园艺油热疗对梨木虱抑制效果的研究

M. Jacob Schrader , Gajanan S. Kothawade , Basavaraj R. Amogi , Elizabeth Beers , Gwen-Alyn Hoheisel , Lav R. Khot
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引用次数: 0

摘要

本研究评估了四种市售园艺油在加热和非加热喷雾中处理后冬梨木虱的死亡率。目的不是比较油产品的功效,而是验证先前关于使用各种油的加热油喷雾(HO)功效的研究报告。此外,本研究旨在通过对热水喷雾(HW)处理效果的额外调查来验证加热油的熏蒸效果。四种油产品- Cinnerate®,Thyme Guard®,pure Green生物农药和PureSpray™Green -在最低标签推荐浓度下进行测试。对每种油品进行以下处理:1)未处理对照,2)HW喷雾,3)未加热油(UO)喷雾,4)HO喷雾。每个处理重复5次,以生物试验的形式对冬季成梨木虱进行处理。在距离目标生物0.3和0.6 m处使用单空心锥形喷嘴(D8DC45, VMD = 165 μm)进行喷雾。在喷洒后24 小时评估死亡率。无论油品如何,当施用于距离木虱0.3 m处时,HO和HW的死亡率响应无显著差异,但两者的死亡率均显著高于对照。在距离喷口0.6 m处,HW未能增加相对于对照组的木虱死亡率。然而,与HW处理相比,纯绿色生物农药显著增加了木虱的死亡率,但加热这种特定的油并没有改变其功效。同样,在0.6 m时,HO和UO的剩余农药产品也没有表现出显著差异。总的来说,喷雾距离似乎是成功加热喷雾的限制因素,并且被测试的油在加热后并没有提高其功效。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Efficacy of horticultural oil(s) thermotherapy towards pear psylla suppression
This study evaluated mortality of winterform pear psylla after treatment with four commercially available horticultural oils delivered in both heated and non-heated sprays. The aim was not to compare efficacy of the oil products, rather validate previous studies reported on efficacy of heated oil spray (HO) using various oils. Furthermore, this study aimed to validate fumigation effects of heating oils through additional investigation of the efficacy of a heated water spray (HW) treatment. Four oil products – Cinnerate®, Thyme Guard®, Purely Green Bio-Pesticide and PureSpray™ Green – were tested at minimum label recommended concentrations. For each oil product, the following treatments were conducted: 1) untreated control, 2) HW spray, 3) unheated oil (UO) spray, and 4) HO spray. Each treatment was replicated 5 times against winterform adult pear psylla in a bioassay format. The spray was applied using a single hollow cone nozzle (D8DC45, VMD = 165 μm) at 0.3 and 0.6 m from the target organism. Mortality was evaluated at 24 hours after spray. Regardless of oil product, when applied at 0.3 m from the psylla, the mortality response for HO was not different from HW, but both had significantly higher mortality than the control. At 0.6 m from the nozzle, HW failed to increase psylla mortality relative to the control. However, Purely Green Bio-Pesticide, significantly increased psylla mortality relative to the HW treatment, but heating this specific oil did not alter its efficacy. Similarly, remaining pesticide products failed to show significant difference between HO and UO applications at 0.6 m. Overall, spray distance appears to be a limiting factor for successful delivery of a heated spray, and that tested oils did not improve their efficacy with heating.
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CiteScore
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