Iinsecticidal activity of tarragon essential oils and chemical pesticides reduced doses integration against green peach aphid

The green peach aphid or spinach aphid is one of the major pests found in various agricultural crops. Toevaluate the effect of chemical and biological pesticides, the green peach aphid was collected from the spinach field in Miyaneh city, Iran and cultivated in greenhouse conditions. Tarragon essential oilswere extracted by Clevenger apparatus. The pesticidal effect of dimethoate, imidacloprid, pymetrozine, acetamiprid and primicarb in recommendedand , , , reduced doses in separate and combined with 62 ppm of tarragon essential oilsin 2to 12 hours after treatment in greenhouse condition was investigated. FifteenmL of essential oils extracted from 1 kg of plant dry material.All applied insecticidal treatments, tarragon essential oils and combination of reduced doses of chemical insecticides with tarragon essential oils were lethal against green peach aphid. There weren’t any significant differences between the lethal effects of applied chemical insecticides regarding the letality of green peach aphid.The concentration of 62 ppm of tarragon essential oilswas able to compete with the dose ofof chemicals recommended doseinlethal percentage of green peach aphid. The combination of recommended dose with tarragon essential oilsshowed acceptable results for controlling the green peach aphid and was as effective as the recommended dose; therefore, it can be recommended as a safeproducttocontrolthis aphid.