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Pollen Quality Affects Biological Control of Tetranychus urticae in Clementine Mandarines

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URI
http://hdl.handle.net/20.500.11939/4367
DOI
10.17660/ActaHortic.2015.1065.143
Derechos de acceso
openAccess
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Author
Pina, Tatiana; Sa Argolo, Poliane; Urbaneja, Alberto; Jaques, Josep A.
Date
2015
Cita bibliográfica
Pina, Tatiana, Sa Argolo, Poliane, Urbaneja, A., Jacas, J.A. (2015). Pollen Quality Affects Biological Control of Tetranychus urticae in Clementine Mandarines. Acta Horticulturae, 1065, 1133-1136.
Abstract
Tetranychus urticae Koch (Acari: Tetranychidae) populations in citrus can be regulated through the management of the cover crop. A mono-specific cover of the grass Festuca arundinacea Schreber (Poaceae) enhanced the diversity and abundance of Phytoseiidae mites compared with a multifloral cover. This increase resulted in a better control of T. urticae. Pollen availability and quality could be behind this result. Whereas multifloral cover offers a long-term source of a wide variety of pollen, F. arundinacea offers one single type of pollen in spring only. As a consequence, the generalist pollen feeder Euseius stipulatus (Athias-Henriot), which is a superior intra-guild predator, is highly favored in multifloral covers. Therefore, poor quality pollen may prevent pollen feeders from reaching high numbers and indirectly benefit T. urticae control by specialist phytoseiids.
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