eChapters

7.1. Sustainability in Agriculture

Sustainability essentially means meeting the needs of present generation without compromising the ability of future generation to meet their own needs. The concept used by FAO to convey the meaning of sustainability necessarily rely on management and conservation of resource base in relation to orientation of technological and institutional changes to ensure satisfaction in meeting human needs. Sustainability normally covers the meaning of conservation of natural resources. The natural resources are land, water, forest and livestock. The maintenance of these resources suffers due to low or no maintenance because of absence of infrastructure and inadequate finance. Apart from these constraints, poor management ability is also responsible for degradation of natural resources. To equip the people, in general, poor managerial ability has to be upgraded through multidisciplinary program, appropriate technology and establishment of peoples’ organizations. To work on sustainability as defined for maintenance and conservation, the people in general ought to develop a positive perception to work before the program is initiated. The perception directs action of individual in a positive manner. Therefore, it is necessary to determine the perception of people about the concept of sustainability, particularly in the field of agriculture.

Organic farm produce is now gaining momentum in the world. People of high status and concerned with health hazards are interested in organic product. Since 1990, the market of organic product has grown reaching a value of Rs 55 billion in 2009 as per the Organic Monitor in the world. The demand has been reflected in increase of land under organic farming which has grown correspondingly at a rate of 8.9% per annum. At present there is approximately 37,000,000 hectare of land under organic farming worldwide. The idea has been percolated to rural areas and the farmers of all kinds are aware of organic farming. In terms of organic land, Australia leads the pack with 11.3 million hectares followed by Argentina (2.8 million hectares) and Italy with more than one million hectares. In Asia, China, India and Japan are the largest organic producers. Japan is the region’s largest market and buys majority of Asia’s production.

Social research concentrates more on socio economic variables to find out effects of the events that take place in social system. The magnitude of variation in the variables assumes to bring variation on the effect. The variables relating to farmers of small farms are many and they are specific to farming system of the coastal ecosystem. Such variables were grouped under personal, social, economic, communication behaviour, marketing behaviour, farming behaviour and training. The sub variables under each heading were given in the following table.

This chapter “Research Methodology” deals with methods and procedures followed in conducting the study. The chapter contains three parts. The first part deals with the sampling technique and the second part covers the empirical measures of different variables and last part describes details of data collection and statistical measures used in the study.

3.1. Brief description of the state

Odisha a coastal state of India lies in between 170 31’ to 220 27’ North latitude and 810 27’ to 870 30’ East longitude. It is bounded by West Bengal in the North East, Jharkhand in the North, Chhatisgarh in the West, Andhra Pradesh in the South and Bay of Bengal in the East. The main features of the state are given in Table 2.

Concept of sustainable agriculture is of multiple dimensions. It denotes potential of technology, fragile ecosystem, and human interference of limited natural resources. An understanding of sustainable agriculture in brief indicates:

1. Increase in production with efficient use of resources

2. Control of external inputs of synthetic nature

3. Nutrient cycle within the farm must be closed.

Technical Advisory Committee (TAC) of CGIAR reveals that sustainability is a dynamic concept that allows for changing needs of a steady increasing global population. Sustainable agriculture should involve the successful management of resources for agriculture to satisfy changing human needs while maintaining or enhancing the quality of environment and conserving natural resources.

The dictionary meaning of sustainability is to keep an effort continuously the ability to last out and keep from falling. Sustainability basically refers to the capacity to remain productive while maintaining the resource base. Locker (1988) explained the term sustainable, a time dimension and the capacity of farming system to endure indefinitely. The concept of sustainability should serve as guide to agricultural practices. It must include technology and practices that both sustain and enhance productivity to meet the increasing food demands (Rutton, 1988). In short, environmental sustainability implies that it is compatible with and supportive of the criteria like;

With increase in population, demand for basic needs has been steeply rising during the past decades in most of the developing countries of the world. The growing population needs food, clothing, shelter, fuel and fodder for them and their livestock. In India, 50 to 70% of the people are living in rural areas that neither have adequate land holdings nor alternate service opportunities to produce or procure these basic commodities.

The present day living demands quality life. The quality life can be maintained provided our surroundings remain intact or improved to provide means for better living. With increasing advancements in science and technology, we have manipulated our environment without paying adequate attention to consequences. The result has become so alarming that now all the countries of the world are trying to actualize the meaning and concept of sustainability. It is more so in case of agriculture as it forms core base of life supporting system.

The magnitude of manipulation varies from country to country depending upon level of development. It goes without saying that development and manipulation of environment are interrelated having positive and negative effects. To eradicate ill effects of manipulation, we need to understand the meaning of actualizing of sustainability.

• Spray Angle — The angle subtended at the final orifice by the edges of the spray pattern.
• Variation in discharge rate between first and last observation shall not be more than 5 percent.
• The volumetric efficiency requirement for roller vane type pump shall be minimum 80 percent.
• The volumetric efficiency of piston, plunger type pump shall be minimum 80 percent.
• If the droplet size is reduced from 2 mm to 1 mm, number of droplets produced will increase by 8 times from the same volume.

Measurement also forms a basic element of any control process. The measurement of discrepancy between the actual and desired performance of a system is central to any control process. Electronic instrumentation provides the solution to many and varied problems of measurement and control. It is often required to change or transduce a measurand into a corresponding electrical signal. The elements which changes/converts the physical variable in electrical signal are termed as sensors or transducers. For a measurement to be useful it must be reliable. That is where question of accuracy or uncertainty of a measurement arises. This may be dealt with clear understanding of measurand and measurement system.

For development of agricultural engineering machineries, materials and manufacturing techniques play a very important role. Functionality, efficacy, life span, economics and aesthetic of any machine or structure are affected severely by the material of fabrication process. The manufacturing processes discussed in this chapter also include the pretreatment to manufacturing and structural materials. Wood and some kind of ferrous alloys had been the choice of materials for fabrication of agricultural machines in past few centuries, whereas these materials along with mud, bamboo, some agricultural residues and some earthen materials were the materials of choice for agricultural structures. Engineering materials are available with wide range of properties and characteristics. There are many properties, which are inherent in the materials, and some of them can be changed during processing and manufacturing.

Energy is defined as the capacity of doing work and is necessary for survival. It is basic input to any society’s development and economic growth. Everything happens in the world is the expression of flow of energy from one form to other. There are different sources of energy, i.e., chemical, mechanical, fossil, nuclear and renewable energy.

The following products are obtained from refining of crude oil

Ergonomics (also known as Human Engineering, Human Factors or Human Ergology) is the scientific study of relationship between a person and his/her working environment. The term environment includes the tools, materials and method of work, ambient conditions and physical environment in which the work is carried out, and also the organizational factors. Ergonomics application can help in increasing the efficiency and productivity, reducing drudgery and occupational health problems, and enhancing safety of workers in various activities.