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Tar spot concerns increasing

Cooler and wetter conditions in parts of the Eastern Corn Belt recently are ideal for tar spot outbreaks.

Pioneer dairy specialist Dann Bolinger covers Michigan and Ohio.

“Tar spot is present, it is at significantly lower pressure levels at this stage of the game compared to last year, although we have has some pretty conducive weather in recent weeks,” he says.

He says tar spot thrives in high humidity, morning fog, and areas of consistent leaf wetness, and pressure is likely to start accelerating.

He tells Brownfield because of the late start to planting, corn silage harvest is currently projected one to two weeks behind last year.

“We’re looking at most of Michigan being in the middle of September, around the 15th, obviously as you move south into southern Michigan and into Ohio and Indiana, it will be a little earlier than that,” he forecasts.

For farms with shorter plant stature or reduced pollination, Bolinger says more corn will need to be chopped to meet feed storage needs.

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