Limitation of herbicides
a) Lack of technical know-how
b) Environmental pollution.
c) Variety of herbicides needed to control weeds.
d) Required considerable skill on the part of the users.
e) Possibility of crop injury.
f) Military use of herbicides is a greatest misfortune of their discovery because of possible hazards to human, animals, soil and environment.
g) Development of resistance on the part of weeds.