تعیین زمان مبارزه با شته های کلزا

In the recent years, increase of planted area of rape seed, in khuzestan province caused serious damage the aphids (Lipaphis erysimi and Brevicoryne barassicae) to rape seed fields. This experiment was conducated to aim determination the best control time and aphidcide in IPM model in split plot design with 3 main plot (aphidcides including Tracer, Gaucho and control) and 4 sub plot (control times including bunch, primary of flowering, middle of flowering and primary and middle of flowering) and 3 replications in Behbahan Agricultural Research Station in 2007- 2009. The Plants were selected randomly from each plots and the data of aphid populations were recorded during one day before and 2, 5 and 10 days after spraying. After harvesting length of main flowering stem, the number of capsule in main stem, the number of seed in capsule, weight 1000 seed and yield were measured and the averages were compared with Duncan`s test. The Results showed that the aphid population in Tracer treatments and control times were minimum and in Gaucho treatments and control times were maximum during 2008-2009. Therefore application of Tracer aphidcide in primary of flowering recommended as the best teeatment.

Keywords:

منداب , آفیدوییده آ , مدیریت تلفیقی آفات , حشره کش ها