Combined nighttime ultraviolet B irradiation and phytoseiid mite application provide optimal control of the spider mite Tetranychus urticae on greenhouse strawberry plants

IF 3.8 1区农林科学 Q1 AGRONOMY Pest Management Science Pub Date : 2023-09-27 DOI:10.1002/ps.7798

Masaya Tanaka, Junya Yase, Takeshi Kanto, Masahiro Osakabe

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Abstract

BACKGROUND

Tetranychus urticae is a hard-to-control pest of greenhouse strawberry production. Nighttime ultraviolet B (UV-B) radiation using light reflection sheets (LRS) has been applied as a physical method to control T. urticae through direct ovicidal effects (the UV method). However, because strawberry leaves grow more densely, UV-B radiation fails to reach the lower leaf surfaces inhabited by spider mites; therefore, a complementary method is required. We propose the supplemental application of phytoseiid mites in greenhouse strawberry production. We evaluated the control effects of UV-B irradiation, phytoseiid mite application and their combined use. The effects of UV-B irradiation on the degree of overlap relative to the independent distributions (ω) between predators and prey were also analyzed.

RESULTS

The UV method alone maintained low T. urticae density levels from November to February; however, mite populations increased from March onward. Phytoseiid mite application in January and February without UV-B irradiation resulted in a temporary increase in spider mites in March and/or April. By contrast, combined application of the UV method and phytoseiid mites had a greater control effect during the strawberry growing season. The ω values were higher for the UV method compared with no UV-B irradiation, suggesting that UV-B irradiation increased phytoseiid mite foraging rates.

CONCLUSION

The release of phytoseiid mites compensated for the shortcomings of the UV method, and UV-B irradiation promoted predation by phytoseiid mites by increasing the behavioral numerical response. Consequently, combined application of UV-B irradiation and phytoseiid mites is optimal for T. urticae control in greenhouse strawberry production. © 2023 Society of Chemical Industry.

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夜间紫外线B照射和植螨联合应用对温室草莓上的二斑叶螨进行了最优控制。

背景：二斑叶螨是温室草莓生产中一种难以控制的害虫。使用光反射片（LRSs）的夜间紫外线B（UV-B）辐射已作为一种物理方法应用，通过直接杀卵作用（UV方法）来控制荨麻疹。然而，随着草莓叶片的生长，UV-B辐射无法到达蜘蛛螨居住的较低叶表面；因此，需要一种互补的方法。我们建议在温室草莓生产中补充应用植酸酶。我们评估了UV-B辐射、植螨应用及其联合使用的控制效果。还分析了UV-B辐射对捕食者和猎物之间相对于独立分布（ω）的重叠程度的影响。结果：从11月到2月，单独的紫外线方法保持了较低的荨麻疹密度水平；然而，从三月开始，螨的数量有所增加。在没有UV-B辐射的情况下，在1月和2月施用Phytoseid螨导致3月和/或4月蜘蛛螨数量暂时增加。相比之下，在草莓生长季节，紫外线法和植螨联合应用具有更高的防治效果。紫外线法的ω值高于未经紫外线-B照射的ω值，表明紫外线-B照射提高了植物链螨的觅食率。结论：释放植感螨弥补了紫外线方法的不足，UV-B辐射通过增加行为数值响应促进了植感螨的捕食。因此，在温室草莓生产中，UV-B辐射和植保螨联合应用是控制二斑螟的最佳方法。这篇文章受版权保护。保留所有权利。

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来源期刊

Pest Management Science 农林科学-昆虫学

CiteScore

7.90

自引率

9.80%

发文量

553

审稿时长

4.8 months

期刊介绍： Pest Management Science is the international journal of research and development in crop protection and pest control. Since its launch in 1970, the journal has become the premier forum for papers on the discovery, application, and impact on the environment of products and strategies designed for pest management. Published for SCI by John Wiley & Sons Ltd.