Write four methods of weed control.

Q. Write four methods of weed control.
Ans. (i) Use of pesticides which include herbicides, insecticides and fungicides.
(ii) Mechanical removal by using harrow, hoe, or physical removal by uprooting or cutting them close to the ground.
(iii) Preventive methods such as proper seedbed preparation, timely sowing of crops, intercropping and crop-rotation.
(iv) Tilling before sowing of crops helps in uprooting and killing of weeds.
(v) Biological method involves growing crops like mustard along with main crop which do not allow weeds to grow.

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