explain any two methods of biological manuaring
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green manure
compost manure
Explanation
green manure: green manure increases the percentage of organic matter in the soil.the roots of such manure go deep into the soil.these help in the suppression of weeds and the prevention of soil erosion
compost manure: it improves the soil structure and water and nutrient holding capacity of the soil.thus,it increases the nutrient value and there by improves the health of the plants
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