9. What are weeds? How can we control them?
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Answer:
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Explanation:
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Answer:
Weeds are unwanted wild plants that grow in the field. Weeds compete with the crop for nutrients, light, and space. As a result, crop plants get lesser nutrients, light, and space for their development.
Some important weeding methods are:
†’ Weeds can be controlled using weedicides. It is a chemical, which is sprayed in the fields to kill all available weeds. Weedicides are not harmful to crops.
†’ Tilling before sowing of crops also helps in removing weeds. Tilling uproots the weeds. The best time for the removal of weeds is before they produce flowers and seeds.
†’ The manual method of removing weeds is with the help of a khurpi. It involves regular uprooting or cutting of weeds close to the ground.