Yield Reduction in ‘Tahiti‘ Lime from Panonychus Citri Feeding Injury Following Different Pesticide Treatment Regimes and Impact on the Associated Predacious Mites

摘要: A series of experiments was initiated on ‘Tahiti’ lime trees to assess possible involvement in yield reduction by one or more species thrips, especially Frankliniella bispinosa (Morgan) and F. kelliae Sakimura (Thysanoptera: Thripidae). Different pesticides were applied ensure adequate coverage flowers maintain effective thrips control. Outbreaks spider mites anticipated because the used frequency application. Therefore, population dynamics citrus red mite, Panonychus citri (McGregor) (Acari: Tetranychidae) predacious Typhlodromalus peregrinus (Muma) Phytoseiidae) Agistemus floridanus Gonzalez Stigmaeidae) monitored four pesticide treatment regimes during flowering lime, Citrus latifolia Tanaka south Florida. Yield significantly reduced 41, 31, 28 17% relative untreated Elimination selected resulted higher sustained populations P. treated compared those untreated. The differences densities both mite its key predators. Depending upon regime application date(s), duration magnitude disruption significant yield. that averaged 5.2 per leaf January–February, 4.3 January–March, 3.9 January– April contributed substantially feeding injury most common collected this study (80.4%) followed A. with 15.7%.