questions: telling that he has cultivated sali rice i a land of 3 bigha which is being attacked by yellow stem borer and causing damages. asking the control measure for the same. 
 answers: advised mr. rouf to spray 2.5 litres of chlorpyriphos 20ec in 250 litres of water. the volume suggested is for a land measuring 1 hectare and not to use the same chemical repeatedly.