Abstract:
Two field experiments were conducted to assess the efficacy of different insecticides for
controlling Leplocorisa acula Thunb. at different population levels. In the first experiment, where there was
more of a population stress, the insecticides malathion, methyl parathion and fenthion were found to he
more effective in controlling the hug, the percentage reduction heing 75.72 to 97.15, 72.71 to 94.76 and
69.92 to 91.85 per cent respectively. In the second experiment with lesser population stress also, the same
insecticides showed the maximum effect in control! ing Leplocorisa acula in the field. The effect of these
insecticides was indicated by the higher grain/chaff ratio in all these treatments.
