Weeds are called the undesired plants that grow along with the crops. These weeds eat on the nutrients provided to the crops, thereby reducing the supply of nutrients to the crops, hampering their growth. To improve the growth of the plants, the development of such undesired weeds needs to be reduced.
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.
Example: 2, 4-D (2, 4 dichlorophenoxy acetic acid)