背景:番茄赤褐色螨,杜松子酒,是全球范围内主要的害虫侵染番茄作物,只有很少的控制方法可用。目前,没有商业化的有益生物被证明是害虫的有效生物防治剂。由于迫切需要开发合成杀虫剂的替代品,我们评估了iolinid螨的疗效,Pronematus普遍存在,与在温室中重复实验中的治愈性治疗相比,作为预防白蚁的方法。
结果:预建立后,提供香茅花粉。接着是白蚁的侵扰,与对照植物相比,捕食者能够将害虫种群减少98%。可能是由于缺乏食物和高温,在这个季节里,泛素杆菌的数量减少了,所以蓝藻种群增加了,随着作物的损害。硫磺处理可以阻止蓝藻的进展,但是他们的人口水平仍然很高。
结论:Pronematusubiquitus具有防止番茄赤褐色螨建立的巨大潜力。即使治疗会影响害虫螨,优选使用预防方法,因为此类杀虫剂/杀螨剂对有益物质有害,并在症状出现后使用,当害虫压力已经很高时。尽管需要在整个季节优化捕食者的管理,P.泛化证明能够在番茄植物上成功建立。本文受版权保护。保留所有权利。
BACKGROUND: The tomato russet mite, Aculops lycopersici, is a major worldwide pest infesting tomato crops for which only few control methods are available. At present, no commercialized beneficial organism has proven to be an effective biological control agent of the pest. As there is a strong need to develop alternatives to synthetic insecticides, we assessed the efficacy of an iolinid mite, Pronematus ubiquitus, as a preventive method against A. lycopersici in comparison with a curative treatment in a replicated experiment in the greenhouse.
RESULTS: After pre-establishment of P. ubiquitus supplied with cattail pollen, followed by infestation of A. lycopersici, the predator was able to reduce pest populations by 98% as compared with control plants. Probably due to lack of food and high temperature, the number of P. ubiquitus decreased during the season and so the Eriophyid population rose, along with crop damage. The sulphur treatment could stop the progress of A. lycopersici, but their population levels remained high.
CONCLUSIONS: Pronematus ubiquitus has great potential to prevent the establishment of the tomato russet mite. Even if a curative treatment affects the pest mite, the use of a preventive method is preferable as such insecticides/acaricides are harmful for beneficials and are applied after symptom appearance, when the pest pressure is already high. Despite the need to optimise management of the predator throughout the season, P. ubiquitus proved to be able to establish successfully on tomato plants. © 2023 Society of Chemical Industry.