Effect of Phytopesticides on Sweetpotato Whitefly, Bemisia tabaci Gennadius

Abstract

Research was carried out to investigate the performance of extraction from botanicals on sweetpotato whitefly, Bemisia tabaci at the field of Patuakhali Science and Technology University (PSTU) during the period from May 2016 to April 2017. The experiments were laid out in RCBD with three replications for each treatment. Six treatments ie.T0 (control; 100% water), T1 (10% leaves extract of Polygonum hydropiper L.), T2 (10% flowers extract of Azadirachta indica), T3 (10% flowers extract of Swietenia macrophylla L.), T4 (10% leaves and flowers extract of Heliotropium indicum) and T5 (10% bulb extract of Allium sativum L.) were used on whitefly to determine the performance of botanicals. Water was used as the solvent for extracting from the plant parts using a centrifuge. The highest mortality rate of whiteflies were observed in T1 (77.66%), followed by T2 (66.66%) and lowest mortality rate were observed in T0 (2.33%) on tomato. In the same way, same treatments were applied on brinjal to test the mortality of whitefly. The highest mortality rate of whiteflies were observed in T1 (63.33%), followed by T2 (54.00%) and lowest mortality rate was found in T0 (6.00%) at 1% and 5% level of significance.