Pest Thresholds: Their Development and Use in Vineyards for Arthropod Management

  • Rufus Isaacs
  • Michael C. Saunders
  • Noubar J. Bostanian


Thresholds provide a quantitative basis upon which crop managers can decide whether arthropod pest populations are below, at, or exceeding a level that warrants the expense of activities to reduce the pests density. These interventions may be cultural, biological, or chemical control practices that reduce the pest population below the economic threshold. Thresholds are an essential component of an IPM program, and their use can lead to significant reduction in pesticides applied to crops and lower costs of production for farmers (Pedigo et al. 1986).


Action Threshold Pest Population Economic Threshold Arthropod Pest Grape Production 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors thank William Hutchison (University of Minnesota) and Craig Roubos (Michigan State University) for valuable comments on earlier drafts of this chapter. The lead author also acknowledges the financial support of the Michigan Grape and Wine Industry Council, National Grape Cooperative, and the USDA Viticulture East Program.


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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Rufus Isaacs
    • 1
  • Michael C. Saunders
    • 2
  • Noubar J. Bostanian
    • 3
  1. 1.Department of EntomologyMichigan State UniversityEast LansingUSA
  2. 2.Department of EntomologyPennsylvania State UniversityUniversity ParkUSA
  3. 3.Horticulture Research and Development CenterAgriculture and Agri-Food CanadaSaint-Jean-sur-RichelieuCanada

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