EVALUATION OF SOME INSECTICIDES AGAINST MAJOR INSECT PESTS INFESTING SOYBEAN
Agricultural Research Station, Maharana Pratap University of Agriculture and Technology, Udaipur, Ummedganj, PB#7, Kota – 324001 (Rajasthan)
H.R. CHAUDHARY AND N.N. TRIPATHI
The efficacy of some insectides against major insect–pests on soybean was evaluated in field conditions. The results showed that the minimum larval population of green semilooper (0.55) and girdle beetle infestation (12.49 per cent) was recorded in triazophos. It was closely followed by quinalphos and chlorpyriphos with 0.76 and 0.86 larvae/metre row length and 12.6 and 14.35 per cent infestation of green semilooper and girdle beetle, respectively. The highest seed yield (1718Kg/ha) and net return (Rs. 5865) were recorded with quinalphos followed by triazophos (Rs. 4936) whereas, maximum ICBR (7.26) was obtained in chlorpyriphos followed by triazophos (7.25).