Evaluation of Mak All Season Horticulture Mineral Oil against Leaf miner, Phyllocnistis citrella Stainton and Asian Citrus psyllid, Diaphorina citri Kuwayama

摘要

Evaluation of Mak All Season Horticulture Mineral Oil (HMO) at different doses (0.1, 0.5, 1.0, 1.5, 2.0 and 2.5%) was conducted against citrus leaf miner, Phyllocnistis citrella and Asian Citrus Psyllid (ACP), Diaphorina citri. Foliar application of imidacloprid @ 0.009% recorded significantly less % infestation of leaf miner and ACP than Mak All Season HMO irrespective of number of days after treatment and year. Per cent leaf miner infestation was significantly less at doses 1.5 %, 2.0 % and 2.5% (%infestation: 26.1-62.2% at 3 days after treatment (DAT); 20.1-38.8 % at 7 DAT; 19.1 -30.0 % at 11 DAT), than 0.1%, 0.5 % and 1.0 % (% infestation: 33.9- 79.0% at 3 DAT; 28.2-50.9% at 7 DAT; 27 - 41.6% at 11 DAT) at 3,7 and 11 DAT. ACP population was significantly less at doses 2.0 % and 2.5% (population / 5 cm twig: 16.6- 27.3 at 3 DAT; 13.8- 19.6 at 7 DAT) than 1.5 %, 1.0 %, 0.5 %. The results showed that Mak All Season HMO @ 1.5% against citrus leaf miner up to 11 days, @ 2.0% against psylla up to 7days was found effective. As citrus leaf-miner and ACP occurred together on citrus flushes, a spraying schedule using Mak All Season HMO @ 1.5 - 2.0% simultaneously controlled both the pests.