We are starting to see common diseases in the lower canopy of corn, as we were out scouting this past week as early planted corn has begun to tassel in Indiana.
8 articles tagged "southern rust".
It is important to continue to scout for diseases in both corn and soybeans. Recent rains have created favorable environmental conditions for the development of foliar diseases in both crops. In our scouting rounds this week we continue to find gray leaf spot, northern corn leaf blight, and tar spot in corn (Figure 1 and 3), and frogeye leaf spot, downy mildew and Septoria brown spot in soybean (Figure 2). In addition, we continue to add counties with active tar spot and southern rust in Indiana. The most frequent question I have received is, “Should we make a fungicide application?” My response – What diseases are you finding in your field? What is your hybrid/variety susceptibility and field history? What growth stage? Are you irrigating? A fungicide application can be effective at reducing disease and protecting yield, but there are a number of factors that need to consider: the field[Read More…]
A number of foliar diseases can impact corn production in both Indiana and Michigan.
Southern Rust is now confirmed in 11 counties in Indiana.
Southern Rust: Southern rust was officially confirmed in Posey County this week. We currently have two positive counties and one probable in Indiana.
Gray leaf spot is also active in the lower canopy at multiple sites across the state. The lesions are light tan in color and generally narrow and rectangular, and can be as long as 2 inches.
Southern rust of corn was officially confirmed this week in both Knox and Jackson counties Indiana.
Corn diseases have been on my radar these past few weeks as I am just getting my boots on the ground in Indiana. Many aerial fungicide applications are going out around the region, corresponding to crop maturity and the uptick of grey leaf spot.
