Evaluation of insecticides for control of Chlumetia transversa (Walker) in mango trees.
Chen YongSen, Huang GuoDi, Mo YongLong, Zhou JunAn, Zhao Ying, Liang HongHe, Pu JinJi
Author Affiliation: Guangxi Subtropical Crop Research Institute, Nanning 530001, China.
Guangxi Agricultural Sciences 40 : 1312-1314
Abstract : In order to screen for suitable insecticides in relation to high-efficiency and low toxicity to control Chlumetia transversa (Walker) in pollution-free mango garden, four insecticides viz., 80% dichlorvos EC (dilution of 1250), 47.5% chlorpyrifos EC (dilution of 1000), 2.5% deltamethrin EC (dilution of 2500), and 2% abamectin EC (dilution of 2000) were applied on mango trees during April to May, 2009. The results showed that when young branches of mongo trees were 2-5 cm in length, spraying 2.5% deltamethrin EC for three times could effectively control Chlumetia transversa (Walker) with 87.0% of control efficiency, it was also found to be non toxic to mongo trees, and it can be recommended for control of the C. transversa for sustainable mongo production. The control effects of 2% abamectin EC at a dilution of 2000 were also better and may be alternatively used for controlling C. transversa (Walker). The other two insecticides i.e., 80% dichlorvos EC and 47.5% chlorpyrifos EC had worse effects on controlling C. transversa (Walker), it might be due to the development of resistance in pests against these insecticides on account of longer repeated applications.