1. Name three natural methods of adding nutrients to soil.
2. What are weeds?
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A . Field fallow, crop rotation and mixed cropping are three natural methods of replenishing the nutrients of the soil. These natural methods are not enough and farmers have to resort to manures and fertilisers.
A weed is a plant considered undesirable in a particular situation, "a plant in the wrong place". Examples commonly are plants unwanted in human-controlled settings, such as farm fields, gardens, lawns, and parks. ... In the same way, volunteer crops (plants) are regarded as weeds in a subsequent crop.
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1) fallow field ,crop rotation and mixed cropping are the three natiral methods of adding nutrients to the soil.
2)weeds are the undesirable crops that grow along with the crops .
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