Explain how weeds are harmful for plants. State the different ways of weed removal practiced by farmers.
Weeds are the unwanted plants, that grow along with the crops and hinders its growth. It uses up nutrients which are meant for the crop. They also compete for water and light and thus affect the production of the crop.
The different ways of weed removal practiced by farmers are
Manual removal: Weeds can be removed by uprooting unwanted plants with the help of trowel (khurpi) or harrow.
Tilling before sowing: Ploughing the field, before sowing the seeds, uproots the weeds. Weeds then dry up and get mixed up with the soil.
Weedicides: These are chemicals which kill the weeds but do not harm. the crops. These are sprayed on the fields.