I have observed leaf mold of tomato in greenhouses and high tunnels recently. This article will discuss this disease and management options. In the last issue of the Hotline, I discussed Botrytis gray mold. I noted how gray mold is favored by the cool, cloudy weather we experienced earlier this spring. The warmer and sunnier weather we have…Read more about Leaf Mold of Tomato[Read More]
Plant Disease Management
We recently published an article in the Hotline about gray mold of tomato. That article and more details about this disease can be found here. In this short note, we want to share examples of the relationship of gray mold and tomato plant injury. In the figure 1 above, a pruning injury of tomato in a commercial…Read more about Plant Injury and Gray Mold[Read More]
Read more about Plant Injury and Gray Mold
White mold of watermelon – Usually when I write about a vegetable disease it is because the disease may cause important economic loss. Once in a while, however, a disease I find is more a curiosity than a real problem. So, go ahead and read this article about white mold of watermelon. But please don’t worry about…Read more about White Mold of Watermelon[Read More]
Read more about White Mold of Watermelon
The recent cool and cloudy weather has influenced conditions in the field as well as in greenhouses and high tunnels. I have observed more Botrytis gray mold of tomatoes in greenhouses this spring than usual. This is due in part to the weather. This article will discuss this disease on tomatoes and some management options….Read more about Botrytis Gray Mold on Greenhouse Tomatoes[Read More]
Gummy Stem Blight – this fungal disease causes dark brown leaf spots, however, the diagnostic feature of this disease is the water soaked lesion that is often formed under one of the seed leaves (cotyledons). Such lesions often start at the point where the seed leaf joins the stem (hypocotyl) and do not extend to…Read more about Cucurbit Transplant Diseases[Read More]
Recently, this disease was observed in a greenhouse in Indiana. This article will serve as a review of this important disease. The symptoms of bacterial canker vary considerably. In most cases, the edges of the leaves may turn yellow and/or brown. That is, the margins of the leaves may become chlorotic and/or necrotic (Figure 1). This symptom, which…Read more about Bacterial Canker of Tomato[Read More]
I have never had as many questions about how to use MELCAST as I did in 2015. The interest in this program is growing both here in Indiana and nationally. Read on to find out how to apply fungicides according to the weather and perhaps save money in the process. MELCAST (MELon disease foreCASTer) is…Read more about MELCAST 2016[Read More]
Cool season crops such as lettuce are becoming a more popular crop among Indiana greenhouse/high tunnel growers. One of the most important diseases of lettuce is known as lettuce drop. The symptoms of lettuce drop are often noticed after the thinning stage, early in the crop development. The early symptoms may include browning of leaves. Later…Read more about Lettuce Drop[Read More]
Updates to the MW Vegetable Production Guide for Commercial Growers 2016 (ID-56)-The table below gives the changes that have been made to the on-line version of the ID-56 as of this date. If you have purchased, or will purchase, a hard copy of this guide, please make these changes. If you use the ID-56, these…Read more about Updates to the 2016 MW Vegetable Production Guide for Commercial Growers[Read More]
New fungicide – I would like to announce the release of a new fungicide, Orondis® from Syngenta. It is a good product and should help commercial vegetable growers in combating downy mildew of cucurbits, Phytophthora blight of cucurbits, peppers and tomato, Buckeye rot of tomato and late blight of potato and tomato. However, I also want to…Read more about New Fungicide for Vegetables[Read More]