Integrated Crop Management News

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Week of May 26 Crop and Weather Report

May 27, 2009

Doug Cooper, Iowa State University Extension communications specialist, interviewed climatologist Elwynn Taylor, integrated pest management specialist Rich Pope, and corn agronomist Roger Elmore Tuesday, May 26 for the weekly Iowa crop and weather report.

Elmore reports heavy rain has created a bit of a dilemma for farmers trying to determine whether or not to replant corn. He says replanting at the end of May will normally reduce production by about 30 percent compared to late April early May plantings.

Dynamic Black Cutworm Action Threshold

May 27, 2009

Make decisions about treating black cutworm by placing current economic and yield factors into a spreadsheet designed by ISU Extension specialists. Spreadsheet is downloadable from this article.

Degree Days - From a Brisk Week to a Balmy One

May 26, 2009
Image of base 50 degree F degree days in regions of Iowa from May 1 to May 25, 2009


by Rich Pope, Corn and Soybean Initiative

Although the week of May 10 was seasonally cold; we made up most of that week's lost heat during the week of May 17.

 Accumulated degree days in Iowa from May 1 through May 25, 2009  

Corn planting is nearing completion across Iowa, and soybean planting is wrapping up in some regions as well.  

Scouting Soybean Seedling Diseases

May 22, 2009
Image of pre-emergence damping-off

By XB Yang, Department of Plant Pathology

With soybean planting completed in some regions, seedlings are emerging in early planted soybean fields. Starting now and continuing for the next two weeks, producers should scout for soybean seedling diseases.

Field Guides Allow Quick, In-field Diagnosis of Soybean Problems

May 21, 2009
Image of several field guides for disease and pest management

By Tamsyn Jones, Corn and Soybean Initiative

Corn and soybean planting is almost done. As young plants start to emerge, growers will increasingly want to watch for pest and disease issues that could affect yield. An Iowa State University Extension field guide series is available to help farmers, agronomists and crop advisors quickly diagnose plant problems.

May 18 Crop and Weather Report

May 20, 2009

Iowa State University Extension climatologist Elwynn Taylor, integrated pest management specialist Rich Pope, and soybean agronomist Palle Pedersen are interviewed during the weekly crop and weather report with Doug Cooper.

Taylor says La Niña will not be a factor during the 2009 growing season and there is a chance that an El Niño could develop. El Niño would take the threat of drought out of the picture, according to Taylor.