بررسی سمیت فن پروپاترین روی کنه های تارتن Tetranichus urticae در مزارع خربزه

Abstract

Melon is the important crop in the Torbat ejam, Taybad, Fariman and Khaf from Razavi Khorasan. More than 100,000 hectares melons have planted in these areas. Many insects were reported as serious pests on the melon, contain Myopardalis pardalina, Dacus ciliates, Epilichna chrysomelina, Acytopeus curvistorius and Tetarnychus urticae. In this research, toxicity of phenpropathrin against T.urticae was evaluated in the spring and winter 2018 at the farms of around Torbate jam. Final concentration was 0 (control), 500, 1000 and 1500 ppm. Spraying was done in the early morning and three replicate were done for every treatments. Results showed that population acari in the toxic treatments were significantly reduced in comparison to control. The amount of reduction was 52, 88 and 92 percent in the 500, 1000 and 1500 ppm, respectively. Also, there was significant difference between 500 with 1000 and 1500 ppm. Conclusion of current study is that the concentration of 1000 ppm of phenpropathrin is appropriate dose to recommendation for controlling of T.urticae in the melon farms.