EFFECT OF ABIOTIC FACTORS ON SEASONAL INCIDENCE OF GRAM POD BORER, HELICOVERPA ARMIGERA (HUBNER) IN GRAM
Department of Entomology, Rajasthan College of Agriculture (MPUAT) Udaipur
G. CHHANGANI, A. VYAS, M.K.MAHLA, A. MORDIA, M.K.TALI AND B. SINGH
The present investigation was conducted at the Instructional Farm, Rajasthan College of Agriculture, Udaipur during rabi, 2017-18. Gram variety, ONG-1581 was sown to study the seasonal incidence of gram pod borer. The maximum pod borer population (4.32 larvae per meter row) was recorded during 3rd and 4th week of December (50th and 5l SMW); whereas, minimum pod borer (0.28 larvae per meter row) was recorded during 5th week of November (48th SMW). As there was no significant variation in the mean atmospheric temperature therefore, it had no significant effect on larval population in any treatment. Pod borer population had significant positive correlation (r= 0.59) with mean relative humidity during the crop season; whereas, sunshine exhibited a significant negative correlation (r= -0.62) with the larval population.