Raguraman, S., & Premalatha, K. 2006 Field evaluation of methomyl against mealy bug, Maconellicoccus hirsutus (Green) and predatory coccinellid, Cryptolaemus montrouzieri Mulsant in grapes.. Pesticide Research Journal 18(1): 28-30.

Notes: Bio-efficacy experiments conducted in two concurrent trials from December to April and April to August indicate that methomyl (Lannate(R) 40 SP) at 500-800 g ai ha(-1) was effective in containing the populations of mealy bug, Maconellicoccus hirsutus on grapes. Methomyl 300-600 g ai ha(-1) registered higher population of predatory coccinellids than other treatments in both the trials; however, it was not comparable with untreated check. But better recolonization of coccinellids was noticed in methomyl treatments than in dimethoate. Methomyl at 500-800 g ai ha(-1) recorded the maximum fruit yield (14-17.5 t ha-1), which were superior to other treatments including methomyl 300 g and 400 g ai ha(-1) and dimethoate 300 g ai ha(-1). The methomyl treatments at 500, 600, 700 and 800 g ai ha(-1) gave higher returns in grapevine cultivation with cost-benefit ratios of 1:14.8, 1:16.5, 1:16.6 and 1: 16.5, respectively, when compared to dimethoate application and untreated check.