Writ a blog in about 100 to 150 words on organic farming
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Nature adopts different method to supply of nutrients to the soil and maintain the fertility of soil. The supply of nutrients are undisrupted in the nature. The plant leaves produces carbohydrates and later converting these carbohydrates into sugar, starch, cellulose, lignin etc.
Organic manure involves blending the carbon, nitrogen, phosphorus, potash rich materials, in which the trace elements are present in proportion and the crucial carbon- nitrogen ratio (C/N) is neither too high nor too low. This kind of preparation is within the competence of farmers. There is no need of adding some nitrogenous fertilizer as supplement. The chemical nitrogenous fertilizer upsets the nutrient balance of soil. Nitrogenous fertilizer is known as stimulant of growth and there is craze for it among the farmers.
Nature has made ample provisions for the supply of nitrogen through the variety of ways. Bacteria in the nodules of leguminous plants capture nitrogen from the atmosphere and fix it into the soil. Various genera have been endowed with nitrogen fixing quality so that this operation could continue under different conditions. So do some ferns (azolla), blue green algae and some genera of free living bacteria (azatobacter, Clostridium).
For the supply of all other macro and micro nutrients as also of vitamins and plant growth promoting substances, there are elaborate arrangements in natural soil systems. A wonderful fertilizing agent of Nature is the earthworm population which thrive in the soil and ingest soil, mix it with secretions and leave a far richer soil cast.
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