E Give reasons for the following. 1. Crop rotation help in replenishing soil nutrients. 2 Manures are better than chemical fertilizers. 3. Earthworm are considered the friend of the farmer. 4. Drip irrigation could be effective in places with water scarcity. 5. Physical removal of weeds is better than weedicides.
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Answer: 1) Changing crops routinely allows the land to remain fertile, since not all of the same nutrients are being used each season. For example, planting a legume, such as soybeans, helps to replenish necessary nitrogen in the soil. ... Crop rotation also helps to battle against the forces of erosion
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