There are times when ground machinery won’t cut it for fungicide application. Episode 7 of Corn College TV Season 3 discusses when to use aerial applicators and the environmental impacts of this technology.
Late season fungicide applications require evaluating the type of fungicide being applied as well as the method of application. "Look at what type of fungicide you’re using and what type of movement it has in the plant," says Farm Journal Field Agronomist Ken Ferrie. "That’s going to dictate where the disease is."
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For corn, fungicide needs to penetrate deep into the canopy to protect the stalk from the ear zone and up.
So what it the biggest factor in deciding fungicide penetration for aerial applicators? The altitude at which the airplane flies will have a huge effect on how far air pressure from the wings will push the chemical reach down into the canopy. At the proper altitude, less fungicide is lost to the atmosphere and is more likely to reach deep within the stalk.
Learn more about aerial applicators and other disease management techniques in Episode 7 of Corn College TV Season 3 below.