Use Treatment Thresholds for Western Bean Cutworm
As adults emerge, scouting is extremely important in determining management of western bean cutworm.
Integrated Crop Management News
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Japanese Beetles Expanding Range in Iowa
As Japanese beetles expand their range in Iowa, it is important to understand their life cycle, damage they cause and options available for management.
Notes on Soybean Foliar Fungicide Applications in a Cool, Wet Year
By XB Yang, Department of Plant Pathology
Last week I wrote an article on scouting soybean foliar diseases in this unusual summer, which has been cool and wet. As the weather trend of cool and wet continues, there are questions about the use of soybean fungicides to manage the risk of soybean foliar diseases. Now plants in many soybean fields are approaching the R3 growth stage which is critical to the effective use of foliar fungicide sprays. This report addresses a few questions on fungicide applications.
Further Considerations for Foliar Fungicides on Corn and Soybean
Grain prices and fungicide costs are economic factors affecting decisions to apply a fungicide this year.
Late-Season Herbicide Applications in Soybean
Weed reinfestations resulting from slow canopy development and ample soil moisture may warrant additional treatment this year.
Crops Put In a 4-Day Work Week
By Rich Pope, Department of Plant Pathology
Eyespot and Gray Leaf Spot Severity Continue to Increase in Iowa
GLS reported at threshold levels in some corn fields in southwest Iowa. The risk of stalk rot may justify using a fungicide application.
Scout for Corn Leaf Aphids Before Tasseling
A well-timed spray while corn leaf aphids are outside the whorl or on the tassel is recommended when they exceed thresholds.
Concerns about Herbicide Resistant Weeds in Iowa
Prelimiary data from in-field demonstrations indicate Iowa has populations of weeds resistant to PPO inhibitor herbicides.
Corn Quality Issues Continue
Producers selling 2008 corn can expect closer grading and increased discount scales for damage; and they should take extra precautions to preserve the quality of 2009 crop.