By WCM Staff on 4/28/2005 11:10 AM

Alfalfa weevils overwinter as adults, becoming active with the first warm days of spring in which they migrate from plant debris, woodlots, ditchbanks, etc. into alfalfa stands to lay eggs. Most eggs are deposited in stems of the growing alfalfa. By using degree days (accumulated above a base 48F), growers and crop advisors can monitor fields for alfalfa weevil activity.

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By WCM Staff on 4/21/2005 4:01 PM

Corn flea beetle can vector Stewart’s bacterial wilt of corn, and is of concern in susceptible sweet corn varieties and susceptible dent corn inbred seed production fields if 1) corn flea beetles have a high overwintering survival rate 2) Stewart’s wilt bacteria is available for the corn flea beetle to pick up and spread.

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By WCM Staff on 4/14/2005 3:07 PM

Although not in the insect management category, I have talked with several consultants and growers who have asked about the status of corn seed chemical treatment options that may be registered in the near term to deter greater sandhill crane (Grus Canadensis tabida) feeding on field corn between the planting and early seedling stages.

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By WCM Staff on 4/7/2005 3:13 PM

Results of research conducted by University of Wisconsin, Madison entomologists and a soil scientist on the “Effect of soil potassium availability on soybean aphid population dynamics and soybean yield” were published in the February 2005 issue of the Journal of Economic Entomology.

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By WCM Staff on 1/17/2005 5:28 PM

The late season 2004 BPMV analyses are complete and the season ended as it began, with minimal detection of BPMV in bean leaf beetles collected in spring alfalfa fields followed by no positive detections of BPMV in late season soybean plants throughout the state.

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