Question

Why is it vaid that organic manures are best for the plants?​

Answer 1

Organic manure provides all the nutrients that are required by plants but in limited quantities. 2. It helps in maintaining C:N ratio in the soil and also increases the fertility and productivity of the soil. ... It improves both the structure and texture of the soils.

Answer 2

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Organic manure provides nutrients to plants, slowly and steadily. It keeps the soil porous, improves its water retention capacity, and checks the micronutrient deficiencies which may be caused by excessive application of chemical fertilizers. The chemical free manure effects a long-range improvement in the soil.