FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The type of crops grown in a paddock is changed regularly in a planned order.
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Fast-growing crops are grown and ploughed back into the soil before they seed.
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Part of a crop not harvested for sale can be returned to the soil
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The soil is not cultivated, but seeds are sown directly into the soil.
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Detailed explanation-1: -Green manure for improvement in the soil nutrient: Green manure crops helps in increasing the nutrient uptake efficiency, biomass of the microorganisms, water retention capacity and the organic matter in the soil. And it also leads to the reduction of the soil erosion nutrient.
Detailed explanation-2: -Green manuring supplies soil organic matter, as already discussed. It can conserve or even add nutrients. Nitrogen used by the green manure crop has been protected from leaching loss and microbial degradation that could take place if the land were left fallow.
Detailed explanation-3: -Green manuring is a method of putting back into the soil living plants at the peak of their growth. We do this by using leguminous plants (like mung bean, kadios, peanut and other wild plants) or we also use wild sunflowers.
Detailed explanation-4: -Advantage of Green Manuring. Soil Structure and tilth improvement. Fertility improvement of soils. Amelioration of soil problems. Improvement in crop yield and quality. Pest control.