Journal of Insect Science (2008) 8 (49), p. 6 (Carriere et al.)

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Yves Carrière, C. Peter Ellsworth, Pierre Dutilleul, Christa Ellers-Kirk, Virginia Barkley and Larry Antilla (2008)
Area-wide pest management of Lygus hesperus
Journal of Insect Science 8 (49), 6-6
in P.B. Goodell and P.C. Ellsworth, organizers: Second International Lygus Symposium, Pacific Grove, California, April 15-19 2007
Abstract: Understanding the effect of cropping patterns on population dynamics, dispersal, and habitat selection of insect pests has been an unresolved challenge. We studied the western tarnished plant bug, Lygus hesperus (Knight) (Heteroptera: Miridae), in cotton during early summer in central Arizona. We used a general approach based on Global Positioning System (GPS) and Geographic Information System (GIS) technologies combined with spatial statistics, to assess the maximum distance at which forage and seed alfalfa, fallow fields with weeds, and cotton affect L. hesperus population density. Using a set of 50 cotton fields as focal fields, we found that forage and seed alfalfa as well as weeds acted as L. hesperus sources for these cotton fields. The source effect did not extend beyond 375, 500, and 1500 m for forage alfalfa, weeds, and seed alfalfa, respectively. Conversely, cotton fields acted as L. hesperus sinks, but this effect did not extend further than 750 m from the focal cotton fields. These findings suggest that specific spatial arrangements of these field types could reduce L. hesperus damage to cotton.
Database assignments for author(s): Yves Carriere

Research topic(s) for pests/diseases/weeds:
control - general
population dynamics/ epidemiology

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Lygus hesperus Alfalfa/lucerne (Medicago sativa) U.S.A. (SW)
Lygus hesperus Cotton (Gossypium) U.S.A. (SW)