Question

(a) the farmer founds zanthium and parenthium are also growing along with Paddy in the field? what are such plants called? how the presence of this plants affect
the crop. yield
(b) list any 4 methods for controlling and preventing such plants.

Answer 1

(a)These are called weeds. They compete for space, sunlight and nutrients with the crops and decrease the crop yield.
(b)We can control them manually and prevent them by using weedicides