By WCM Staff on
6/28/2007 2:00 PM
Over the last couple of weeks, in southern Wisconsin at least (Dodge, Columbia, Dane Counties), conversation and questions have noted the large number of black and orange butterflies.
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By WCM Staff on
6/20/2007 2:35 PM
True Armyworm moth captures have increased in black light traps in Wisconsin over the past two weeks, and are high in neighboring states MN and IL.
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By WCM Staff on
6/15/2007 9:44 AM
First generation European corn borer egg hatch has begun with confirmed feeding reports in corn plants in southern Wisconsin. Krista Hamilton, WI DATCP Pest Survey, reported egg hatch on June 8th. Please visit the Wisconsin Pest Bulletin corn section for this week’s statewide update http://pestbulletin.wi.gov/index.jsp.
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By WCM Staff on
6/15/2007 9:32 AM
Potato leafhopper populations have increased over the last week, and nymph production is well underway. Many consultants and farmers have begun weekly sweep net sampling of alfalfa fields - this practice should continue for the remainder of the season. UPLOADTEMPLATE
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By WCM Staff on
5/31/2007 12:59 PM
A reminder to watch 2nd crop alfalfa regrowth for remnant alfalfa weevil larvae and adults. UW-Extension Fond du Lac Crops/Soils Agent, Mike Rankin sent the featured pictures here on May 22nd. Mike reported significant alfalfa weevil larval feeding pressure along the east shore of Lake Winnebago.
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By WCM Staff on
5/31/2007 12:57 PM
Soybean aphids have been detected on V1 soybeans. This is not unusual as we know soybean aphid egg hatch and initial generations occurred on the overwintering host buckthorn earlier this spring.
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By WCM Staff on
5/24/2007 12:21 PM
Bean leaf beetles have begun to emerge in the region. Bean leaf beetles overwinter as adults beneath leaf litter. In early spring, adults feed on cultivated (alfalfa) and wild (e.g. showy tick trefoil) legumes. As soybean seedlings emerge, beetles move into soybean fields to continue feeding and lay eggs.
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By WCM Staff on
5/17/2007 1:30 PM
Alfalfa weevil larval hatch occurred on schedule over the first two weeks of May, in areas of Wisconsin that have reached and exceeded the 300 alfalfa weevil degree-days (base 48F) necessary for egg hatch. Reports have come to me between Thursday May 10th and Wednesday May 16th from southeastern, southwestern and western Wisconsin.
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By WCM Staff on
5/17/2007 1:22 PM
This season marks the 7th year since the discovery of soybean aphid in North America. This year also marks the first introduction of an exotic natural enemy against soybean aphid.
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By WCM Staff on
5/10/2007 4:00 PM
This is a routine reminder that black cutworm moth flights are underway, to expect larval development during the rest of May and in to June (depending on temperatures), and remember to monitor corn stands from seedling emergence through V5 growth stage.
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By WCM Staff on
5/3/2007 9:33 AM
Video recordings of the Feb 28 western bean cutworm and March 6 soybean aphid short course presentations are now available on the web.
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By WCM Staff on
5/3/2007 9:24 AM
The first alfalfa insect pest of the year to be aware of is alfalfa weevil. Article contains information on degree days, scouting and management.
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By WCM Staff on
4/25/2007 2:10 PM
Due to a trend of warmer winters in the state, Stewart’s Disease, also known as Stewart’s Wilt, should now be on the radar for Wisconsin sweet corn and seed corn producers. Warmer winters increase the overwintering survival rate of corn flea beetle, the primary vector of the bacterium that causes the disease.
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By WCM Staff on
4/19/2007 2:37 PM
This article stems from our discussion about this proposed practice to “double-up” on rootworm control tactics for the 2007 season. We (UW Madison Entomology and UW-Extension) do not recommend this practice, nor does it fit into a sound integrated pest management (IPM) approach to agronomic field crop production.
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