Question

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Answer 1

2). Manure and fertilizers are the main sources of nutrient supply to soil crops . continuous use of the same crop land leads to deficiency of minerals nutrients in soil. Manure improves the physical and chemical texture of soil and fertilizers compensate the depleted nutrients in soil. To increase fertility of soil , manure and fertilizers are used in fields . Some specific fertilizers are also used on specific need of some inorganic nutrients of crop plants.