Information Management to Maximize Your Yields

V5 Fungicide Applications – More than just direct yield benefits

Foliar fungicides have proven to be an effective way to protect corn yield by managing foliar diseases such as: Gray Leaf Spot, Common Rust, Southern Rust, Eye Spot, Northern and Southern Leaf Blight, and Northern Corn Leaf Spot when timed and applied correctly. Many studies show that the optimum time for fungicide application is from tassel (VT) to R2. But what about an early season application? Can they replace VT applications? Through a better understanding of fungicide products, it has been discovered that the use of a foliar fungicide will benefit more than just crop yields. They are proven to better the overall plant performance. The correct use of a foliar fungicide can improve stalk integrity, improve health of high yielding hybrids, reduce stalk lodging, decrease harvest losses, and reduce harvest time.
Capture• Early season fungicide treatments at V5-V7 can be applied at a lower cost, and thus have a lower breakeven yield response. 2014 SciMax trial data indicated a 12.8 bu/ac increase with V5 fungicide on responsive hybrids.
• Tank-mixing with a post-emergence herbicide and MAX-IN ZMB from Winfield  allows a fungicide to be applied without any additional application costs. 2014 SciMax trial data indicated a 4.3 bu/ac increase with MAX-IN ZMB application at V5.
• Fungicides can be very effective at managing diseases and protecting yield, but the profitability of an application is by no means a certainty. Many times the most yield limiting diseases like Northern Corn Leaf Blight and Gray Leaf Spot occur much later in the season and the amount of active ingredient remaining from an early application is too low to provide effective control late into the season.
• V5 applications are a good complementary way to prevent early season infections and establish a healthy, uniform stand late into the season. If additional disease pressure arises, a VT application may still be needed for maximum yields.
It is important to remember to check the response to fungicide rating of your hybrid before deciding to make an application, check with your Agronomist for more information.