Please note the corrections to the most recent pest report below:
· We wanted to correct the relayed information regarding Cucurbit Downey Mildew. We mistakenly reported that CDM has validated occurrences in NY and New England. Currently the farthest north that CDM has been confirmed is in Hunterdon County, NJ. Regardless, the risk is still high in our region and vigilance is still recommended.
· The link to post harvest trials for garlic is broken, please use this link for the full research brief: post harvest garlic trials
We apologize for the confusion!
Vic & Scott
Victor Izzo, Ph.D.
Lecturer & Educational Coordinator
Agroecology and Livelihoods Collaborative
Department of Plant and Soil Science & Environmental Studies
University of Vermont
[he/him/his pronouns - why]
cell: (802) 999-6906
“a great deal of chaos in the world occurs because people don't appreciate themselves" ~ Chogyam Trungpa
“there is a crack in everything. that is how the light gets in" ~ Leonard Cohen
First a quick note about our website, it’s in the process of getting some updates installed so this week we are attaching the full report to this email while the website is down. In the past week with the increased precipitation in the region, we are seeing some pests begin to increase in severity and a very important disease being reported in and around the region.
Some of the highlights are below:
Spotted Wing Drosophila are being found in the region and the expectation is that populations will begin to spike with the increased moisture. Flies are being found in traps throughout the northeast including Vermont. However, trap counts have been variable and this is likely due to the variability in the surrounding landscape of individual farms. Regardless, we suspect that we will see a bump in SWD numbers in the coming week.
post harvest results . According to Crystal's work, "[trimming] pruning length did not affect the dried weight of bulbs significantly. Furthermore, there were no significant differences in disease incidence across any of the trimming treatments."Leek moth adult numbers are still very high and in some areas we are seeing very high trap counts of 50+ moths per trap. As many growers are harvesting garlic, if you suspect that you have high leek moth pressure, as evidenced by damage in scapes or leaves, you may consider topping/trimming your garlic to remove any eggs before bringing your plants into curing spaces. Here is a link to Crystal Stewart-Courtens' work on post harvest treatment in garlic for your review:
Squash vine borer moths are being observed throughout the region, and in some cases in very high numbers.
Swede midge damage is being seen in greater frequency in broccoli and kale crops.
For more information on the individual pests we found this week, please see the attached document. For detailed management information about these pests, as well as a comprehensive guide to current production and pest management techniques for commercial vegetable crops, check out the 2020-2021 New England Vegetable Management Guide. And, as always feel free to reach out to us if you have any questions. ([log in to unmask] & [log in to unmask])
Vic and Scott
Scott A. Lewins
Entomology Extension Educator
University of Vermont
117 Jeffords Hall, Burlington, VT 05405