Corn blight spotted in Missouri Published by admin on Thu, 01/07/2021 - 8:35am
Missouri corn growers should scout for an emerging crop disease, tar spot, in 2021, says University of Missouri Extension plant pathologist Kaitlyn Bissonnette.
She identified tar spot in four far northeastern Missouri counties: Scotland, Lewis and Clark in 2019 and Marion in 2020. She expects it to spread in the northern half of Missouri and then to the middle of the state.
Tar spot, caused by the fungal pathogen Phyllachora maydis, has spread to 10 states since it was first found in the U.S. in 2015. In 2018 it caused significant yield losses in Illinois, Indiana, Wisconsin and Michigan.
Missouri corn growers should scout for an emerging crop disease, tar spot, in 2021, says University of Missouri Extension plant pathologist Kaitlyn Bissonnette.
She identified tar spot in four far northeastern Missouri counties: Scotland, Lewis and Clark in 2019 and Marion in 2020. She expects it to spread in the northern half of Missouri and then to the middle of the state.
Tar spot, caused by the fungal pathogen Phyllachora maydis, has spread to 10 states since it was first found in the U.S. in 2015. In 2018 it caused significant yield losses in Illinois, Indiana, Wisconsin and Michigan.
Tar spot appears as circular or oval raised black dots (stromata) on the both sides of leaves, the sheaths and husks, Bissonnette says. A brown or tan halo often surrounds the raised black spots. It can appear on brown and green tissue, alone or in numbers.
Tar spot found in northeast Missouri cornfields
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Missouri corn growers should scout for an emerging crop disease, tar spot, in 2021, says University of Missouri Extension plant pathologist Kaitlyn Bissonnette.
She identified tar spot in four far northeastern Missouri counties: Scotland, Lewis, and Clark in 2019 and Marion in 2020. She expects it to spread in the northern half of Missouri and then to the middle of the state.
Tar spot, caused by the fungal pathogen Phyllachora maydis, has spread to 10 states since it was first found in the U.S. in 2015. In 2018 it caused significant yield losses in Illinois, Indiana, Wisconsin, and Michigan.