Answer to Question from Last Issue (6-18-2020) July 1, 2020 - From Issue: 677 By: Dan Egel Read More What is causing the spots on the watermelon leaf? A) anthracnose B) early blight C) a contact herbicide The answer is that the leaf above has been affected by[Read More…] Article Categories: Cucurbits Watermelon Article Tags: Plant Disease Management
Downy Mildew in Southern Michigan July 1, 2020 - From Issue: 677 By: Dan Egel Read More Downy mildew has been observed on cucumber in Berrien County in extreme southwestern Michigan and in Monroe County in extreme southeast Michigan. The downy mildew spores that cause disease on[Read More…] Article Categories: Cucurbits Article Tags: Plant Disease Management
Cercospora Leaf Spot of Beet June 18, 2020 - From Issue: 676 By: Dan Egel Read More This disease was observed in a home garden recently on table beet (Figure 1). I was surprised considering how dry it has been. Cercospora leaf spot also affects swiss chard. Symptoms include circular leaf spots that[Read More…] Article Categories: Beets Swiss Chard Article Tags: Plant Disease Management
Answer to Question from Last Issue (6-3-2020) June 17, 2020 - From Issue: 676 By: Liz Maynard and Dan Egel Read More Question: Why are the water droplets arranged so evenly around the edge of this cucurbit leaf? Answer: The water droplets came out of pores that are at the edge of[Read More…] Article Categories: Vegetable Crops – General Article Tags: Plant Disease Management
Tomato Brown Rugose Fruit Virus (ToBRFV): A New Concern for Tomato and Pepper Producers June 3, 2020 - From Issue: 675 By: Dan Egel Read More Tomato brown rugose fruit virus (ToBRFV) is making headlines and eliciting USDA action. Growers need to learn more about ToBRFV biology, symptoms and control. Tomato brown rugose fruit virus (ToBRFV)[Read More…] Article Categories: Solanaceous Crops Peppers Tomato Article Tags: Plant Disease Management
Angular leaf spot of Cucurbits May 20, 2020 - From Issue: 674 By: Dan Egel Read More In the last issue of the Vegetable Crops Hotline, I wrote an article about common diseases of cantaloupe and watermelon transplants. Based on the samples I have received over the[Read More…] Article Categories: Cantaloupe Watermelon Article Tags: Plant Disease Management
Botrytis Gray Mold May 20, 2020 - From Issue: 674 By: Dan Egel and Wenjing Guan Read More Botrytis gray mold can cause disease on many different host plants, enabling the fungus to easily survive and disperse between crops. Host crops include flowers such as geraniums, vegetables such[Read More…] Article Categories: Solanaceous Crops Tomato Strawberry Article Tags: Plant Disease Management
Phytophthora Blight of Pepper in Midwest Vegetable Production Guide May 14, 2020 - From Issue: 674 By: Dan Egel In creating the new format of the Midwest Vegetable Production Guide for Commercial Growers 2020 (ID-56), I inadvertently left out the portion of the fruiting vegetable section that deals with[Read More…] Article Categories: Solanaceous Crops Peppers Article Tags: Plant Disease Management
Answer to Question from Last Issue (4-23-2020) May 6, 2020 - From Issue: 673 By: Dan Egel Read More 1. What caused the water-soaked stem of this watermelon transplant? A-damping-off B-gummy stem blight C-Lightening strike Correct Answer: B 2. Is this problem likely to spread to other transplants? Yes[Read More…] Article Categories: Cantaloupe Watermelon Article Tags: Plant Disease Management
Cantaloupe and Watermelon Transplant Diseases May 6, 2020 - From Issue: 673 By: Dan Egel Read More Many cantaloupe and watermelon growers are either growing transplants in a greenhouse or are expecting delivery of transplants in the next few weeks. Either way, growers should inspect transplants for[Read More…] Article Categories: Cucurbits Article Tags: Plant Disease Management
