AAKASH CHAND AND RUCHIRA TIWARI

The effect of cow urine and indigenous plant leaf extracts on feeding behaviour of 10 day-old larvae of Spilarctia obliqua (Walker) was studied under laboratory conditions at Pantnagar. Castor leaves treated with lantana, and citrus extracts and cow urine (5%) were significantly consumed more. The consumption of leaves was the minimum in neem (10%) followed by eucalyptus (10%). The antifeeding activity was 64.37 per cent and the feeding inhibition was 43.46 per cent when neem (10%) treated leaves were provided. The antifeedant activity was dose-dependent; however no mortality was recorded within 24-hour period. The antifeedant activity in a decreasing order for the treatments was neem > eucalyptus > tulsi > parthenium > taratej > bichhu grass > bhang > cow urine > citrus > lantana.