Corn Disease Risk Maps

One-Month Weather Outlook

In the next 30 days, most of the North can expect above-average temperatures, with regions North of I-90 having temperatures closer to normal. There is an equal chance of having precipitation above or below normal during this period. In the next 14 days, expect above-average temperatures for the entire north. Above-normal precipitation is predicted for regions east of I-35.

Gray Leaf Spot Risk Summary

Risk of gray leaf spot is at a similar level as the previous forecast during this period.

Next two-week risk interpretation

In the next two weeks, conditions remain moderately to highly favorable for this disease within most of the Corn Belt. Areas in yellow: a fungicide application is recommended on susceptible hybrids at the VT-R4 stage if lesions are found on the earleaf or above. Areas in orange: a fungicide is recommended on susceptible hybrids that have yet to reach the R5/dent stage. CoC fields and fields with high nitrogen levels are at a higher risk.

ONE-MONTH RISK MAP