سنتز شده داخلي با نوع وارداتي آن در شرايط مزرعه اي CHILO SUPPRESSALIS WLK. مقايسه ميزان جلب كنندگي فرمون جنسي پروانه ساقه خوار نواري برنج

Comparison of the attractiveness between locally-made sex pheromone and imported one in the Chilo suppressalis Wlk. under field condition

The attractiveness potential of locally-made sex pheromone of striped stem borer, Chilo suppressalis Wlk. (SSB), consisting of (Z)-9-hexadecenal, (Z)-11-hexadecenal, and (Z)-13-octadecenal (in the ratio 1:10:1) was compared with imported one. Doses of o.5, 1 and 2 mg of the pheromones were used in sticky traps in rice fields of Rasht and Sowmaea-sera county during 2001-2002. Analysis of variance showed that there were significant differences between treatments at the 1% level. Mean comparison of treatments at different locations, and generations showed the best at 0.5 mg dose. Also, changing sex pheromone rubber septa at different times showed best results on 0.5 mg dose. The results showed that the efficiency of the sex pheromone decreased significantly with increasing storage period and maintenance condition. Using fresh pheromones in a 20-day interval are suggested for monitoring and forecasting studies of the stem borerʹs population. Therefore, considering good number of moth catches and easier and cheaper production of locally-made pheromone compared with the imported one it could be a useful component of the pest monitoring and control in integrated pest management(IPM) program.