Indiscriminate use of pesticides is a cause for
1) Killing of harmful insects
2) Killing of useful insects
3) Increase of crop yield
4) Reduce of crop yield

Excessive use of fertilizers, pesticides and insecticides to increase crop yield leads to

The environmental friendly method of killing harmful insects is throgh the use of

Aquatic fern is used to increase the yield in paddy crop

The environmental friendly method of killing harmful insects is through the use of

The free-living fungus Trichoderma can be used for 1) killing insects 2) biological control of plant diseases 3) controlling butterfly caterpillars 4) producing antibiotics

The free-living fungus Trichoderma can be used for 1) killing insects 2) biological control of plant diseases 3) controlling butterfly caterpillars 4) producing antibiotics

Bacillus thuringiensis has been used to kill certain insects such as

Write the modes by which insects affect the crop yield.

Pesticides and insecticides are chemicals used to kill pests and insects that affect the production of crops.