Journal of Economic Entomology (2014) 107, 1828-1838

Ri-Zhao Chen, Michael G. Klein, Cheng-Fa Sheng, Qi-Yun Li, Yu Li, Lan-Bing Li and Xing Hung (2014)
Mating disruption or mass trapping, compared with chemical insecticides, for suppression of Chilo suppressalis (Lepidoptera: Crambidae) in northeastern China
Journal of Economic Entomology 107 (5), 1828-1838
Abstract: Asiatic rice borer, Chilo suppressalis (Walker), larvae cause extensive crop losses worldwide. Because chemical control is problematic, and sex pheromone applications are a valuable management tactic in China, judicious timing of a minimal density of pheromone dispensers is important in developing a cost-effective C. suppressalis IPM program. During June-October in 2011, 20, 30, 40, and 50 dispensers per hectare for mass trapping, and 200, 300, 400, and 500 dispensers per hectare for mating disruption were placed in northeastern China rice fields. Based on those results, only the two highest mass trapping densities were used in 2012-2013. The 40, 50, and 500 dispenser densities reduced egg masses to <2.0 per 100 tillers, compared with >9.5 in the insecticide-treated plots in 2011-2013. The reduced oviposition resulted in > 85% reduction of larval damage, which was comparable with the currently used insecticides, dimethoate and deltamethrin (0.35 kg/ha), which gave no egg reduction, but ~80 and 89% reduction in larval damage. The 40 and 500 densities are recommended to Chinese rice farmers for mass trapping and mating disruption programs, respectively.
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Full text of article
Database assignments for author(s): Michael G. Klein, Ri-Zhao Chen

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Chilo suppressalis	Rice (Oryza)	China (NE)