The following table provides supplemental information to an article (“Soil-Residual Herbicides Applied to Emerged Corn”) published last week. Table 1 summarizes information about postemergence applications of more traditional soil-applied corn herbicides. Please consult the respective product label for additional information.… Read more
Categories
Useful Pages
Click here to subscribe (or unsubscribe) to the Bulletin via e-mail notifications
Cereal Leaf Beetles and Aphids Present in Southern Illinois Wheat Fields – Overall Activity Low
Kevin Black, Insect and Plant Disease Technical Manager, Growmark, Inc., recently reported that cereal leaf beetles can be found in low numbers in some wheat fields across southern Illinois. In addition, densities of aphids in these fields were low according to Kevin.… Read more
Western Corn Rootworm Hatch Expected to Begin over Memorial Day Holiday Weekend for Central Illinois
Each spring as we approach mid-to-late May, questions begin to surface regarding the timing of the annual corn rootworm larval hatch. In general, this yearly event and the Memorial Day Holiday weekend coincide reasonably well for the latitude that cuts across much of central Illinois.… Read more
Agricultural Pesticide Use Trends and National Interactive Maps Available, 1992 to 2009
Just recently, the National Water-Quality Assessment Program, United States Geological Survey, released information on the use of agricultural pesticides (459 pesticides) for the period of 1992 to 2009. Provided below are links that can be used to access maps that show pesticide use, methodologies to determine their use, and county level information.… Read more
Update on Black Cutworm Projected Cutting Dates for Illinois
Black cutworm moths continue their northward migration into Illinois and other areas of the Corn Belt. Kelly Estes, Cooperative Agricultural Pest Survey Coordinator for the state, shared with me projected cutting dates for the following counties: Fayette – May 27, Pike – May 22, Edgar – May 28, Piatt – May 21, Logan – May 22, Menard – May 22, and Warren – June 6.… Read more
Don’t Neglect to Scout for Alfalfa Weevils in the Rush to Plant Corn
On May 15, I scouted a stand of alfalfa in Champaign County and found numerous third and fourth instar alfalfa weevil larvae by using a sweep net. By May 16, 461 degree days (base 48ºF) had accumulated since January 1, 2013 for Champaign.… Read more
Control Emerged Waterhemp Prior to Planting
Earlier this month, we discussed advantages of and techniques for controlling emerged weed vegetation prior to planting. Several winter annual weed species have reached maturity while others, such as cressleaf groundsel (Figure 1),
began to flower within the past 10 days across areas of central Illinois. Control of these mature plants with herbicides or single passes of tillage equipment will continue to be challenging.… Read more
2013 Field Day Events in Illinois
It’s been a difficult planting season in Illinois, but crops will eventually be growing this year, and we’ll find both expected and unexpected challenges as we move into the cropping season. Fields days organized by Crop Sciences at the University of Illinois and other institutions will focus on crops and pests, with speakers talking about current crop issues along with information from previous research.… Read more
Soil-Residual Herbicides Applied to Emerged Corn
A potential scenario of planting delays will be corn planted in fields where no soil-residual herbicide was applied. If the corn has not yet emerged, the soil-residual herbicide can be applied as originally planned. But, what if the corn has emerged and the soil-residual herbicide has not been applied? Can the application proceed as planned, or will a different product need to be selected? The answer depends on the respective herbicide.… Read more
Stripe rust of wheat observed in Illinois
Stripe rust of wheat was observed in Champaign County, IL on May 10, 2013 (Fig. 1). The incidence of the disease was very low. The observation of this disease in Champaign County indicates that stripe rust likely is present in southern Illinois counties too.… Read more