anybody know?
insect
herbicides are used to destroy weeds or fungi which may destroy or cause the crops to get diseases.
Herbicides are members of the group of pesticides; thet are used to kill plants unwanted by the human beings.
they are used to kill un wanted plants
they are sometimes used as herbicides ...
I believe you are asking if insecticides and herbicides are used as preservatives. If so, the answer is no. Insecticides kill insects that might damage plants. Herbicides are used to kill plants ( usually as a weed control ). Both are NOT good to consume on fruits and vegetables. They are poisons.
To suppress unwanted plants referred to as "weeds".
Only those compounds which have been specifically approved for organic use.(By the way, herbicides are pesticides.)
Yes they are. Especially on farms.
Herbicides used to fend off weeds
No, herbicides did not smash anything. They removed the cover of jungle canopy and allowed aircraft to see the enemy.
The most effective herbicides available are systemic herbicides. These herbicides travel all the throughout the plant, including to its roots. They tend to take a slightly longer time than other herbicides but are much more effective.