Weeds are unwanted plants which grow along with the crop plants in cultivated field and cause reduction of crop yield.
The different methods of weed control are :
(a) Mechanical methods : Weeds can be removed by uprooting by hand or by using trowel.
(b) Cultural methods : By employing timely sowing of seeds in properly prepared beds, intercropping and crop rotation methods, weed growth can be minimized.
(c) Chemical methods : Weeds can be destroyed by spraying chemical called weedicides.
(d) Biological methods : Certain insects and crop plants prevent the growth of weeds.