Suppression of Powdery Mildew and Two-Spotted Spider Mite by UV-B Radiation and Mulching Type of Strawberry Cultivation in the Greenhouse

Q4 Agricultural and Biological Sciences

Research in Plant Disease Pub Date : 2022-06-30 DOI:10.5423/rpd.2022.28.2.61

M. Nam, Hyun Sook Kim, I. Lee, Jeong-Hak Seo, Byung Joo Lee

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Abstract

Powdery mildew and two-spotted spider mite are detrimental to strawberry plants and are controlled with traditional pesticides. To accommodate consumer demand, eco-friendly methods of pest control are required. Strawberries were cultivated (in soil and in a hydroponic system) for two years, and ultraviolet B (UV-B) irradiation was used as an alternative pest control during the harvesting season. Three varieties were grown (Seolhyang, Kingsberry, and Durihyang), and four UV-B lamp/mulch (black, green, and light reflection sheet [LRS]) combinations were used during harvesting: UV-B+black or green mulch, UV-B+black or green+LRS, no UV-B+black or green, and no UV-B+black or green+LRS. In all varieties, powdery mildew was 65% more controlled when UV-B irradiation was used. The adult two-spotted spider mite density was lowest in the UV-B lamp+black or green+LRS treatments. Therefore, UV-B irradiation during the strawberry harvesting season could effectively control powdery mildew and two-spotted spider mite with little side effect on the plants.

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UV-B辐射和覆盖式温室草莓栽培对草莓白粉病和双斑蜘蛛螨的抑制作用

白粉病和双斑蜘蛛螨对草莓有害，可采用传统农药防治。为了满足消费者的需求，需要采用生态友好的虫害防治方法。草莓(在土壤和水培系统中)栽培了两年，在收获季节使用紫外线B (UV-B)照射作为替代害虫防治方法。种植了3个品种(雪香、王梅和duri香)，在收获期间使用4种UV-B灯/地膜(黑色、绿色和光反射片[LRS])组合:UV-B+黑色或绿色地膜，UV-B+黑色或绿色+LRS，不使用UV-B+黑色或绿色，不使用UV-B+黑色或绿色+LRS。在所有品种中，当使用UV-B照射时，白粉病的控制提高了65%。在UV-B灯+黑色或绿色+LRS处理下，成螨密度最低。因此，在草莓收获季节进行UV-B照射可以有效地防治白粉病和双斑蜘蛛螨，而且对植株的副作用很小。

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