[7/19/2017] SWD trap catch is increasing across the state and we have detected the first Japanese Beetles of the season.
[7/12/2017] During past week, July 3-10th, we observed a significant increase in SWD adults collected at several trap locations in the Twin City Metro area. For example, high catch rates of 70/week were found at Hastings (grapes), with over 110/week/trap observed at Andover. The timing of the increase also coincided with the mid-July increase we saw in 2016. Again, all SWD Trap sites are summarized weekly at: https://www.fruitedge.umn.edu/swdtrap
[6/28/2017] Following this year’s 1st catch of SWD in Scentry baited traps on June 12th this year, captures were also reported the week of June 19th, near Northfield and on the St. Paul campus (Dr. Mary Rogers, Horticultural Science). Most important, as of last Monday (6/19), and this week (6/26), SWD were captured in traps at ALL of our 7-county Metro area on-farm locations. Trap captures were still relatively low this week, ranging from zero to 19 per trap, with most traps in the 0-5 range. However, as noted last year, the onset of trap catch (i.e., SWD presence of 1 or more/trap/week) indicates a risk for egg-lay and larval infestations, and time for growers to finalize their management plans for all berry crops this season.
[6/21/2017] Following this year’s 1st catch of SWD in Scentry baited traps last Monday (6/12), captures were also reported last week, near Northfield and on the St. Paul campus (Dr. Mary Rogers, Horticultural Science). Most important, as of this past Monday (6/19), SWD were captured in traps at all of our 7-county Metro area on-farm locations.
[6/15/2017]The first SWD adults of the season were collected in traps with Trece lures over apple cider vinegar, and in traps with Scentry lures over water on Monday, June 12th, at the Rosemount Research and Outreach Center in Rosemount, MN over fall bearing raspberries.
[9/27/2016] Despite the cool temperatures, SWD infestations in grapes remain high.
[9/1/2016] Spotted Wing Drosophila (SWD) continues to demonstrate why it is one of the more devastating invasive insect pests in Minnesota. This has been another record year for SWD population numbers, with some locations exceeding 1500-2000/trap per week, in the metro area.
[7/27/2016] SWD counts continued to increase this past week, with major, exponential increases in traps located near Summer- and Fall-bearing raspberry (>1400/trap near Andover). Commercial growers should be well into their IPM and Organic management programs for SWD.
[7/7/206] As per last week, the story remains similar, with increasing trap catches of SWD adults. Ripening and ripe fruit of strawberry, raspberry, and blueberry is susceptible and continues to be at risk for SWD infestation.
[6/29/2016] Numbers of SWD in traps continue to increase across the state. All traps were positive this week with the highest single trap catch at 37 flies. Female flies continue to account for the majority of flies captured. Based on past years trap data, we expect SWD numbers to continue to increase over the next several weeks.