Effect of some chemical and biological insecticides on European corn borer control in Moghan region

Subject Areas : Agroecology Journal

Mozhgan Molaei ¹ , Soleiman Jamshidi ²

1 - Department of Plant Protection, Miyaneh Branch, Islamic Azad University, Miyaneh, Iran
2 - Department of Plant Protection, Miyaneh Branch, Islamic Azad University, Miyaneh, Iran

Received: 2017-07-15 Accepted : 2018-06-11 Published : 2018-05-22

Keywords: stalk worm,

Abstract :

To evaluate some chemical and biological insecticides impact on European corn borer, an experiment was carried out based on a randomized complete block design in three replications in Moghan plain, Iran.  The pest flight peak was determined by standard pheromone delta-trap considered as insecticides application time including indoxacarb, deltamethrin, diazinon, fanvalerate, alpha-cypermethrin+ teflubenzuron and B.t. as biological insecticide containing Bacillus thurengiensis using a dorsal-swab sprayer. Pest mortality percentage and stem hole number in the first and second generation were recorded 3 and 7 days after treatment application. In harvesting time, yield and yield component including plant height, thousand kernel number, seed number per row and biological yield were measured. Despite significant difference of B.t. insecticide on pest losses, it could not be effect on corn yield and yield components. The effect of chemical insecticide on pest mortality and stem hole number was partially equal; however, the weakest one was diazinon in this regard. Also, alpha-cypermethrin+ teflubenzuron and indoxacarb had better improving effect on corn yield and yield component than others. On the whole, alpha-cypermethrin+ teflubenzuron application is recommended to combat with European corn borer in corn farms in Maghan plain region.

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