PDF(Pubmed)
Abstract：
Chilli thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) has emerged as a severe invasive pest of strawberry Fragaria × ananassa Duchesne in the United States. The objective of this study was to assess the field efficacy of a biopesticide and thrips predator, Amblyseius swirskii Athias-Henriot for S. dorsalis management in field grown strawberry compared to synthetic insecticide applications that are current industry standard (spinetoram) conducted at UF/IFAS GCREC, FL during 2021-2022 and 2022-2023 in a 2-year field study. The following treatments were applied in the field: (1) biopesticide, capsicum oleoresin extract + garlic oil + canola oil application at maximum label rate; (2) predatory mite of thrips, A. swirskii released at 30 predators per plot; (3) spinetoram applied at maximum label rate; and (4) biopesticide applied 24 h before release of A. swirskii. A control plot with no insecticide or predatory mite releases was maintained. Results show that the capsicum extract can be used for management of S. dorsalis, especially during the latter stages of strawberry field season when resistance to spinetoram is high. The field performance of A. swirskii was variable and extensive research is needed to highlight factors affecting field performance of predatory mites for thrips management.
摘要：
辣椒蓟马,sirtopthripsdorsalisHood（Thysanoptera：Thripidae）已成为美国草莓Fragaria×ananassaDuchesne的一种严重入侵性害虫。这项研究的目的是评估生物农药和蓟马捕食者的田间功效，AmblyseiusswirskiiAthias-Henriot用于田间种植的草莓中的S.dorsalis管理，与在UF/IFASGCREC进行的当前行业标准（spinetoram）的合成杀虫剂应用相比，FL在2021-2022年和2022-2023年进行了为期2年的实地研究。在该领域应用了以下处理：（1）生物农药，辣椒油树脂提取物+大蒜油+菜籽油以最大标签率施用;(2)蓟马的捕食螨,旋流杆菌在每个地块30个捕食者处释放；（3）以最大标签率施用spinetoram；（4）在旋流杆菌释放前24小时施用生物农药。维持了没有杀虫剂或掠食性螨释放的对照地块。结果表明，辣椒提取物可用于管理背藻，特别是在草莓田季节的后期，对spinetoram的抵抗力很高。旋流虫的田间表现是可变的，需要进行广泛的研究以突出影响捕食性螨在蓟马管理中的田间表现的因素。
