VegNet Regional Pest Trends for the Week of September 5th, 2016

VegNet is an insect pest monitoring program funded by the Oregon Processed Vegetable Commission and managed by the Oregon State University Department of Horticulture. To add your name to this newsletter, please click the ‘subscribe’ button on the homepage. For a review on how to interpret VegNet tables, click here.

  • Things are not always what they seem; the first appearance deceives many; the intelligence of a few perceives what has been carefully hidden.” – Phaedrus

In other words – please interpret this week’s report with caution. We were unable to visit all field sites.

  • As reported about a month ago, high temperatures have a dramatic impact on activity of Diamondback Moth (Plutella xylostella - DBM). Populations peaked in the weeks following our ‘heat wave’, but have dipped back down to normal levels. However, as mentioned above, please interpret with caution this week because we were only able to visit 3 of the 5 brassica sites. The adult flight peak of Aug 29th would mean that DBM larvae are medium sized right now – a good time to apply controls if necessary.