Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in Grapevine
AbstractImproving natural pest control by promoting high densities of predatory mites (Acari: Phytoseiidae) is an effective way to prevent damage by pest mites (e.g., Eriophyidae, Tetranychidae) and other arthropod taxa that can cause serious damage to vineyards. Here, we investigate the influence of innovative management on predatory mite densities. We compare (i) full versus reduced fungicide applications and (ii) minimal pruning versus a traditional trellis pruning system in four fungus-resistant grapevine varieties. As predatory mites also feed on fungus mycelium, we assessed fungal infection of grapevine leaves in the experimental vineyard. Predatory mites were significantly more abundant in both minimal pruning and under reduced plant protection. Increases in predatory mites appeared to be independent of fungal infection, suggesting mostly direct effects of reduced fungicides and minimal pruning. In contrast to predatory mites, pest mites did not increase under innovative management. Thus, conditions for natural pest control are improved in fungus-resistant grapevines and under minimal pruning, which adds to other advantages such as environmental safety and reduced production cost. View Full-Text
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Pennington, T.; Kraus, C.; Alakina, E.; Entling, M.H.; Hoffmann, C. Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in Grapevine. Insects 2017, 8, 86.
Pennington T, Kraus C, Alakina E, Entling MH, Hoffmann C. Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in Grapevine. Insects. 2017; 8(3):86.Chicago/Turabian Style
Pennington, Theresa; Kraus, Christian; Alakina, Ekatarina; Entling, Martin H.; Hoffmann, Christoph. 2017. "Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in Grapevine." Insects 8, no. 3: 86.
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