Wednesday, 20 November 2002 - 10:30 AM
0912

This presentation is part of : Development and Implementation of Management Systems for Thrips and Tospoviruses

Developing an IPM program for thrips in greenhouses

Michael P. Parrella, Department of Entomology, University of California, Department of Entomology, One Shields Avenue, Davis, CA

Thrips remain the number one pest of floriculture crops in California. Many growers approach thrips management using regular prophylactic sprays with the idea that there is a zero tolerance for thrips in the crop. Working with roses, we embarked on developing an IPM program for thrips which encompassed proper identification, statistically accurate sampling plans, economic thresholds, biological control and reduced risk pesticides, and cultural and physical controls. A successful program for managing thrips on roses must also include compatible management plans for other key pests -- twopspotted spider mites and rose powdery mildew. Strategies for managing these other pests were included in an overall IPM program delivered to rose growers in California.

Species 1: Thysanoptera Thripidae Frankliniella occidentalis (Western flower thrips)
Keywords: IPM, greenhouse

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