Strategic management and timely fungicide applications significantly reduce the potential impact of frogeye leaf spot (FLS) in soybean fields. Instead of waiting for the disease to show up and ...

Gray leaf spot is a widespread fungal disease in corn, responsible for a 23-million-bushel yield loss in the U.S. in 2024. 1 The challenge with controlling gray leaf spot isn’t just deciding whether ...

Chuck H. from Larkfield asks: The Photinia shrubs I have planted alongside my back fence have developed these brown spots on the leaves. Some leaves have been falling, and it looks like its spreading ...

A: That’s the fungus gray leaf spot. It most commonly follows application of nitrogen during the hot summer weather. It is a disease that can be controlled by application of either Daconil or ...

Gray leaf spot of corn is caused by the fungus Cercospora zeae-maydis. The fungus is now widespread in Indiana and the Eastern Corn Belt (Midwest). Weather strongly influences development of gray leaf ...

Our Indian hawthorn bushes seem to have a disease. They were thriving a few weeks ago, and now they are practically bare. The leaves have spots and are turning red and dropping off. What would you ...

A reader recently asked what the brown spots are on their rhubarb. Leaf spots are commonly found on rhubarb plants. This is more of an aesthetic problem and won't severely damage the plant. Rhubarb is ...

Plant pathologist Nathan Wyatt’s research focuses on studying the potential for cercospora leaf spot to develop to management practices including planting sugarbeets with the CR+ trait. Tiny leaf spot ...

Foliar leaf spot diseases and blights of tomato plants are common problems for tomato growers in Delaware and the Mid-Atlantic States. Pathogens survive in plant debris or weed hosts, and are favored ...

Q: This happened to my Mexican plum last summer. What caused it, and what can I do to prevent it this year? A: At first glance I thought this had been caused by caterpillars, but then I decided to ...