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Open AccessFeature PaperArticle

Responses of Crop Pests and Natural Enemies to Wildflower Borders Depends on Functional Group

1
Department of Biological Sciences, University of New Hampshire, Durham, NH 03824, USA
2
Department of Entomology, New York State Agricultural Experiment Station, Cornell University, Geneva, NY 14456, USA
3
Department of Entomology, Cornell University, Ithaca, NY 14853, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Zsofia Szendrei and Amanda Buchanan
Insects 2017, 8(3), 73; https://doi.org/10.3390/insects8030073
Received: 1 June 2017 / Revised: 12 July 2017 / Accepted: 20 July 2017 / Published: 25 July 2017
(This article belongs to the Special Issue Habitat Management in Agroecosystems)
Increased homogeneity of agricultural landscapes in the last century has led to a loss of biodiversity and ecosystem services. However, management practices such as wildflower borders offer supplementary resources to many beneficial arthropods. There is evidence that these borders can increase beneficial arthropod abundance, including natural enemies of many pests. However, this increase in local habitat diversity can also have effects on pest populations, and these effects are not well-studied. In this study, we investigated how wildflower borders affect both natural enemies and pests within an adjacent strawberry crop. Significantly more predators were captured in strawberry plantings with wildflower borders versus plantings without wildflowers, but this effect depended on sampling method. Overall, herbivore populations were lower in plots with a wildflower border; however, responses to wildflower borders varied across specific pest groups. Densities of Lygus lineolaris (Tarnished Plant Bug), a generalist pest, increased significantly in plots that had a border, while Stelidota geminata (Strawberry Sap Beetle) decreased in strawberry fields with a wildflower border. These results suggest that wildflower borders may support the control of some pest insects; however, if the pest is a generalist and can utilize the resources of the wildflower patch, their populations may increase within the crop. View Full-Text
Keywords: wildflower planting; pests; natural enemies; functional group wildflower planting; pests; natural enemies; functional group
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MDPI and ACS Style

McCabe, E.; Loeb, G.; Grab, H. Responses of Crop Pests and Natural Enemies to Wildflower Borders Depends on Functional Group. Insects 2017, 8, 73.

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