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
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
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
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
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
