GK
SOIL EROSION AND CONSERVATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Removal of wild plants
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Eradication of weeds
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Removal of wild animals
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Addition of their excreta to the soil
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Detailed explanation-1: -Moderate grazing can be beneficial because it leads to the addition of excreta of the animals into the soil. This enriches organic matter to the soil so that it can provide essential mineral nutrition to the plants.
Detailed explanation-2: -Overgrazing by cattle reduces plant cover, eliminating the most desirable forage species first. This opens up the land to undesirable weeds, brush, and trees and leads to increasing soil erosion and lower soil fertility. The land becomes less and less productive.
Detailed explanation-3: -Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods. It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature reserves.