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Tag: tar spot

Crop Report – Week of July 22, 2024

Soybean Cyst Nematode on Roots
Posted on July 25, 2024 (July 30, 2024) by OMAFRA Field Crop Team

Corn Diseases, Fungicide Timing, Fungicide Resistance and Nematode Surveys! Corn diseases such as tar spot, northern corn leaf blight, common rust, gray leaf spot are easy to spot this year especially in areas which have had considerable rain events.  The good news is the incidence and severity has still been low as many corn fields […]

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Tar Spot Management in Field Corn

Posted on July 18, 2022 (July 18, 2022) by Albert Tenuta

Tar spot, a corn leaf disease that can cause significant yield losses, was first found in Ontario in 2020. It has since been found over a wider geographic area. Here’s an overview of what is currently known about best management practices. The simple answer Tar spot is here to stay. In the U.S. corn belt, […]

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OMAFRA Field Crop Report – August 13, 2020

Figure 2 – Tar spot produces raised, black lesions (stroma) on leaves and husks.
Posted on August 13, 2020 (December 22, 2021) by OMAFRA Field Crop Team

This week we would like to discuss tar spot in corn as well as soybean cyst nematode and sudden death syndrome in soybean. Tar Spot in Corn There is a lot of discussion and questions surrounding tar spot this year in Ontario. Tar spot is a new corn disease in the US midwest and since […]

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