Green manuring enhances crop yield by
$5 -10\%$
$15 -25\%$
$30 -50\%$
$60 -70\%$
The pesticide used in foundations of buildings for preventing termite attack is
Herbicides prevent
Carbaryl is a
The earliest pesticide was
Which of the following pesticides have been successfully used in the control of locusts and grasshoppers in India