eChapters

Introduction

Today, increasing attention is focused upon the impact farming practices, are having on the environment and there is an increasing emphasis on more sustainable methods of crop production. Systems need to be adopted that are more sensitive to environmental issues, genetic diversity, wildlife and their habitats and in some cases the social structures of rural communities. Furthermore, consumers around the world are more sophisticated and critical than in the past, demanding to know how and what has been used to produce their agriculturally derived products. These issues can be taken up as three main challenges: 1) to improve food security, rural livelihoods and income; 2) to satisfy the increasing and diversified demands for safe food and other products; and, 3) to conserve and protect natural resources. Several scientific advancements have been made in the field of agriculture to address these challenges.

Introduction

The term cropping system refers to cropping patterns used on a farm and their interactions with farm resources, other farm enterprises, and available technology over a fixed period. The fruit based cropping system includes different fruit crops as major component on particular field for a fixed period through intercropping or multistory cropping. Intercropping is growing of two or more crops together on same piece of land simultaneously with definite row arrangements to utilize farm resources efficiently. Multistory/Multitier cropping refers to growing together of  crops of different heights at the same time on the same piece of land and thereby using land, water and space in an efficient and economic manner.

Land, a non-renewable resource, is central to all primary production systems. Over the years, the country’s landmass has suffered from different types of degradations. Land degradation can be defined as lowering of land productivity due to the deterioration of land’s physical, chemical and biological condition. Physical land degradation is due to water erosion, wind erosion, compaction, crusting and water logging and chemical degradation is due to the processes of salinization, alkalization, acidification and nutrient depletion. Biological degradation is due to the reduction of soil biota and organic matter, degradation of vegetation and impairment of activities of microflora and fauna. Land degradation is steadily increasing due to the growing pressure on land and unsustainable land use. Land degradation and the associated loss of soil productivity and quality is of great concern both from food production and environmental conservation point of view. An ever-increasing population created enormous pressure on land resources.

Introduction

Soil test-based fertility management is an effective tool for increasing productivity of agricultural soils that have a high degree of spatial variability. However, major constraints impede wide scale adoption of soil testing in most developing countries. In India, these include the prevalence of small holding systems of farming as well as lack of infrastructural facilities for extensive soil testing (Sen et al., 2008). Under this context, GIS-based soil fertility mapping has appeared as a promising alternative.

Introduction

The climatic elements such as solar radiation, temperature, precipitation, humidity, evaporation, evapotranspiration and wind velocity affect growth and development of saplings. These climatic factors are not favourable for successful propagation of various horticultural crops in arid region. The main climatic features of Indian hot arid agro-ecosystem is high wind speed, sand storm and high temperature during summers up to 48-50oC  and during winter season temperature falls to the 2-3^°C, low atmospheric humidity i.e. 20-30% during maximum period of the year. Moreover the relative humidity goes down to below 10 per cent during summer months.

Introduction

Origin of Water Bodies and Hot Arid Regions (Thar Desert) 

The origin of the hot arid regions (Thar Desert) is a controversial subject. Some consider it to be 4000 to 10,000 years old, whereas others state that aridity started in this region much earlier. Another theory states that area turned to hot arid zones (desert) relatively recently: perhaps around 2000 - 1500 BC. Around this time the Ghaggar-Hakra ceased to be a major river. It now terminates in the desert but at one time was a water source for the Indus Valley Civilization centre of Mohenjodaro. It has been observed through remote sensing techniques that Late Quaternary climatic changes and neotectonics have played a significant role in modifying the drainage courses in this part and a large number of palaeochannels exist.

Introduction

Water is the driver of life/ liquid of lift or elixir of life for flora and fauna. It plays an important role in plant as it constitutes about 35-95% part of plant. Water is a mode of transportation of nutrients from roots to shoots and vice-versa, a thermal regulator of temperature inside the plants, source of hydrogen for the reaction of CO₂ for photosynthesis and is essential for maintaining turgidity and servility of plants. Water is required for agriculture as well as for other sectors (domestic, industries, etc) and the demand of water is increasing alarmingly.  Presently agriculture consumes over 80 per cent of total water consumption in India. The country is endowed with many perennial and seasonal rivers. The river, low ever 71 per cent of water resources is concentrated in 36 % of the geographical at area. Water resource of India, population in per capita water ability and estimates of water needs are given below.

Land and water resources are central to agriculture and rural development, and are intrinsically linked to global challenges of food insecurity, land degradation , poverty, climate change adaptation and mitigation that affect the livelihoods of millions of rural people across the world. Current projections indicate that world population will increase from present figure of 6.9 billion to 9.1 billion in 2050. As a result, the world food demand will increase. Since, both land and water resources, the basis of our food production, are finite and already under heavy stress, so future agricultural production will need to be more productive and more sustainable at the same time. The largest contribution to increases in agricultural output will most likely come from intensification of production on existing agricultural land. This will require widespread adoption of sustainable land management practices, and more efficient use of irrigation water through enhanced flexibility, reliability and timing of irrigation water delivery. The prevailing patterns of agricultural production needs to be critically reviewed.

The hot arid regions are spread over about 31.7 million ha area mainly in the States of Rajasthan, Gujarat, Andhra Pradesh, Punjab and Haryana, which inhabit on an average 61 persons per square km making up a population of nearly 20 million people. The Indian arid zone is characterized by high temperature and low and variable precipitation which limit the scope for high horticultural productivity. However, these conditions greatly favour development of high quality production of fruits such as date palm, ber, pomegranate, citrus, aonla, bael, grapes, guava and in vegetables such as cucurbitaceous crops, spices and some medicinal plants. The optimized technologies and inputs could increase the existing low productivity. It is now realized that there is a limited scope for quantum jump in fruit and vegetable production in the traditional production areas. The amelioration of the extreme conditions is also considered vital for life support to the inhabitants of this area.

Introduction

The arid region of India, constituting 12 m ha area  which occurs dominantly in the northwestern part of the country. The state of Rajasthan accounts for highest area (61%) followed by Gujarat (19.6%) Punjab (5%) and Haryana (4%) of the total geographical area of hot arid ecosystem. These areas experience an annual rainfall between 100-500 mm with the coefficient of variation 40-70 per cent. The mean annual rainfall in the western Rajasthan varies from less than 100mm in extreme western part of the Jaisalmer district to more than 400 mm in eastern part of the region. The high temperature during summers as high as 48^ºC and low in winters up to –3^ºC. High wind velocity  (10-13 km /hr) and high annual  evapo- transpiration  (1527 mm /year)  again gives a great threatening to the arable cropping in this region. The vagaries of monsoon in terms of its occurrence and distribution during the season has a wide variability >48 per cent with 30-35 days of average rainy days per year.

A key question facing agricultural scientists in the 21^st century is how to produce sufficient amounts of food, feed and farm income while protecting and improving environmental quality (Robertson and Swinton, 2005). Intensive soil tillage, mismanagement of land, water and fertilizers had severe negative economic, environmental and social consequences (Foley et al., 2011; Godfray and Garnett, 2014; Tilman et al., 2011). Presently depletion and / or degradation of natural resources (land, water, and biodiversity), decreasing farm profitability, low input use efficiency (fertilizer, water, energy, pesticides, and labor), environmental pollution (soil, water, air), climate change and scarcity of farm labour are threatening the sustainability of crop production systems.

Introduction

Agricultural research and development in the past 50 years has primarily focused on increasing productivity through intensification of input use to  maximize grower income and  minimize hunger and food shortage (Andow et al., 2009). The full environmental costs of this policy such as water and soil pollution, soil and resources impoverishment (Tegtmeier & Duffy, 2004), only recently became apparent, and this awareness has led to the beginning of a change in philosophy away from purely production-oriented practices towards those that are more environmentally sustainable (Alexanian, Metera, & Schuler, 2009). In addition, agriculture and its interactions with the natural environment have begun to emerge more strongly in political, economic and social agendas reflecting the increasing importance of sustainability to consumers. Consumers are now demanding food that are of high quality, locally produced, regionally specialized, organic, fairly traded, and are humanly and ethically produced. Achieving all or some of these goals with fewer resources is now the objective of modern sustainable agriculture (Mason, 2003).

The Indian arid zone is characterized by high temperature, low and erratic rainfall which limits the scope for high crop productivity. However, these conditions greatly favour the development of improved quality in a number of fruits such as date palm, ber, aonla, bael, pomegranate, kinnow, lasoda and in vegetables such as cucurbits, legumes and solanaceous crops, spices, flowers, medicinal and aromatic plants. The existing low productivity could be increased by following improved new technologies and inputs. It is now realized that there is a limited scope for quantum jump in fruit and vegetable production in the traditional production areas.

Abstract

Forestry in India is very important for its wood, fuel and many non-wood products which were being used from ancient times by our forefathers for different personal and commercial use. Farmers face lots of problem in forestry because of its long gestation period, dependence on nature, bulkiness of outputs, season oriented production, perishable in nature, lack of processing centres for value addition at farm and intermediate levels, price fluctuation of forestry products, forced sale/distress sale of tree growers, low wage rate to workers in forestry activities and farmers in sufficient knowledge on market information. Establishment of institutional setup to promote forestry is urgent in the recent times.

Abstract

Intellectual property has increasingly assumed a vital role that we are witnessing today with the rapid pace of technological, scientific and medical innovation. Moreover, changes in the global economic environment have influenced the development of business models where intellectual property is a central element establishing value and potential growth. In India several new legislations for the protection of intellectual property rights (IPRs) have been passed to meet the international obligations under the WTO Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS). Forest seed of economic importance and the non-timber forest products (NTFPs) play a very important role in the country’s economy.

Abstract

Forests are the second largest land use after agriculture in India covers around 24% of the geographical area. The key tree species like Teak, Sal, Shisham etc are commonly used for timber purposes however the species like Eucalypts, Acacias, Poplar, Melia and Leucaena are mainly used under agroforestry system in India. The most of the genetic material (seed/planting stock material) used in forestry sector in India is obtained from unspecified sources, from stands, natural or planted, which are neither classified nor managed specifically for seed or planting stock material production.

Abstract

People dealing with forest tree seeds are very much concern with the collection and supply of pure and quality seed. Assessing genetic purity of tree seed is always a challenge. Besides, studying tree diversity and tree improvement are also the key components of forestry. With the discovery of DNA based molecular markers these tasks have been made easier and authentic. So, the basic concepts behind different molecular markers were the principal concerns of this chapter. It has been focused here about the pros and cons of the markers along with their applicability. The application may be expanded towards hybrid seed testing and even to clonal forestry.

Abstract

The forest cover has declined at an estimated rate of 3-3.5% per annum due to huge deforestation in many countries during last decades. Being the prime necessity for forest regeneration, importance of quality seed management and its handling procedures have been genuinely recognized for greater interest of the environmental stability throughout the world. Growing of new trees and forests would play a major role to save the future world particularly under the present scenario of climatic change and this implies an increased demand of quality forest reproductive materials.

Abstract

In afforestation and reforestation programs, seed has become a valuable commodity and its collection, identification, handling, processing, testing, storage and certification requires prudent planning. The research and development in seed science and technology have made significant progress in recent years. The quality of seed has been the subject of increasing interest among Forest Managers and the Scientists. Not every seed is suitable for sowing. Sometimes, the seeds do not develop into normal plants or the plants produced do not produce the expected harvest. This manuscript reviews, the progress made to-date in the forest tree seed germination and highlights future line of action.

Abstract

Seed is the most important input component for productive forestry. Large quantities of quality seed are needed every year to raise the nursery stock for propagating the desired plant species.  Commercially important species like Dalbergia sissoo, Eucalyptus tereticornis, Pinus roxburghii and Populus deltoides have become more important. Superior genetic qualities of seed have profound positive impact on growth rates and productivity of plantations and quality of the produce. To save and multiply the entire lot of valuable forest plants it is very essential to preserve and multiply those plants for which special type of nurseries are to be established. There is necessity to have special techniques and methods to meet the demand of seed and only hi-tech nurseries can satisfy this type of demand.