Two important topics were addressed by Dr. Nathan Kleczewski, Extension Specialist in Plant Pathology at the University of Delaware this week in the Weekly Crop Update. Phytophthora nictotiana, a late blight look-a-like, was found on potato in DE Explaining Late blight lineages in relationship to thier potential host and sensitivity to mefenoxam We have on occasion […]
Continue reading...July 12, 2015 Andy Wyenandt
Of Note from UDel: Late blight Look-a-like in Potato & Late blight Lineages
July 10, 2015 Andy Wyenandt
Verticillium Wilt in Eggplant
Verticillium wilt is a common soil-borne fungal pathogen that once it has infested soil can remain for a very long time. Verticillium wilt is caused by either Verticillium albo-atrium or Verticillium dahlia and has a wide host range (over 200 plant species). Both pathogens can survive (overwinter) as microsclerotia in the soil. Verticillium wilt prefers […]
Continue reading...July 10, 2015 Andy Wyenandt
Leaf Mold in Tomato
Leaf mold (formerly Fulvia fulva) has been confirmed in field-grown tomatoes in Cape May County. Leaf mold occasionally appears in high tunnel or greenhouse tomato production in New Jersey. However, under ideal conditions the disease will develop in field-grown crops. The fungus will cause infection under prolonged periods leaf wetness and when relative humidity remains […]
Continue reading...July 10, 2015 A.Wyenandt, W.Kline, and J.Ingerson-Mahar
Potato | Tomato Disease Forecast 7-10-15
Click to View | Download Report 7-10-15 Potato Disease Forecasting Report We will be tracking DSVs for Late blight development and calculating P-days for initiating the first early blight fungicide application. The first late blight fungicide application is recommended once 18 DSVs accumulate from green row. Green row typically occurs around the first week in May […]
Continue reading...July 9, 2015 Dean Polk
Fruit IPM Report 7-9-2015
Peach Oriental Fruit Moth (OFM): While we are still between flights, trap counts indicate a slight pick up of moth activity for the start of the 3rd flight. The first insecticides will be due by the middle of the month in southern counties and about a week later in northern counties. Time your sprays according […]
Continue reading...July 9, 2015 Kris Holmstrom and Joe Ingerson-Mahar
Veg IPM Update: Week Ending 7/8/15
Sweet Corn We are still between European corn borer (ECB) adult generations at this time. Very few individuals have been captured throughout NJ this past week (see ECB map). ECB infestations are almost gone from all sweet corn plantings. We would expect to see signs of the second flight within the next two weeks. As […]
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