasification through anaerobic digestion seems a promising strategy. This cost-effective energy generation process is also effective in environmental management compared to its other eco-friendly renewable source counterparts, such as, hydro, solar and wind (Satpathy, 2017). The Upflow Anaerobic Sludge Blanket (UASB) reactors are the most popular anaerobic systems to treat the fluctuating organic loads in dairy effluents. Anaerobic filter (AF), Upflow Anaerobic Filter (UPAF), Fixed-bed anaerobic reactor, Anaerobic Hybrid Reactor (AHR) etc. are few other systems that are demonstrably competent removing COD upto 90% and generating biogas. Successful anaerobic systems reported yielded (with upto about 85% CH₄ content) 0.32-0.34m3 CH₄/kg COD removed. Biomethanation process and reactors designs are constantly being optimised for effective treatment of the effluents while maximising the biogas production. The energy-rich gas thus obtained could further be utilised for heat and electricity at the domestic level, and also as a vehicular fuel. Residual digestate can also be used as organic manures (Angelidaki et al., 2007).

ABSTRACT
Rice straw is one of the most abundant lignocellulosic agricultural wastes in India and can be used as a major resource for biogas production. The structure of rice straw is complex and is made up mainly of cellulose, hemicelluloses and lignin. The lignin physically shields the cellulose and hemicelluloses, the main components which can be converted to energy, and hinders the access of microbial enzymes to these carbohydrate moieties. To overcome this making the straw a potential resource of biogas production, effective pretreatment is necessary that can efficiently hydrolyse the straw and make it accessible to cellulolytic enzymes and methanogens. Various pretreatment methods which are employed currently in the market are discussed here. For a process to be economically feasible it is necessary that the pretreatment be efficient as well as cost effective. To gain some insights into this aspect, the techno-commercial feasibility of Biomethanation of rice straw has been discussed.

ABSTRACT
Recent challenges for fossil fuels, associated environmental issues with disposal of organic garbage, and the rising costs for energy has encouraged researchers to search for alternate energy sources. Massive uncontrolled biogas from landfills, sludge and organic material degradation under anoxic conditions is an environmental management issue. Methane emission to atmosphere has a tremendous green house effect, but this can also be a valuable renewable energy resource. Biogas from kitchen wastes through anaerobic digestion by methanogens is such an alternate technology. Kitchen wastes are considered one of the best raw materials for biogasification. Biogas is mainly composed of 50-74% methane (CH₄), 25-28% carbon-di-oxide (CO₂), other volatile compounds including hydrogen sulphide (H₂S), water vapour and other trace gas compounds. The impurities in it, like Hydrogen sulphide (H₂S) which is corrosive, downgrade its quality. Purified biogas of higher calorific value attracts attention as a substitute fuel for additional applications. Its purification using various suitable scalable and economically-viable scrubbing technologies to enhance its quality and performance as an alternate fuel is an important step in this direction. Thus, a technology to generate and purify biogas from kitchen waste has significant prospects in the energy sector, and also as a promising enterprise to employ the youth.

ABSTRACT
Increased environmental pollution and high demand over supply for conventional fossil fuel sources have led to the exploration of other renewable energy sources. Out of the potential alternatives, methane has come up with a promising unconventional fuel source. Several technologies have been developed to establish methanation, including biomethanation, chemical methanation and gas-to-liquid technology. Several factors like process parameters, catalysts and reactors have been studied for process optimisation and making methane production commercially viable. Although methane as a greenhouse gas is a contributor to global warming, its combustion produces relatively ‘environment friendly’ gas CO₂, and H₂O. The released CO₂ is fixed into biomass by plant through photosynthesis process. Only rarely does methane combustion produces CO when combusted in an oxygen-limited condition. Thus, methane production and combustion are carbon neutral process. This chapter focuses on the application of methane as a source of alternate energy. Various technologies used, recent advances and challenges faced in methanation process are discussed.

ABSTRACT
Biomethanation comprises of four interdependent stages in series, hydrolysis, acidogenesis, acetogenesis and methanogenesis. Methanogenesis, the final stage of biomethanation, is accompanied with the reduction of substrates that include organic acids such as CH₃COOH, and others such as CO₂ and CH₃OH to CH₄ by methanogenic and methanotrophic archaea, usually under anaerobic conditions. Strictly anaerobic methanogenic archaea are found in the ruminant intestine, sewage digester, groundwater and deep soil/water etc. In methanogenesis, H₂ acts as the electron donor while substrates CO₂, CH₃OH and probably CoM-S-S-CoB (for CH₃COOH) act as terminal electron acceptors and reduce to methane, a process known as anaerobic respiration. This conversion is associated with the electrogenic proton motive force along with sodium motive force to drive the ATP synthesis by A0A1 ATP synthase, known as respiratory phosphorylation. The mechanism of conversion of methane from CO₂ by methanogens with cytochromes is same as those without cytochromes except that the reduction of heterodisulphide CoM-S-S-CoB is performed by the membrane-bound VhoACG-HdrDE complex for former while by cytoplasmic MvhADG–HdrABC complex for the later.

ABSTRACT
Methanogenesis is an important biogeochemical process takes place in anaerobic ecological sites. It is the last step of terminal electron accepting process of anaerobic respiration. Methanogens synthesise CH₄ using acetate and CO₂ as precursor molecules. Former types of methanogens are referred as acetoclastic methanogens and the later ones as hydrogenotrophic methanogens. After biogenesis of CH₄, it is emitted to atmosphere and causes global warming. In aerobic ecosystem CH₄ is oxidised by methanotrophs to CO₂ a less global warming molecule. However, in anoxic environment CH4 acts as an electron donor and interacts with various electron acceptors. Methane modulates denitrification, Fe reduction, SO₄ reduction and organic matter decomposition. Manuscript elucidates methanogenesis and highlights the pathways of interaction between methanogenesis and cycling of electron acceptors in various anaerobic ecosystems in relation to global C and N balance.

ABSTRACT
Methanogens are primarily anaerobic Archaebacteria representing the most primitive earthly creatures, alive since about 3.5 billion years. While oxygen inhibit their activity, they adapt well in a variety of ecological niche, viz., the intestinal tracts of insects and animals including ruminants, sewage digesters, groundwater and deep soil/water, etc. They are involved in biomethanation that converts organic polymers, including the complex recalcitrant lignocelluloses, to CH₄ and CO₂. Enhancing the process by optimising the physical, chemical and molecular parameters is an interesting biotechnology. Molecular research is rapidly progressing on the genomics, gene and its regulation, and methanogenesis as it expresses. Identifying novel species expressing methanogenesis and manipulating the genetic make-up including through cloning in recent years will set goals and leads for future investigations. The biomethanation enzyme Methyl-CoM-reductase (Mcr) constitutes about 10% of the methanogen protein. Due to its abundance and significance, elucidating its structure and its synthesis and regulation mechanism has received much attention recently. Mcr-coding genes from methanogens have been cloned and sequenced. An approach at the molecular level to enhance biomethanation seems to lie in metagenomics. The microbiology, biochemistry, the roles of the participating microbes, their molecular biology and applications in methanogenesis are discussed in this chapter.

ABSTRACT
Methanogenesis is a ubiquitous process primarily encountered in anaerobic environments. Methanogens are a group of diverse obligate anaerobic bacteria that produce methane from complex organic matter. Despite their differences in morphological characters and habitat, they show coherence in terms of methane-producing metabolic activity. Being distinctive from all other classical prokaryotes, these are grouped under another kingdom of Archea. Other distinctions of the members are based on their unique cell wall structures and membrane components, as well as differences in their highly conserved gene sequences. Methanogens likely owe their cosmopolitan status to their unique mode of energy metabolism of methane generation. They are active in various ecological niches, from rumens of animals to submarine volcanic vents, sewage digestors and landfills. Methanogenic bacteria are abundant in habitats where high affinity electron acceptors are negligible. Methane fermentation involves bacteria that obtain energy by catalysing anaerobically degradable organic matter to CH₄ and CO₂ by consuming H₂, CO₂, and low-carbon organic acids as their substrates. The gaseous products of methanogenesis are greenhouse gases, thus are major contributors to global warming. Methanogens could be used to produce renewable carbon-neutral energy substitute, biogas. Methane cycling archaea play a major role in global methane production as energy for the future.

A. General
        
B. Turf Grass
        
C. Indoor Plants

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

Accent : It is created in the garden to avoid the monotonous view. Mostly unusual objects like tall fountain, tree, statue etc are used to create the effect.

Acre: A unit of measurement of land area equivalent to 4000 sq.met or 0.4047 hectare.

Acrylic: It is a glassy thermoplastic that is incorporated in rigid plastic to enhance wither ability.

Aging: Refers to the processes acquiring maturity with the passage of time or normally an increment of time, which may or may not be accompanied by physiological changes including senescence. Aging thus includes a much ‘wider span’ of physiological processes, which may either “weaken the organism or to be neutral”.

Agmark: It is Agriculture Produce, Grading & Marketing Act, 1937 & voluntary in nature.

Anaerobic respiration: An incomplete oxidation of food to release partial energy takes place in the absence of atmospheric oxygen and occurs in cytoplasm.

Analytical chemistry: Deals with detection and estimation of elements and compounds.

A. General
        
B. Leaves and Floral Terminologies
        
C. Diversity in the Flower
        
D. Diversity in Fruits
        
E. Terminologies Related to Seed

Abstract: The Santhals of Orissa raise Teak (Tectona grandis) and Cashew nut(Anacardium occidentale) on their marginal and wastelands randomly to meet their contingencies. Upland is utilized for short duration upland paddy cultivation for food. The sporadically grown Teak and Cashew is used as insurance crops for meeting the high risk of dry land paddy. This work is unique and innovative as it was carried out in participatory mode on the pooled land from 14 Santhal households.  It is a maiden attempt in Orissa to develop Agroforestry models using forestry (teak) and horticulture (cashewnut) interventions into the paddy cultivation on uplands by Santhals without much alteration in their age old traditional agricultural practice. The basic objective of this research is to develop most profitable Agroforestry system(s) to provide best land use option for the risk prone dry land paddy cultivation to improve the farmers’ economy with simultaneous natural resource conservation.
 
The Agroforestry models Silvi-horticulture (Teak and Cashewnut)  Agri-silviculture (Paddy and Teak), Agri-horticulture (Paddy and Cashewnut) and Agri-silvi-horticulture (Teak, Cashew nut and Paddy) were developed by the Santhal tribe in Mayurbhanj District of Orissa. The inputs and planting material were sponsored by a leading NGO- Gamin Vikas Trust, which is working on poverty alleviation through Natural Resource Management of the State.

Introduction

Bamboos are group of woody perennial evergreen plants in the true grass family Poaceae, subfamily Bambusoideae, tribe Bambuseae. Bamboos are the fastest growing woody plants (up to 60 centimeter/day) in the world. Bamboo cultivation, especially in intensively managed and productive plantation has attracted a great interest in recent years leading to huge demand of good quality planting material. The easiest and most common method for propagation is seeds. However, in bamboo due to a long flowering cycles, seeds are not available every year and being a cross-pollinating species seedling population show much variability in characters. Species like Bambusa vulgaris and Bambusa balcooa flowers rarely and do not produce seeds making propagation absolutely dependent on vegetative means. Vegetative propagation offers a tremendous scope for mass multiplication of many commercially important species. Bamboos are vegetatively propagated through clump divisions, rhizomes, offsets, layering, marcotting, culm cutting, branch cutting, macroproliferation and through in vitro techniques. Propagation through clump divisions, rhizomes and offsets yield limited number of plants. Layering and marcotting techniques are not fit for commercial production. In vitro methods offer great scope for mass multiplication, but require high initial cost and skilled manpower and thus are not viable for decentralized forest nurseries.

Introduction
 
Historically, foresters did not view trees as typical plants having the systems of heredity similar to all other living organisms. Previously it was felt that the tree development depended only upon the environment in which it was grown. Recently, the “forest tree parentage” in the tree improvement programme has gained importance.  Although there are several breeding methods for improvement of any crop, the most commonly used breeding method in tree improvement is “selection” of superior trees from existing or established population. The objective of selection programme is to obtain significant amount of genetic gain as quickly and inexpensively as possible, while at the same time maintaining a broad genetic base to ensure the future genetic general principle; that is choosing the most desirable individuals for the use as parent in breeding and production programmes.

The most successful tree improvement programmes are those in which proper vegetative propagules and provenances are used. Success in the establishment and productivity of forest plantations is determined largely by the species used and the source of seed or vegetative propagules used within the population.

Abstract: This article gives an overview of the possibility and scope of successful cultivation of medicinal and aromatic herbs as intercrops with multipurpose tree species under agroforestry conditions. The challenges are many. Sustainable production under any agroforestry system is the main goal to be achieved through short and long term strategies. Diversification of the existing conventional cropping sequences coupled with developing of suitable technology packages is the need of the hour to cope up with ever increasing demand for diversified products. The hypothesis is, if intercropping of annuals, biennials and perennial medicinal plants in association with fuel, fodder, timber, pulp, fruit trees including tree species with medicinal values on the farmland, an alternate land use system; can provide economically viable option for sustainable systems. This chapter describes the potential and benefits of medicinal plants based agroforestry. Our experience is that planting timber, fuel and fodder or fruit tree species in combination with medicinal crops paves the way for diversified products and better economic returns to the farmers. Multipurpose tree species outside the forest have played very important role in catering to the day to day requirements of the rural population. Different farming systems consisting of crops + trees have yielded encouraging results and have not only helped diversification but enhanced productivity of land per unit area. Intercropping medicinal and aromatic herb species further makes agroforestry more remunerative.

Introduction

Dry lands cover nearly one-third of the earth’s total surface and characterized by high climatic variability in rainfall and temperature along with higher potential of wind and water erosion (Mainguet, 1991; Okin, 2000). Wind erosion has been identified as one of the overriding factors of desertification in regions characterized by strong and persistent winds through out an annual dry season (Le Houerou, 1996). Clear sweep of strong winds across sandy desert is the great hindrance in sustenance and progress of agricultural activities. The strong blowing winds on one hands takes away top fertile soil thus causing irreparable loss to soil productivity, on the other hand deposition of airborne soil particles (sand, silt and clay) block the roads, railways, water bodies, open canals and burry agricultural fields (Gupta and Aggrawal,1978; Prasad et al, 2004). To minimize erosion hazards of speedy winds and optimize production of agricultural crops, various efforts have been made in the past by adopting different soil conservation measures among which the windbreak/ shelterbelt plantations rank high due to their expected effects on wind velocity, microclimate and productivity. 

Introduction

India has about 18% of the human and 15% of the livestock population of the world that needs to be supported from only 2% of the earth’s land area. The per capita land availability has declined from 0.89 ha in 1951 to 0.37 ha in 1991 and is likely to be 0.20 ha by 2035 (Singh, 2005). It is estimated that demand for green and dry fodder would be short by 64 and 24% by 2020, while it was short by 62 and 22% in 2005. The current sustainable production of firewood is 17 million tons from forest areas and 98 million tons from non-forest areas, leaving a net deficit of 86 million tons which is removed illicitly from forest and scrub formations all over the country. Nearly 32.67% of India’s geographical area is affected by various forms of soil erosion and land degradation. The area reported to be degraded in India varies widely, ranging from 63.9 million ha (Anonymous, 2000) to 187.70 million ha (Sehgal and Abrol, 1994), due to variations in approaches used to define degraded lands. The area under wastelands is estimated to occupy 63.85 million ha which is 20% of the country’s geographical area.

Abstract: The continouning decline in the availability of cultivable land, rising energy and land casts together with the mounting demand for fruits, fodder and timber have given thrust to the concept of agroforestry plantation in Madhya Pradesh. It is a very intensive form of cropping, which has high relevance to the food and nutritional security of our ever-increasing population. Modern cropping systems differ in many ways from the traditional systems. They require more capital to establish and must be more precocious and productive to be profitable. Agroforestry based land use development in Madhya Pradesh will claim sustainability, increased agricultural productivity besides fruit fuel-timber productivity and also helping small scale farmers by generating employment and income. Therefore, the utilization of wastelands has paramount importance and agroforestry is one of the landuse options.

Abstract: This chapter reports variations in organic C, total N and P, mineral N and P, and exchangeable K, Ca and Mg, and microbial biomass C in soils in relation to leaf litter and root biomass (0 to 10, 10 to 20 and 20 to 30cm) at two canopy positions viz. under canopy and between canopy of homegarden trees i.e. coconut palm (Cocos nucifera L.), and clove (Eugenia cariophyllata Thunb) and nutmeg (Myristica fragrans Houtt. Nees) spice trees. It also deals with seasonal variations in pool sizes of mineral N (NH4+-N and NO₃--N), and net N mineralization rate (0-15 cm) in relation to rainfall and temperature under the homegarden trees, and examines how high rainfall (incessant rainfall) influences water filled pore space (WFPS), net nitrification and net ammonification rates, pool sizes of NH4+-N and NO₃--N and microbial biomass C in the soils and conserves nutrients in humid tropical climate. The chapter also describes how high rainfall makes phosphorus available in high regime of iron in the soils; and perennial cover crop like Pueraria separately and together with phosphorus increases soil N mineralization. Organic C, total N, total P, exchangeable NH₄+, NO_3- , exchangeable K, Ca and Mg are higher in the under canopy and between canopy positions of all the homegarden trees than that in open. Rate of mineralization is the highest during the post-wet season and the lowest during the dry season (February to April) under all homegarden trees. High rainfall during the wet season, however, reduces the rate of nitrification under all the trees.

Abstract: North East India has a fragile inaccessible terrain with a sloping topography wherein agroforestry being diversified in nature, has the capability to eliminate the ill effects of land degradation through intensification in land use. Shifting cultivation widely practiced by the aboriginals is mainly instrumental in carrying out deforestation as well as land degradation but many indigenous  land use systems present in practice since time immemorial are proven considering an approach to achieve eco-sustainability. A number of agroforestry systems such as  agrihortisilviculture, multistoried  homegradens, silvipastoral and agroaquaculture etc are dominantly present in the region.The information on soil fertility improvement by agroforestry systems is documented herein. Organic matter build-up was appreciably high in soils of agroforestry. Similar to soils under shifting cultivation, a low humification of soil humus was noted in soils of uplands without any forest cover but a reverse trend leading to high rate of humification could be initiated in soils under agroforestry systems. Moreover, decline in soil acidity, rise in water holding capacity and augmentation in nutrient  availability were noted in soils under agroforestry systems.

Abstract: This chapter reports soil and nutrient loss due to water erosion from five major land uses, i.e. vegetable fields, coconut plantation, arecanut plantation, home garden and moist evergreen forest on the undulating topography of the island. Soil loss under the land uses was quantified using replicated runoff plots. Vegetative methods, i e Gliricidia hedgerow + crop, hedgerow + mulch + crop, hedgerow + mulch + crop + grass barrier, for vegetable field under till conditions, and Pueraria cover crop (coconut + Pueraria phaseoloides  cover crop) for coconut plantation were tested to know their potential to arrest soil erosion in the respective system. Soil loss from the vegetable field under No till conditions, coconut plantation, arecanut plantation, home garden and forest was 3.8, 12.4, 10.6, 8.4 and 2.3 tonnes/ha, respectively. Soil working in vegetable fields (till + crop treatment) provoked soil loss to124 tonnes / ha. Erodibility was the lowest (0.06) in the forest and highest (0.26) in the vegetable field under till condition.  Among the nutrients, the highest loss, across the treatments, occurred for nitrogen and lowest for phosphorus. The hedgerow alone in vegetable fields reduced the soil loss substantially (66 %). However, it together with mulch and grass barrier reduced the soil loss nearly equal to that found in the forest. Like wise, Pueraria cover crop (19 years old) brought down the soil loss under the coconut plantation equal to that in the forest. These observations suggest that Gliricidia hedgerows for vegetable cultivation and cover crop for coconut plantation may be good vegetative methods for soil erosion control in the island.

Abstract: Agroforestry, is a sustainable land use system being practiced since long time through out the country. A diverse climatic, edaphic, and environmental conditions prevailing in the country has made it possible to practice different kinds of agroforestry systems. Karnataka state has four major agro-ecological regions and coffee agroforests are prevalent in the region of Western Ghats of Karnataka, which has tropical climate. With in Karnataka, Kodagu district has highest area under coffee agroforests with a total area of 1,00,079 hectares and is the largest producer of coffee in the country. The area under coffee agroforests is increasing at the cost of natural forested landscapes, which is considered as a looming threat to biological diversity. But, at the same time there are arguments that these coffee agroforests also supports high level of biological diversity. There are very few studies to justify this argument. With this background the present study is an attempt to enumerate the biological diversity of coffee based agroforests of Kodagu.

Agroforestry systems essentially involve a perennial component and provide cover to the soil through litter fall and tree canopy, which contribute to the conservation of soil and water resources in arid and semi-arid areas. Moreover, arid and semi-arid areas are exposed to extensive soil erosion by wind and water, respectively.  Planting of trees on erosion control structures as windbreaks, boundary plantations and tree-based systems are some of the potential ways for conserving natural resources (Singh, 2003).  Agroforestry and soil conservation have major role to play in the context of global climate change likely to occur from extremes of weather events and erratic rainfall behaviour.
 
    •    Provide  permanent vegetative cover to the soil or land surface and thus substantially control erosion caused by both runoff and wind.

    •    Improve soil quality through increased soil organic matter addition from litter fall and root turnover; and  improved  environment for soil microbe and earthworm activity. 

Abstract: Trees are known to reduce growth and yield of crops under their canopy in agroforestry systems through competitive interaction. This chapter describes the mechanism of competitive interaction between Linseed (Linum usitatissimum L.) and Leucaena leucocephala (Lam) De Wit in an alley cropping system. To know the mechanism of competitive interaction in agroforestry, three competition situations are created: crop + Leucaena shrub neighbour, crop + L. hedge neighbour and sole crop. In this study competitive interaction is studied in an alley cropping system having two alley width sizes i.e. 4m and 8m. Sunlight at ground, soil organic C and total N are measured in all the competition treatments at different distances from shrub and hedge neighbors. Sunlight is not reduced in crop + hedge treatment like that in sole crop treatment. Sunlight is reduced in crop + shrub treatment (36 to 82%), being the highest in 4m alley and the lowest in 8m alley size. Soil organic C is high but total N is low in crop + hedge and crop + shrub neighbour than in sole crop treatment. Comparing the two competitive treatments (crop + hedge and crop + shrub neighbour) it is observed that growth rate (42 to 55%) and crop yield (71 to 72%) are reduced greater due to aboveground than belowground competition. Belowground competition is 3.6 times greater in 4m than in 8m alley, suggesting that spacing is an important factor, which regulates tree/crop competition so does the crop yield reduction in an agroforestry system.

Abstract: Alley cropping system is known for several services like fodder and fuel production, nutrient management, and soil erosion control from hilly terrain in humid tropics, but it could not make in farmers field. This study explores the role of Gliricidia leaf manure on nitrogen management in soils. Simultaneously, the system is modified to make it highly profitable, so that it may become farmer’s friendly in humid tropics. For nitrogen management in soil, two methods (leaves being incorporated into soil vs. surface) and three times of application, i.e. zero week after sowing (0 WAS), two week after sowing (2 WAS) and four week after sowing (4 WAS), of Gliricidia leaf in soil was considered. Two additional treatments, urea (120 kg ha-1, equal to the leaves) and control (no urea + no leaves) are also maintained to compute recovery of nitrogen from the leaves by the crop, and to know if the leaf manure could produce grain yield equal to that of equivalent urea. The study reveals there is no effect of the method of application on the decomposition and release of nitrogen from the leaves, soil N mineralization, nitrogen uptake, shoot biomass and yield of the crop, but time of application affects these parameters significantly. Maximum 50 % nitrogen is released quickly from the leaves within 15 days and remaining 48-49 % gradually in 60 days. Rate of soil N mineralization; nitrogen uptake, shoot biomass and grain yield in maize are the highest in 2 WAS and lowest in 4 WAS treatment. Recovery of nitrogen from the leaves is very low ranging from 4.5 to 9.3 kg ha-1. The leaves do not produce yield in maize equal to that of equivalent urea. However, for synchronization of maximum release of N from Gliricidia leaves and it’s 

Abstract: Stall feeding to cattle is not practiced in the Andaman Islands since generations. In the morning, after milking, cattle are allowed to go for free range grazing in the nearby forest or coconut arecanut orchards. But, like mainland territory the cattle do not form herd. They are trained in such a way that come back home during evening where they are fed with concentrate before the milking. Coconut and arecanut orchards occupying more than 14000 ha land are second major land use after forest in the Islands. The forage production in the grazing lands are not sufficient to meet out the demand of huge livestock population particularly during the lean period, form January to April. An attempt has been made to know the effect of four N fertilizer levels (0, 60, 80 and 120 kg ha-1 N) on net soil N mineralization rate (NMR) and soil moisture (SM), and shoot biomass (SB), FP, shoot biomass/root biomass ratio (SB/RB), N concentration in SB, N uptake and nitrogen use efficiency (NUE) of three grasses [Guinea (Panicum maximum Jacq.), Para (Brachiaria mutica (Forssk) Stapf) and Hybrid-napier (Pennisetum purpureum Schumach.)] under three canopy positions [under canopy (UC, representing high shade), between canopy (BC, representing low shade) and open] of coconut trees (Cocos nucifera L.) in a coconut based silvopastoral system in the Island conditions. The study has revealed that the tree reduces light 59% under UC and 32 % under BC positions, but the N fertilizer levels increase NMR by 11 to 51 % under UC and 3 to 44 % under BC positions compared to the open. SM does not differ across the canopy positions

Abstract: The Trans Gangetic Plains of India is a large fertile tract of north-west India where intensive rice-wheat based farming has led to soil and water problems.  Agroforestry is among the viable options to overcome these problems. It has already shown positive effects such as increasing tree cover, augmenting wood needs of industries and ameliorating socio-economic status of farmers. Poplar based agroforestry models have been widely accepted by farmers. Site specific superior poplar clones have been developed for superiority, growth and resistance to pest and diseases. Farmers successfully grow the annual crops (sugarcane, turmeric), seasonal crops in winter (wheat, potato, mustard, mentha etc.) and summer season (cotton, moong, pearl millet, sorghum etc). The reduction in wheat grain yield varied from 10.2 to 46.6 per cent from first to sixth year as compared to open field. Selection of shade tolerant crop variety, appropriate sowing time, irrigation, seed and fertilizer dozes help to mitigate these losses. Wheat sown during first fortnight of November produced significantly higher grain yield than other sowing times. Wheat variety PBW 502 performed better amongst the six wheat varieties tested under poplar. Tree crop interactions influence the damage caused by insects and diseases. Cultural practices reduce the number of hibernating pupae of poplar leaf defoliators (PLD) which subsequently leads to lower incidence of these defoliators. Percent damaged leaves were more in fallow (5.44 - 60.53) and less in intercropped plantation (2.49 - 49.20). PLD adult emergence percentage was significantly less in intercropped and ploughed (49.5 and 67.5) than fallow (83.0) plantations

Abstract: Economy of Bihar is solely dependent on agriculture. Only 7% area is under forest as against a minimum 33% required for ecological balance. To counter the environmental degradation and to provide fuel, fodder and timber, different tree-crop combinations were tried for accessing their compatibility. As a result some agroforestry systems have been recommended and are discussed in this paper. Economics of some of the successful system has also been discussed. A detailed account of prevalent agroforestry practices in Bihar is also given. Agri-horticulture system is most popular system adopted by large and medium farmers in the region. Finally, constraints in adopting and carrying out research in agroforestry along with future strategies to extend agroforestry in Bihar are also given in the paper.

Introduction

Agroforestry land use system is one of the most important means for improving productivity of rural resources. People’s perception about agroforestry varies with their use perspectives. Only 7 % area is under forest as against a minimum 33 % required for ecological balance. Per capita consumption of wood fuel in Bihar is 0.27 m3 per year and industrial wood is 0.054 m3. One of the studies, on demand and supply of wood in Bihar conducted by Division of Forestry

Abstract: Dry land ecosystems cover about 41% of the earth’s land surface including hyper arid region. There is a considerable difference between them, in which arid region covers 7% of global lands. These are barely productive and provide a meager existence to small populations, usually nomadic with little settlements as in Thar desert. In addition to hyper arid, other types are arid, semi and dry-subhumid, which are in danger of becoming desertified. Environmental conditions are harsh affecting agriculture production. People of Indian arid zone are well acquainted about agroforestry- an age old practice in India, but maintaining only a few trees on farmlands does not serve the growing demand of fodder, fueldwood and food. Adoption of alternate land use systems like alley cropping, lay farming, tree farming, dryland horticulture etc. may intensify crop production and sustain the rural livelihoods. The selection of tree/shrub species may be based on the tolerance towards drought, salitnity/alkalinity prevailing in the region. Based on arrangements and combinations of trees/shrubs with associated crops, agroforestry are categorized into: agri-silviculture, agri-horticulture, agripasture, silvipasture, hortipasture and silviherbal. Common trees are P. cinreraria, T. undulata, Salvadora oleoides, Acacia nilotica, A. tortilis, Ailanthus excelsa, Zizyphus nummularia, Z, mauritiana etc.

Introduction

Agroforestry has vast potential not only to meet the demands of fuel, fodder, timber, medicine and other Non-wood Forest Products but also to enhance green cover, soil and water conservation and reduce pressure on forests. The objective of agroforestry is to take advantage of the complimentary relationships between trees, crops and livestock in such a way that the productivity, stability and sustainability of the total system are maintained. It has great potential in improving degraded and affected sites and has been recognized as a restoration agent, rehabilitation process, and bioremediation mechanism, in addition to increasing farm income.

Agroforestry is not a new practice for the farmers of Tamil Nadu.  It has been in practice in various forms e.g. growing Acacia leucophloea in the grazing lands with Cenchrus ciliaris in the Kangayam tract of Tamil Nadu exists from time immemorial to meet the mixed farming in that tract. In late 60’s farmers in coastal areas of Chengalpattu and Cuddalore districts started growing Casuarina to be sold as firewood.  This effort was entirely of the farmers without any support from the Government.

Abstract: Agro-ecosystem analysis of the island farming system revealed four distinct micro farming situations (MFS) viz., Hilly (MFS I), Slopping hilly upland (MFS II), Medium upland valley (MFS III) and Low lying valley (MFS IV). The enterprise combination study indicated the suitability of plantation based cropping sequences + backyard poultry and livestock in hilly areas, Short and medium duration paddy, vegetables, floriculture, plantations, fodder + backyard poultry + goat,  fish cum poultry cum duck and cattle in slopping hilly uplands, vegetables, plantations + backyard poultry, fish cum poultry cum duck in medium upland valley and long and short duration paddy, vegetables + backyard poultry, fish cum poultry and cattle in low lying valley micro farming situations. Productivity and profitability analysis of different farming systems under various micro farming situations revealed that net return obtained from cropping was Rs 3,26,408,  livestock and poultry was Rs 64,300 in MFS I where as under MFS II, it is Rs. 1,53,989 from cropping, Rs 77,176 from livestock and backyard poultry and Rs 12,465 from poultry + duck + fish. In MFS III, net return obtained from cropping was Rs 9,297 livestock was Rs 72,306 and poultry was Rs. 2,630 and poultry + duck + fish was Rs 24,957. Similarly, in MFS IV, net return obtained from cropping was Rs 57,760 where as Rs 90,893 was obtained from livestock, Rs 11,000 from backyard poultry and Rs 14,872 from poultry

Abstract: The study reports the influence of biophysical and socio-cultural factors on composition, diversity and distribution of plant species in the homegardens of the Andaman and Nicobar archipelago of India. In Nicobar mostly an aboriginal tribe the Nicobari predominates. The Nicobaries are Christians. However, in the Andamans people from different parts of Indian subcontinent have been rehabilitated in the mid twentieth century. Mixed culture prevails in South Andaman, but in the other Andaman islands either Bengali or Tamil culture predominates. Biophysically, South Andaman is hilly whereas Nicobar is flat. Rests of the islands lie in-between the two extremes. But, all are similar climatically. Twelve to thirty-four plant species are found in the homegardens that are planted, cared and harvested. These plants are: palm, fruit, spice and forest trees, formed three-storey structure in Andaman and two-storey structure in Nicobar’s homegardens. Floristic similarity among the homegardens of the Andamans is 82 to 92%. However, it is only 12-18% between the homegardens of Andaman and Nicobar. Compared to Nicobar, species richness is greater in the homegardens of the Andamans. But, diversity is higher and evenness lower in the homegardens of Nicobar. All plant species in the Nicobar’s homegardens are spontaneous in regeneration. Among the Andamans, proportion of spice trees is higher in the homegardens of South Andaman, mango and citrus in North Andaman, and pineapple and vegetables