Benefits of crop rotation:
1. A particular crop (or a particular group of crops) requires certain nutrients. If it is grown on the same soil year after year, the soil becomes deficient in these nutrients. Crop rotation takes care of this problem. Usually a pulse(leguminous) crop is grown in the interval between two cereal crops. Cereal crops take away nitrogenous compounds from the soil. The nitrogen-fixing bacteria in the roots of pulse crops restore these compounds.
2. Crop rotation helps control pests and diseases too. When the same crop is grown in the same field over and over again, the pests specific to the crop get the right conditions to multiply more and more rapidly. When another crop is grown in between, their growth slows down because they do not find favourable conditions.
3. The fact that crop rotation helps maintain soil fertility, and control pests and diseases, means that the farmer has to spend less on fertilizers and pesticides. It helps to conserve the environment too because accumulation of chemical fertilizers and pesticides in the soil and water bodies is harmful.
Which of the following are correct : (a) Crop rotation helps control pests and diseases too. (b) Crop rotation helps to conserve the environment too because accumulation of chemical fertilizers and pesticides in the soil is harmful. | |||
Right Option : C | |||
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Which of the following are correct : (a) Cereal crops take away nitrogenous compounds from the soil. (b) The nitrogen-fixing bacteria in the roots of pulse crops restore these compounds. | |||
Right Option : C | |||
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What are the benefits of crop rotation ? | |||
Right Option : D | |||
View Explanation |
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