Japanese Beetle – Scouting and Thresholds for Soybean and Corn Eileen Cullen, Extension Entomologist Questions have come in this week concerning Japanese beetle on soybean and corn. There is one generation of Japanese beetle per …
Insects & Mites
Western Bean Cutworm Moth Flight Has Begun
Western Bean Cutworm Moth Flight Has Begun Eileen Cullen, Extension Entomologist The annual flight of western bean cutworm (WBC) moths began this past week. The first moths of the season were recorded June 23-29 in Adams, …
Brown Marmorated Stink Bug
Brown Marmorated Stink Bug Bryan Jensen, IPM Program The Brown Marmorated Stink Bug (BMSB), Halymorpha halys, is an invasive, exotic insect pest recently introduced into the United States (Pennsylvania, 2001), and even more recently in …
Biological Control Parasitoid Released for Emerald Ash Borer Does not Harm Honeybee Colonies
Biological Control Parasitoid Released for Emerald Ash Borer Does not Harm Honeybee Colonies Eileen Cullen, Extension Entomologist Entomolgists with University of Wisconsin-Madison and USDA APHIS have initiated a biological control program for Emerald Ash Borer. …
Western Bean Cutworm Egg Masses and Larval Hatch- Scout Field and Processing Sweet Corn Fields
Western Bean Cutworm Egg Masses and Larval Hatch- Scout Field and Processing Sweet Corn Fields Eileen Cullen, Extension Entomologist Careful field scouting in field corn and processing sweet corn for western bean cutworm egg masses …
Scout Soybean for Soybean Aphid
Scout Soybean for Soybean Aphid Eileen Cullen, Extension Entomologist Soybean aphids have been present on soybean at low levels (below the economic threshold of 250 aphids per plant) at various locations in the state for …
Black Cutworm Feeding on Corn – Out of the Woods Yet?
Black Cutworm Feeding on Corn – Out of the Woods Yet? Eileen Cullen, Extension Entomologist Black cutworm (BCW) larvae are in the larger stages (4th to 6th instar) and corn in the V4-V6 stages from …
Black Cutworm Feeding on Bt Corn Technology
Black Cutworm Feeding on Bt Corn Technology Eileen Cullen, Extension Entomologist Reports of black cutworm feeding (chewing holes in leaves) and cut plants are coming, with two calls this week. Late planted corn is still …
True Armyworm Larva – Scout Corn and Wheat Fields
True Armyworm Larva – Scout Corn and Wheat Fields Eileen Cullen, Extension Entomologist The insect feeding activity report of note I received this week is that of true armyworm larvae on corn in LaCrosse County …
Update on Alfalfa Weevil and Potato Leafhopper as Alfalfa Transitions from First Crop Hay to Second Crop Growth
Update on Alfalfa Weevil and Potato Leafhopper as Alfalfa Transitions from First Crop Hay to Second Crop Growth Eileen Cullen, Extension Entomologist Alfalfa Weevil – Larval populations of alfalfa weevil have been gradually increasing in …