تأثیر سموم سبز پالیزین و تنداکسیر به همراه روغن سیترال و بدون آن روی شته سبز پنبهAphis gossypii در شرایط آزمایشگاهی

In the last decade, the use of plant-based compounds and they have less destructive effects on the environment has become increasingly important in the intergrated pest management.one of the most important aphids is the green aphid, which attacks a wide range of crops. In order to control the Aphis gossypii, herbal insecticide were used with palazin(Coconut oil soap 65% Sc) and Tandexir( insecticide containing processed extract of garlic and red paper Ec 80%)( that both of them produced by kimia sabz avar company in iran) with and without citral oil. The aphids was rarening on a soybean bush in a breeding room under laboratory conditions (Temperature 27degrees centigrade and relative humidity 70%,light period 14 hours of brightness and 10 hours darkness). For bioassay, leaf dipping method was used in Palizin and Tondexir solution and the infected leaves were placed within Petri dish and finally 15 nymph was released leaves. After 24 hours, percentage of mortality nymph was measured. The LC50 was determined with using the POLO-PC software and a significant difference was evaluated in the treatments. The results showed that the highest insecticidal effect was associated to Palizin treatment with Citral oil (LC50 was calculated 357/13±32/79 ppm) and the least insecticidal effect related to(LC50 was calculated 654/27± 53/41 ppm) In addition, the use of oils with these insecticide in all treatments resulted in a decrease in the amount of insecticide consumption and increased their effectiveness. Therefore, in order to control this nymph of aphid more effectively, the insecticides mentioned above should be used with oil .