本研究旨在评估推荐剂量的两种七种农药喷雾对柑橘褐螨的影响,EuttranychusOrientalis及其捕食性螨的副作用,黄肌,漩涡神龙,2022年和2023年季节的野外条件下的persimilis(Acari:Phytosseiidae)。得到的结果表明,在2022年第1季和第2季喷雾后,所有测试的农药均实现了东方白蛾的高减少百分比在(82.1-90.0%)和(81.6-87.1%)之间,在2023赛季的第1次和第2次喷雾后,其范围在(84.9-88.7%)和(79.7-88.7%)之间。阿维菌素对柑橘棕螨的减少百分比最高,而Congest农药在2022年和2023年季节的两次喷雾后的降幅最低。至于测试农药对相关捕食性螨的副作用,在2022年第1次和第2次喷雾后,所有农药都是安全的。在2023赛季的第1次和第2次喷雾后,其范围在(15.3-29.1%)和(19.6-32.0%)之间。相反,吡虫啉对于在两个季节中的第一次和第二次喷雾后记录最高平均减少百分比的黄芩菌数是不安全的。此外,所有测试的杀虫剂都是安全的,在2022赛季记录的两个赛季的第一次和第二次喷雾减少(从10.9到28.1%)和(24.4到31.4%)之后,2023年赛季(19-38.9%)和(18.7-39.4%)。相反,吡虫啉是不安全的。在两个季节中,在第1次和第2次喷雾后,旋流杆菌数量下降幅度最大。至于,Ph.Persimiis数字,所有测试的杀虫剂都是安全的,在2022年第1季和第2季喷雾后,下降幅度在(17-33.8%)和(20.4-34.8%)之间,和(24.3-39%)和(20.2-28.9%)在2023赛季的第一次和第二次喷雾之后。在另一边,吡虫啉对Ph不安全。在两个季节的第一次和第二次喷雾后,persimiis数量下降幅度最大。本研究证明,所有测试的农药都对东方紫草高效有效,并且似乎对相关的捕食性螨具有安全和选择性,除了吡虫啉对所有测试的捕食性螨非常有害,可以得出结论,测试的杀虫剂,芬焦肟,己唑酮,充血,螺双氯芬,阿维菌素,和Chlofenapyr可用于柑橘园的东方大肠杆菌的病虫害综合治理(IPM)计划。
The present study has been conducted to evaluate the effect of two sprays of seven pesticides at recommended dose on citrus brown mite, Eutetranychus orientalis and the side effects on their predatory
mites, Euseius scutalis, Amblyseius swirskii, Phytoseiulus persimilis (Acari: Phytoseiidae) under field conditions at 2022 & 2023 seasons. The obtained results show that, all tested pesticides achieved high reduction % of E. orientalis ranged between (82.1-90.0%) and (81.6-87.1%) after the 1st and 2nd sprays of 2022 season, where it ranged between (84.9- 88.7%) and ( 79.7- 88.7%) after 1st and 2nd sprays of 2023 season. Abamectin recorded the highest reduction % against the citrus brown mite, whereas Congest pesticide recorded the lowest reduction % after the two sprays along 2022 & 2023 seasons. As for the side effects of tested pesticides on associated predatory
mites, all pesticides were safely for E. scutalis numbers recording decrease % between (18.4-28.6%) and (16.2 -26.1%) after the 1st and 2nd spray at 2022 season , where it ranged between (15.3- 29.1%) and (19.6-32.0%) after the 1st and 2nd sprays of 2023 season. On contrary, imidacloprid was unsafely for E. scutalis numbers recording the highest mean decrease % after 1st and 2nd sprays during the two seasons. Also, all tested pesticides were safely for A. swirskii numbers, after the 1st and 2nd sprays of the two seasons recording decrease (from 10.9 to 28.1%) & (24.4 to 31.4%) for the 2022 season, and (19-38.9%) & (18.7-39.4%) at 2023 season. On contrary, imidacloprid was unsafely for A. swirskii numbers recorded the highest decrease % after 1st and 2nd sprays during the two seasons. As for, Ph. Persimilis numbers, all tested pesticides were safely, where it recorded low decrease % ranged between (17-33.8%) & (20.4-34.8%) after the 1st and 2nd sprays of 2022 season, and (24.3-39%) & (20.2-28.9%) after the 1st and 2nd sprays of 2023 season. On the other side, imidacloprid was unsafely for Ph. persimilis numbers recording the highest decrease % after the 1st and 2nd sprays during the two seasons. The present study proved that all tested pesticides were high effective against E. orientalis and appeared to be safely and selective for associated predatory
mites except imidacloprid which was very harmful for all tested predatory
mites, and it could be concluded that the tested pesticides, Fenpyroximate, Hexythiazox , Congest , Spirodiclofen, Abamectin, and Chlorfenapyr could be used in the Integrated Pest Management (IPM) programs for E. orientalis at citrus orchards.