Volume 58 Number 18 Date 11/21/2013
SQUASH BUG - This difficult-to-control insect was a common problem in home gardens again in 2013. Several reports of damage to melons, pumpkins and squash were received in July and August. The dry weather of late summer probably contributed to the high populations observed.
LATE BLIGHT - Symptoms first appeared in an Adams County potato field on June 28 and by early August potatoes infected with late blight had been confirmed in Adams, Brown, Dunn, Juneau, Langlade, Portage and Waushara counties. Infected tomatoes were reported from Brown, Kewaunee, Manitowoc, Monroe, Ozaukee, Portage, Vernon and Waukesha counties. All but two of the samples were identified by the UW-Madison Department of Plant Pathology as US-23, a new strain first detected in 2010. Most late blight identified in the U.S. this year was the US-23 genotype, which is more virulent on tomato than potato.
STRIPED CUCUMBER BEETLE - Overwintered adults became numerous soon after emergence in May and severe infestations were observed on seedling and transplanted cucurbits in Dane, Grant, Rock and Sauk County gardens. Treatment specifically for this pest was required in several instances. A Dane County grower noted that this beetle was the single most important pest insect on his farm this year.
-- Krista Hamilton, DATCP Entomologist