بررسی کارایی دو فرمولاسیون حشره‌کش لامبدا سای هالوترین (جایام پلاس CS 4.9% و لاماترین (CS 10% در کنترل سن گندم Eurygaster integriceps (Hem.: Scutelleridae)

In wheat fields sunn pest, Eurygaster integriceps Puton is always a key pest due to its quantitative and qualitative damages to the strategic crop of wheat and the the highest spraying areas than other pests. In this research, in order to diversify the insecticides used in controlling this pest, the effect of two formulations of Lambda-cyhalothrin insecticide with commercial names of Jayam Plus (CS 4.9%) with a dose of 150 ml.ha-1 and Lamathrin (CS 10%) with a dose of 75 ml.ha-1 were studied to control adults and the second and third instar nymphs of sunn pest in comparison to Deltamethrin with commercial name of Deltaral (SC 2.5%) with a dose of 180 ml.ha-1, Fenitrothion with a dose of 1 L.ha-1 and Lambda-cyhalothrin with commercial names of Haf Lambda (SC 5%) with a dose of 150 ml.ha-1 and Karate zeon (CS 10%) with a dose of 75 ml.ha-1. The experiment was conducted as a randomized complete block design with three replications in three areas of Orumieh, Kordestan and Kermanshah in 2017. The effects of treatments on adults and the second and third instar nymphs of sunn pest were evaluated 3, 7 and 14 days after spraying. The average effect of Jayam Plus 150 ml.ha-1 and Lamathrin 75 ml.ha-1 at 14 days after treatment was evaluated 100% and 95.07-100% on adults, respectively. It was also 100% and 81.33-96.06% on the second and third instar nymphs of sunn pest, respectively. Damage rate to grain in Jayam Plus 150 ml.ha-1 and Lamathrin 75 ml.ha-1 treatments was 0.15-1.33% and 0.15-0.80%, respectively. In conclusion, two new insecticides of Lambda-cyhalothrin with commercial names of Jayam Plus (CS 4.9%) with a dose of 150 ml.ha-1 and Lamathrin (CS 10%) with a dose of 75 ml.ha-1 was acceptable to control sunn pest adults and nymphs and reduced the qualitative damage rate of the pest to wheat grains.