标题：Comparative management of Chilo suppressalis (Walker) (Lepidoptera: Crambidae) by convenient pesticides and non-chemical practices in a double rice cropping system
出版社：International Academy of Ecology and Environmental Sciences
摘要：The inclination of rice growers towards double cropping system in north of Iran has raised new concerns aboutthe excessive release of broad-spectrum pesticides, particularly organophosphates, in the environment. In thisstudy, the efficiency of three insecticides and an integrated pest management (IPM) program for managementof the striped rice stem borer, Chilo suppressalis (Walker) (Lep: Crambidae), in double cropping system wasinvestigated under field condition. According to the results, one accurate application of hexaflumuron EC 10%(1.5 L/ha) or diazinon EC 60% (1.5 L/ha) for each generation of the pest resulted in significant reduction indead heart and white head damage and increase in yield performance when compared with one application offipronil G 0.2%, diazinon G 10% and diazinon EC 60% + diazinon G 10% as well as two application ofdiazinon EC 60% + diazinon G 10%. Additionally, considerable effect of IPM programs (mechanical, physical,and biological practices) on suppression of pest damage and improvement of yield performance was alsoobserved. Given the environmental problems associated with excessive application of diazinon and fipronil,hexaflumuron, as an insect growth regulator with specific mode of action, can be efficiently integrated withother non-chemical methods for successful management of Ch. suppressalis in double cropping systems.
关键词：dead heart; Chilo suppressalis; double rice cropping; integrated pest management; white head.
