Links to these articles are strongly encouraged. Articles may be republished without further permission if published as written and if credit is given to the author, Integrated Crop Management News, and Iowa State University Extension and Outreach. If articles are used in any other manner, permission from the author is required.
Alison Robertson, ISU Extension plant pathologist, found symptoms of Goss's wilt in a west central Iowa field, a field with a history of the disease. During the June 27, 2011 Crop Minute, she tells how to identify the disease and actions to take to management Goss's wilt. While there is no rescue treatment for the disease, she recommends steps to take to identify Goss's wilt and management actions to consider.
Livestock producers and service providers can receive training on how to use the Revised Universal Soil Loss Equation 2 (RUSLE2) and the Iowa Phosphorus Index for use in nutrient management and manure management plans.
Goss's wilt symptoms found in research study field, a field with a history of Goss's wilt.
Corn rootworm egg hatch in Iowa can occur from late May to mid June depending on soil conditions, but the average hatching date is around June 6. See date predictions for 2011.
Iowa Secretary of Agriculture Bill Northey reminded farmers in a news release June 21 that grain impacted by flood waters is considered adulterated and cannot be used for feed or food. He references this article by Charlie Hurburgh and Dan Loy.
By Roger Elmore, Department of Agronomy
Yellow leaves wave above V5 to V8 corn canopies in northern and central Iowa this week. These sun-starved leaves freshly emerged from twisted whorls will turn green soon after they begin intercepting sunlight.
Potential causes are numerous: rapid growth coupled with a wide range of temperatures, hail, strong winds or an application of a herbicide, insecticide or fungicide, etc.
The soybean cyst nematode (SCN) is a serious yield-limiting pest in the Midwest, and adult SCN females can be seen with the unaided eye as small, white objects on soybean roots. Recently, adult SCN females were observed on soybeans that were planted in early to mid May in north central Iowa, indicating that fields can be checked now for the presence of SCN.
By Steve Barnhart, Department of Agronomy
Oats have been an important crop in Iowa. In addition to being a favored spring-planted companion or cover crop for forage seedings, they have historically been harvested as a cash grain crop. In recent years, as market demands and cropping systems have changed, oats are more often being harvested as hay or silage for livestock.
A recent scouting adventure in northeast Iowa resulted in finding a few different caterpillars infesting corn. The most abundant plant damage was from black cutworm.
Conservation planning and implementation of practices need to be considered carefully as solutions to reducing potential row cropping system effects on soil and water quality.
