Invitro studies on the management of whitefly Bemisia tabaci with Beauveria bassiana Latha Gopaldas Sneha*, Das S.B., Swathi P., Babu O. Giri, Teja Y. Gana Ram, Swathi B. Department of Entomology, Jawaharlal Nehru Krishi Vishwa Vidhyalaya, Jabalpur, 482004 *Email: snehagopaldas@gmail.com (corresponding author)
Abstract Bioassays were conducted with three strains of an entomopathogenic fungus Beauveria bassiana against third nymphal instar of Bemisia tabaci on soybean cultivar JS-335 under laboratory conditions at 25± 2°C, 70±10% RH, 13 hr photophase, at the Biocontrol Research and Production Centre, Department of Entomology, College of Agriculture, JNKVV, Jabalpur during 2016–2017. The study revealed that the B. bassiana strain-S3 was the most effective at 168 hr after treatment. The mortality at 1.72x109 spores/ml observed with very high, lower and very low upper fiducial limits (5.64x107 and 5.24x 10, respectively) followed by Strain-2 (4.32x108 and 5.20x 1018) and Strain-1 (1.40x109 and 1.34x 1014). Among the doses 1x1012 spores/ml recorded maximum mortality (60.00%) followed by 1x1010 spores/ml (46.67%) and 1x108spores/ml (38.89%). Top Keywords Beauveria bassiana, B. tabaci, bioassay, 3rd instar nymphs, strains, spore concentration, mortality response. Top |