Abstract The sweetpotato whitefly, Bemisia tabaci MEAM1 Gennadius, is a global pest of tomato, transmitting Tomato yellow leaf curl virus (TYLCV). Management of B. tabaci is challenging in part because of its ability to develop resistance to insecticides. Biopesticides include materials that control B. tabaci via mechanisms that do not select for resistance. Field experiments were conducted in the spring and fall of 2016 and 2017 at the University of Florida's Gulf Coast Research and Education Center in west central Florida to compare biopesticides to conventional insecticides for management of B. tabaci and TYLCV. Insecticide rotations were designed in part around the concept that conventional insecticide programs should group modes of action according to 5-wk treatment intervals, corresponding to an estimated 5-wk generation time for the pest. In 2016, when tomato was treated during the first 5-wk treatment interval with either biopesticides or neonicotinoid insecticides, insecticidal soap contributed to a reduction in whitefly egg numbers and percentageTYLCV that was comparable to results achieved with dinotefuran. In contrast, egg numbers and virus incidence in plants treated with kaolin clay tended to be numerically higher than the untreated control. In spring 2017, comparisons of biopesticides and conventional ovicides/nymphicides during the second 5-wk treatment interval showed that biopesticides can provide comparable reduction in nymph numbers to conventional insecticides. While data from these trials confirm that biopesticides can reduce numbers of whitefly eggs and nymphs, they indicate that season-long programs of the biopesticides evaluated may not reduce transmission of TYLCV below economically acceptable levels.

中文翻译：

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用于管理烟粉虱 MEAM1（半翅目：粉虱科）和番茄黄叶卷曲病毒的生物农药

摘要 甘薯粉虱Bemisia tabaci MEAM1 Gennadius 是一种全球性的番茄害虫，传播番茄黄叶卷曲病毒(TYLCV)。烟粉虱的管理具有挑战性，部分原因是它能够产生对杀虫剂的抗性。生物农药包括通过不选择抗性的机制控制烟粉虱的材料。2016 年春季和秋季和 2017 年在佛罗里达大学位于佛罗里达州中西部的墨西哥湾沿岸研究和教育中心进行了田间试验，以比较生物农药与常规杀虫剂对烟粉虱和 TYLCV 的管理。杀虫剂轮换的部分设计理念是，传统杀虫剂计划应根据 5 周的处理间隔对作用模式进行分组，对应于该害虫的估计 5 周世代时间。2016 年，在第一个 5 周处理间隔期间用生物农药或新烟碱类杀虫剂处理番茄时，杀虫皂有助于减少粉虱卵数量和百分比 TYLCV，与使用呋虫胺所获得的结果相当。相比之下，用高岭土处理的植物中的卵数和病毒发生率在数值上往往高于未处理的对照。2017 年春季，在第二个 5 周治疗间隔期间对生物杀虫剂和传统杀卵剂/杀虫剂的比较表明，生物杀虫剂可以提供与传统杀虫剂相当的若虫数量减少。虽然这些试验的数据证实生物农药可以减少粉虱卵和若虫的数量，