Striped Cucumber Beetle (SCB): SCB populations were found in a pumpkin field in Rosemount (0.4/plant). However, the infestation was only in 1 out of 5 cucurbit fields in the immediate area, and was limited to edge rows of the field. This suggests that SCB activity is just beginning, and monitoring of cucurbit fields should begin immediately. In addition to SCB damage, we are also seeing damage from BLB (see picture, below). As reported in 2003, BLB feeding on cucurbits is an uncommon occurrence (http://www.vegedge.umn.edu/mnvegnew/vol5/620pest.htm). However, the presence of BLB is important to note, because damage is very similar to SCB, and it is unlikely that BLB damage will cause significant yield/crop losses. Therefore, make sure that SCB is present in the field, and not just BLB, before treatment decisions are made.

Bean Leaf Beetle (BLB): We continue to see high levels of BLB in our snap bean plots. In untreated check plots we observed 0.75 BLB/plants. However, early-planted commercial fields of snap beans have low levels of BLB (0.2 BLB/plant). Populations of BLB continue to be wide-spread throughout several different crops. As soybeans continue to emerge, we would expect BLB populations to begin moving to soybeans.

Flea Beetle: Flea beetle activity continues in cabbage, with both seeded and transplanted cabbage showing damage (see current field picture).

Potato Leafhopper (PLH): Populations of PLH have finally moved into snap beans, although well below threshold (0.1/sweep). With the severe weather we have had and are currently experiencing, the potential exists for high winds to move populations in and out of fields very rapidly. Therefore, regular scouting for PLH in snap beans and other crops should begin.

Seedcorn Maggot: In our 2^nd snap bean seed treatment trial at Rosemount, we found 58-68% damaged seed in our untreated check plots. We also observed numerous SCM pupae in the soil as we dug up the seed. We will assess stand counts in the next few weeks, and determine final SCM impact on stand.

 European Corn Borer (ECB): Catches of ECB in blacklight traps continue to remain low. Current degree-days at Rosemount are 566 (base >50°F). The peak of the 1^st generation flight should occur at approximately 600 degree-days. ECB catch has been reported from Lamberton (Redwood Co.), St. James (Watonwan Co.) and Fulda (Murray Co.) trapping sites.