Report
Pea weevil management in winter peas
Washington State University Extension fact sheet, 382E, Washington State University Extension
07/2023
DOI:
https://doi.org/10.7273/000005077
Abstract
With high fertilizer prices, the ability of peas to fix atmospheric nitrogen via root nodules makes it a great rotational crop with central Washington s winter wheat crops. Unfortunately, both winter and spring peas are under attack by the pea weevil, Bruchus pisorum (L.). Heavy infestations of this key pest can reduce the pea seed to empty shells, severely impacting yields. A second impact of feeding by pea weevils is that it can make plants more susceptible to aphids and aphid-transmitted viruses. In Washington State, a pea pest survey conducted in 2018-2019 detected pea weevil in Adams, Douglas, and Lincoln Counties, with densities ranging from 1 weevil per 25 sweeps levels slightly above action thresholds-to as high as 21 weevils in 2018 and 71 the following year. Producers wanting to grow peas as a rotational crop to break pest and disease cycles, to control grassy weeds, or to benefit from atmospheric nitrogen fixation need to be able to distinguish this pest from other insects, know when and how to best sample for it, and know their management options if outbreak numbers are detected.
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Details
- Title
- Pea weevil management in winter peas
- Creators
- Dale K. Whaley
- Academic Unit
- Publications, WSU Extension
- Series
- Washington State University Extension fact sheet; 382E
- Publisher
- Washington State University Extension; Pullman, Washington
- Format
- pdf
- Identifiers
- 99901026341401842
- Copyright
- http://rightsstatements.org/vocab/CNE/1.0/
- Language
- English
- Resource Type
- Report