FIELD EVALUATION OF ALPHACYPERMETHRIN (10% SC) AGAINST INSECT PESTS OF OKRA AND THEIR PHYTOTOXIC EFFECTS ON PLANTS
Department of Entomology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur–313 001
NAROTTAM KUMAR MEENA AND ASHOK KUMAR
Field trials were conducted for testing the efficacy of new formulation of synthetic pyrethroid (alphacypermethrin
10% SC) for pest management in okra during kharif 2005–06. Alphacypermethrin 10% SC @ 35 and 30 g a.i./ha proved to be highly effective. The treatment alphacypermethrin 10% SC @ 15 g a.i./ha proved least effective. The maximum yield of marketable okra fruits (60.00 q/ha) was obtained in the plots treated with alphacypermethrin 10% SC @ 35 g a.i. /ha, whereas minimum (28.25q/ha) in alphacypermethrin 10% SC @ 15 g a.i./ha. No phytotoxic symptoms were observed at lower doses of alphacypermethrin 10% SC @ 25 to 35 g a.i./ha. However, at higher doses viz., 60 and 120 g. a.i./ha showed symptoms as few lesions on leaves.