Getting to Know the Aphids in Corn
There are at least two different species of aphids that can be found in corn this time of year, but the identification may not be critical to management.
Integrated Crop Management News
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Hail Damage Disaster Recovery Web site Offers Crop Information
Extension Web site brings timely information to producers making decisions regarding crops recently damaged by hail and wind.
Weekly Crop and Weather Report
July ended as the second coolest on record in Iowa, which can slow down crop development during early reproductive stages, but specialists don't expect much impact on the crop at this time.
Degree Days - We Don't Need Stress!
By Rich Pope, Department of Plant Pathology
It is beyond time to get hot summer weather started! Both corn and soybean are (finally) in reproductive stages, and parts of Iowa are over 200 degree days behind normal.
Iowa Corn 2009 Outlook, as of August 1
ISU Extension agronomists believe this summer's weather may produce another high or record average corn yield.
Common Corn Nematode Characteristics
A growing interest in nematodes that feed on corn prompts this article listing basic characteristics of different types of corn nematodes.
Check SCN Resistant Soybean Roots for SCN Females
Carefully checking roots now for soybean cyst nematode (SCN) females can tell you if resistant soybean varieties are controlling the nematode in the field.
Goss's Wilt and Northern Corn Leaf Blight Showing Up in Iowa
Knowing the characteristics of Goss's wilt and northern corn leaf blight help in identification of the diseases; photographs illustrate those characteristics.
Bean Leaf Beetle Activity Noticed in Soybean
Bean leaf beetle populations are patchy this year; still it is important to scout fields to help prevent economic loss.
Degree Days - Cool July With Good Crop Conditions
By Rich Pope, Department of Plant Pathology
Iowa corn is tasseling 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 approximately 50 degree days to average across Iowa, making July 2009 as one of the ten coolest in history.