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Ground Cover Management in Citrus Affects the Biological Control of Aphids

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URI
http://hdl.handle.net/20.500.11939/5311
DOI
10.17660/ActaHortic.2015.1065.141
Derechos de acceso
openAccess
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Author
Gómez-Marco, Francesc; Tena, Alejandro; Jaques, Josep A.; Urbaneja, Alberto
Date
2015
Cita bibliográfica
Gomez-Marco, Francesc, Tena, A., Jacas, J.A., Urbaneja, A. (2015). Ground Cover Management in Citrus Affects the Biological Control of Aphids. Acta Horticulturae, 1065, 1125-1128.
Abstract
The citrus aphids Aphis spiraecola Patch. and Aphis gossypii Glover (Hemiptera: Aphididae) are key pests of citrus clementine in Spain. A rich complex of natural enemies (NE) exploits these two species. However, NE usually colonize citrus trees once aphid populations have exceeded economical thresholds. Hence, successful biological control should be based on anticipating the arrival of NE. Recently, our group has found that citrus orchards with a ground cover of grass (Poales: Poaceae) had less aphids per colony and these colonies lasted shorter than those colonies found in orchards with bare soil management. These differences were attributed to an earlier appearance of aphid NE in the grass cover which attracted NE to the citrus orchard. This early appearance of NE contributed to a successful control of aphids in the canopy.
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