Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in Grapevine

Improving 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 innova...

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Main Authors: Theresa Pennington, Christian Kraus, Ekatarina Alakina, Martin H. Entling, Christoph Hoffmann
Format: Article
Language:English
Published: MDPI AG 2017-08-01
Series:Insects
Subjects:
Online Access:https://www.mdpi.com/2075-4450/8/3/86
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author Theresa Pennington
Christian Kraus
Ekatarina Alakina
Martin H. Entling
Christoph Hoffmann
author_facet Theresa Pennington
Christian Kraus
Ekatarina Alakina
Martin H. Entling
Christoph Hoffmann
author_sort Theresa Pennington
collection DOAJ
description Improving 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.
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spelling doaj.art-9da8e258908048659b46bedb6948878b2022-12-22T02:16:14ZengMDPI AGInsects2075-44502017-08-01838610.3390/insects8030086insects8030086Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in GrapevineTheresa Pennington0Christian Kraus1Ekatarina Alakina2Martin H. Entling3Christoph Hoffmann4Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, GermanyJulius Kühn Institute, Federal Research Institute for Cultivated Plants, Institute for Plant Protection in Viticulture, Geilweilerhof, 76833 Siebeldingen, GermanyInstitute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, GermanyInstitute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, GermanyJulius Kühn Institute, Federal Research Institute for Cultivated Plants, Institute for Plant Protection in Viticulture, Geilweilerhof, 76833 Siebeldingen, GermanyImproving 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.https://www.mdpi.com/2075-4450/8/3/86viticulturebeneficial arthropodsTyphlodromus pyrifungicidefungus-resistant cultivarssustainable agricultureecosystem servicesnatural pest control
spellingShingle Theresa Pennington
Christian Kraus
Ekatarina Alakina
Martin H. Entling
Christoph Hoffmann
Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in Grapevine
Insects
viticulture
beneficial arthropods
Typhlodromus pyri
fungicide
fungus-resistant cultivars
sustainable agriculture
ecosystem services
natural pest control
title Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in Grapevine
title_full Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in Grapevine
title_fullStr Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in Grapevine
title_full_unstemmed Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in Grapevine
title_short Minimal Pruning and Reduced Plant Protection Promote Predatory Mites in Grapevine
title_sort minimal pruning and reduced plant protection promote predatory mites in grapevine
topic viticulture
beneficial arthropods
Typhlodromus pyri
fungicide
fungus-resistant cultivars
sustainable agriculture
ecosystem services
natural pest control
url https://www.mdpi.com/2075-4450/8/3/86
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