Weeds can be controlled by different methods:

(a) Weedicides: These are the chemicals sprayed on the weeds to kill them. Excessive use is poisonous and causes environmental pollution.

(b) Mechanical removal: In this method weeds are uprooted by removing manually or by machines.

(c) Preventive methods: Proper seed bed preparation, timely sowing of crops, intercropping and crop rotation helps in weed control.