Integrated Crop Management News

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Degree Days - Cool July With Good Crop Conditions

July 28, 2009

By Rich Pope, Department of Plant Pathology

Iowa corn is tasselling and silking this week. We think of the silk date as a marker for the final 60 to 65 days in which the corn reaches physiological maturity. That means we might expect dry down to extend into October across the state. Soybeans are setting pods, and with timely August rainfall, pods should fill nicely. Last week we lost approxiamtely 50 degree days to average across Iowa, making July 2009 as one of the ten coolest in history.   Read more about Degree Days - Cool July With Good Crop Conditions

Notes on Soybean Foliar Fungicide Applications in a Cool, Wet Year

July 23, 2009

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. Read more about Notes on Soybean Foliar Fungicide Applications in a Cool, Wet Year

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