Landscape simplification increases vineyard pest outbreaks and insecticide use

Daniel Paredes, Jay Rosenheim, Rebecca Chaplin-Kramer, Silvia Winter & Daniel Karp
Diversifying agricultural landscapes may mitigate biodiversity declines and improve pest management. Yet landscapes are rarely managed to suppress pests, in part because researchers seldom measure key variables related to pest outbreaks and insecticides that drive management decisions. We used a 13-year government database to analyze landscape effects on European grapevine moth (Lobesia botrana) outbreaks and insecticides across ~400 Spanish vineyards. At harvest, we found pest outbreaks increased four-fold in simplified, vineyard-dominated landscapes compared to complex...
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