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field corn diseases

Field Crops Disease Updates

August 6, 2021cmanneri

Alyssa Koehler, Extension Field Crops Pathologist; akoehler@udel.edu Field Corn Grey leaf spot (GLS) has remained the primary disease showing up in corn. If GLS lesions are becoming widespread in corn that is already past R3, yield potential should not be… Continue Reading →

Agronomic Crops 29:20, field corn, field corn diseases, soybean, soybean downy mildew

Physoderma Brown Spot in Corn

July 23, 2021kgyoung

Alyssa Koehler, Extension Field Crops Pathologist; akoehler@udel.edu   This week I have received a few samples with Physoderma brown spot. This disease occurs across much of the US, but is not one widely present in our region. I suspect it… Continue Reading →

Announcements 29:18, field corn diseases, physoderma brown spot

Foliar Disease Scouting in Corn

July 16, 2021kgyoung

Alyssa Koehler, Extension Field Crops Pathologist; akoehler@udel.edu   The Usual Suspects Grey Leaf Spot Consistently our most common disease of corn, GLS has been becoming more noticeable over the past week with the end of week/weekend rain and humid weather.… Continue Reading →

Vegetable Crops 29:17, Curvularia leaf spot, diplodia leaf streak, field corn, field corn diseases, grey leaf spot, northern corn leaf blight, tar spot

Corn Disease Updates

June 25, 2021kgyoung

Alyssa Koehler, Extension Field Crops Pathologist; akoehler@udel.edu As tasseling in corn approaches, it is a good time to scout fields to decide if a fungicide will be applied. When considering the economics of a fungicide application, it is important to… Continue Reading →

Agronomic Crops 29:14, field corn, field corn diseases, grey leaf spot

Resources for 2021 Corn and Soybean Fungicide Recommendations

June 18, 2021Emmalea Garver Ernest

Alyssa Koehler, Extension Field Crops Pathologist; akoehler@udel.edu Other than a few cases of Pythium spp. in corn, we have observed very little disease in field crops so far this season. As growth progresses, we will continue to monitor for common… Continue Reading →

Agronomic Crops 29:13, field corn, field corn diseases, soybean, soybean diseases

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