کارایی حشره کش لامبدا سای هالوترین روی سن های زیان آور پسته در شرایط صحرایی

Pistachio bugs (including Brachynema spp, Acrosternum sp & Lygeaus panderus), is the most important pest of pistachio orchards in Iran to reduce the quantity and quality of the yield economically. Hence, gardeners use different insecticides each year to control pest. In the present study, with a view to studying new chemical insecticides, the application of two commerical formulations of Lambda Cyhalothrin insecticide (includings Lamatrin®-CS10%, 200 and 250 ml per 1000 liter water; and Heflambda®-CS5%, 400 and 500 ml per 1000 liter water), Thiametoxam+Lambda Cyhalothrin (Eforia® SC 24.7%, 300 ml per 1000 liter water), Fenitrothion (Sumithion® EC50%, 1500 ml per 1000 liter water) and control (water spray) were tested in the fields of Kerman, Kashmar and Yazd regions, during 2019. The research was conducted in a randomized complete block design with 7 treatments and 4 replications. In order to evaluate the efficiency of chemicals, the number of seeds of pistachio damaged by bugs and the number of nymphs and imago were counted and compared 1 day before spraying and 3, 7, 14 and 21 days after spraying. Based on the field studies, the percentage number of seeds of pistachio damaged, within 21 days after application, in lamatrin (250 ml per 1000 liter water), heflambda (500 ml per 1000 liter water), eforia, fenitrothion and control treatments were recorded, 6.9, 5.1, 7.1, 11.9 and 31.5%, respectively. Also, the mean efficacy (21 days after application) in lamatrin (250 ml per 1000 liter water), heflambda (500 ml per 1000 liter water), eforia and fenitrothion were 73.8, 81.2, 50.2 and 41.9%, respectively. Therefore, Lambda insecticide is an effective and can be used in integrated pest management program, to control of pistachio bugs.