What are weeds ? and what are the methods to control weeds ?

Weeds are undesirable and unwanted plants present in the cultivated farm. They compete with crops for food, space and light.

They can be controlled by the following methods:

i) Mechanical methods like uprooting and weeding

ii) Cultural methods like intercropping and crop rotation

iii) Using weedicides

iv) Biological control such as using insects which consume and destroy the weeds