To kill the insects before they eat the crop.
Insects affect crop yields in several ways.Many crops, especially fruit, are insect pollinated - particularly by bees. So if there were no insects there would be no crops.Insects can damage plants and kill them, or can eat the crops, which reduces the yield.Insects can still eat crops even after they have been harvested.However, the overall contribution of insects to crops is beneficial to humans.
Some insecticides can no longer kill insects because the insects have evolved to be immune to the poisons. Also, most insecticides do not kill insects on contact.
No they cannot kill.
Pesticides are used in order to kill insects. If insects get on some types of vegetation, it can kill it.
Yes they do kill .
Grub Ex does not kill insects. If you apply it according to the package directions it should get rid of grubs, but not harm helpful insects.
It shades the crop and kills it
herbicides to kill the plants, insecticides to kill insects
it can even kill human.....
we kill them for fur and land but by doing so we are destroying them and will run out if they are not helped
You should not kill all insects...only those harmful insects...some insects benefit for us..some they harm us especially pests...so,don't kill ALL of them
By removing the head or destroying the brain.
The cacao leaf can kill insects because they contain tannins. Tannins are toxic to most insects like mosquitoes, gnats, ants, and fly's.
Timber flies kill their prey by biting them and paralyzing other insects. They have very strong jaws which can kill other insects in one bite.
to kill insects
To kill insects