Wisconsin Crop Manager newsletter

Author:	WCM Staff	Created:	4/21/2006 12:13 PM
Whats bugging you. Articles concerning insects on field crops in Wisconsin

Western Bean Cutworm- One to Watch

By WCM Staff on 8/24/2006 11:07 AM

WBCW, expanding its range eastward from the western Corn Belt, is a new pest to be aware of within the corn ear pest complex (corn earworm, European corn borer).

ALERT - Twospotted Spider Mite Persists in Northwestern Wisconsin

By WCM Staff on 8/15/2006 2:37 PM

Twospotted spider mite (TSM) problems did develop, and are persisting, in Northwestern Wisconsin. The article is attached as a PDF to download or view.

Field Note: Soybean Aphid – Threshold Levels Reported

By WCM Staff on 8/3/2006 1:18 PM

Soybean aphid populations have remained below threshold this season as a general rule in much of Wisconsin. However, this is a field by field decision, and numbers have increased over the last 7 to 12 days.

Prepare for 2nd Generation Bean Leaf Beetle in Soybeans

By WCM Staff on 8/3/2006 12:00 AM

First generation bean leaf beetles and leaf feeding are prevalent in soybeans now. First generation falls between the overwintered population and second generation. It is the overwintered population (May and June) and second-generation (mid-August) that are the most important in terms of potential yield impact. Monitoring first generation and developing awareness of which fields have relatively higher numbers now, can help predict the size of second generation which feeds on pods and beans.

Corn Rootworm Damage Reports from 1st Year Corn

By WCM Staff on 7/20/2006 7:47 PM

Reports of corn rootworm larval damage on first year corn have been received over the last two weeks. A report of a field corn field (following soybeans) with extensive root damage (2 to 3 nodes of roots pruned) near LaPrarie, WI. Also in Rock County, a report of similar damage in a first year seed corn field following soybeans near Evansville, WI.

Soybean Aphids Remain Low in WI, Continue Scouting to Detect Change

By WCM Staff on 7/20/2006 7:26 PM

Soybean aphid reports from UW Extension county agents, crop consultants, industry reports, and our UW Entomology field studies remain below threshold for the most part as of Friday July 21st. However, Greg Andrews, UW-Extension Pierce County Agriculture Agent (northwest WI) reported a soybean field averaging 250-500 aphids per plant.

Potential for Two-Spotted Spider Mite Outbreaks Exists

By WCM Staff on 7/20/2006 7:21 PM

In the July 13th issue, I reported about Two-Spotted Spider Mite (TSM) in Jefferson County and recommended scouting for spider mites. This article is to keep that reminder in the forefront.

Corn Rootworm Adults: Beetle Counts and Silk Clipping

By WCM Staff on 7/20/2006 7:02 PM

While below ground corn root feeding impact from corn rootworm is nearing completion, it’s time to turn scouting attention to the above ground corn plant portions. Whole plant adult counts during August are used to make recommendations for rootworm management decisions in continuous corn in 2007.

Two-spotted Spider Mite detected in Jefferson County

By WCM Staff on 7/13/2006 5:08 PM

Inspect Fields in Dry Counties -- On Friday, July 7th, Tim Bender, (UW Extension Crops/Soils Agent, Jefferson County) reported Two-spotted spider mite (TSM) from his soybean rust sentinel scouting field location (southern WI).

Soybean Aphid: USDA PIPE Website and Mid-July Report

By WCM Staff on 7/13/2006 5:02 PM

A new USDA website is up and running with weekly soybean aphid reports from multiple locations within WI and the U.S. The Pest Information Platform for Extension and Education (PIPE) http://www.sbrusa.net/ began with sentinel plot monitoring throughout the U.S. for soybean rust. In 2006, PIPE has expanded with a pilot soybean aphid reporting year.

Alfalfa Stubble Spray? Insecticide REI, PHI, Residual and … Integrated Pest Management

By WCM Staff on 6/29/2006 12:00 AM

Every other week during the growing season, UW-Extension agriculture county agents and UW-Madison field and forage crop specialists have an opportunity to meet via teleconference and share information on insect, weed and plant pathogen pests, agronomy updates, and crop conditions throughout the state.