McqMate
| Q. |
Crop rotation helps to – |
| A. | lessen use of pesticides |
| B. | eliminate parasites which have selective hosts |
| C. | yield more crops |
| D. | produce a greater choice of plant products |
| Answer» B. eliminate parasites which have selective hosts | |
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Explanation: The growing of different kinds of crops on a piece of land in a preplanned succession is known as crop rotation. In the rotation of crops, leguminous crops like pulses, beans, peas, groundnut and Bengal gram are sown in-between the seasons of cereal crops like wheat, maize and pearl millet. The leguminous plants are grown alternately with non- leguminous plants to restore the fertility of the soil. So it brings about an increase in the production of food grains. Besides, rotation of crops helps in weed control and pest control. This is because weeds and pests are very choosy about the host crop plant, which they attack. |
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