Efficacy of Different Acaricides Against Acid Lime Mite Schizotetranychus baltazari Rimando, Predatory Mite and Grading of Fruits
A study on efficacy of synthetic acaricides and biorationals against acid lime mite Schizotetranychus baltazari rimando, its predatory mite and grading of fruits has been carried out. that the results obtained show that spiromesifen 240 SC, difenthiuron 50 SC and hexythiazox 5.45ECwere highly effective for decreasing the number of mites followed by abamectin 1.9EC, propargite 57% EC and fenpyroximate 5 SC. Highest net profit was recorded from spiromesifen 240 SC, difenthiuron 50 SC and hexythiazox 5.45ECwith 331860, 328928 and 323105 rupees per ha per year respectively. Hirsutella thomsonii, Verticellium leccanii and neemark sprayed treatment showed higher number of predatory mites after 15 days from the second spray (3.06, 2.82 and 2.20 mites, respectively) and minimum number were recorded in spiromecifen 240 SC (0.05/ leaf), hexythiazox 5.45 EC (0.19/ leaf). The lowest numbers of grade III fruits were recorded in difenthiuron 50 SC and spiromesifen 240 SC of 20.66, 24.00 respectively. Whereas highest numbers of grade III fruits were noticed in untreated control (128) and V. lecanii (121.33) followed by H. thompsonii (113.33), neeemark (105.00), sulphur 80 WP (84.66), dicofol 18.5 EC (79.00) and ethion 50 EC (77.66).