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3.  Maintaining Diversity

"Agriculture need not always be a loss-making proposition. There is money to be made if a farmer can diversify into niche crops and not stick to staples. Considering India's varied landscape and climatic conditions there is immense potential to cultivate a variety of crops that can fetch a good price in the world market. Farmers need to maximize yield from the farms without excessive exploitation of soil and water. Disproportionate importance was given to cereals, particularly rice and wheat, in the urge to achieve food security. There is a need to shift focus now. Crop diversification is necessary if farmers are to protect themselves from price fluctuations in the global market as well as the vagaries of weather. As with flowers, cultivating vegetables and fruits for niche markets could enable farmers to increase incomes. The way forward is to promote a variety of crops and, wherever possible, livestock and fisheries. A slow, but certain, change is taking place in the food basket of Indian homes. Much more poultry, fish and fruit are consumed domestically than ever before, and the demand is expected to grow." [1]

Here the focus of the author is on methods to increase exports and earn foreign exchange. This may increase the farm income but this perspective may not lead to lowering of the emissions.
 
Crop diversity plays a significant role in the metabolism of a traditional agricultural ecosystem and thereby contributes to its productivity. If traditional small farmers plant such a wide diversity of crops, it is not primarily to maximize yields, but to reduce vulnerability to discontinuities such as droughts, floods and plant epidemics. As James Scott, who was an authority on peasant agriculture writes
"the local tradition of seed varieties, planting techniques and timing was designed over centuries of trial and error to produce the most stable and reliable yield possible under the circumstances... "
 
Typically, the peasant seeks to avoid the failure "that will ruin him rather than attempting a big but risky killing", and this he largely achieves by cultivating a carefully chosen diversity of crops and crop varieties, whose exact composition he is well capable of adapting whenever necessary to changing environmental requirements. [2]
 
Intensive agriculture development around high yielding varieties fuelled the green revolution. Systems for large-scale multiplication of HYV seeds, programs of seed replacement, seed villages etc., are the dominant support systems established for the purpose. Private companies and corporate firms came into picture with the advent of hybrid seeds. Unfortunately, the same systems are extended to rainfed areas and are expected to support agriculture growth. The requirement of seed systems in rainfed areas are however, strikingly different. The following factors define the contours of the seed system requirements:


  • Local availability and access to diversified seed is the key to resilient farming systems.
  • Diversity in crops/ varieties to adapt to different soils, topography and rainfall pattern (early / late) is a major requirement in rainfed areas.
  • Seeds for different crops (intercrops, green manure crops, contingency crops etc.) and different types of varieties are needed.
  • Seed losses due to fluctuating rainfall is a common phenomenon, high cost of seeds in such situations impose higher risks.
  • Timely availability of seeds, easy access, and diversity in seed and redundancy in seed supply are critical parameters of rainfed seed systems.
  • Genotype - environment interaction is higher in rainfed areas; more stable varieties are needed that can be multiplied locally.
  • Many of these seeds may not be viable as commercial enterprises. Community control/ management over this complex seed system therefore, are pertinent. [3]


Diversity in crops helps food security. As we do not know which variety of crop will survive in changing climatic conditions such as floods, drought, heat waves and cold waves, it is better that we try heterogeneous variety of  crops rather than planting only one variety of crops on the large patch of land. There is heavy risk in opting for homogeneous variety of crops in case of its failure or lack of resistance to climatic condition. Therefore, using genetically modified crops bear a risk. GM varieties are immune to certain climatic conditions or particular types of pest. GM variety fails to adapt to the climate for which it is not immune to and as a result crop fails. GM variety needs a laboratory treatment by farmers, the irrigation has to be on time, and certain amount of delay may result in crop failure. Therefore, we need to develop a variety of seed and crops with diverse characteristics. Crops need to be more flexible though it may not give high yield still we can avoid the situation such as starvation due to adverse climatic condition. [4]
[5]



[1] Coming Up Roses. The Times of India, Bombay, 17/02/2007 

[2] How to feed people under a regime of climate change by Edward Goldsmith, The Ecologist magazine, October 2003 

[4] Feeding the World under Climate Change by Edward Goldsmith, Institute of Science In Society,  06/10/2004

[5] Industrial Agriculture and Global Warming by Peter Saunders. Independent Science Panel, 20/10/ 2004

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