Downy mildew sporulating on the bottom side of an infected collard leaf. Note the white spore masses.
Continue reading...June 21, 2014 Andy Wyenandt
Vegetable Disease Briefs – 6/21/14
Basil downy mildew has been reported in New Jersey. With current weather conditions all basil growers should scout on a daily basis and taking appropriate preventative measures. Cucurbit downy mildew has been reported on cucumber as far north as central North Carolina as of 6/20. To track cucurbit downy mildew in the US please visit […]
Continue reading...June 21, 2014 Andy Wyenandt
Vegetable Disease Update – 6/21/14
Cole Crops Downy mildew and Alterneria were confirmed on collard greens this past week. Current weather conditions are ideal for the development of both diseases on all cole crops as well as other crops. Symptoms of downy mildew on cole crops include the production of white spore masses only on the undersides of infected leaves. […]
Continue reading...June 19, 2014 A.Wyenandt, W.Kline, and J.Ingerson-Mahar
Potato Disease Forecasting Report 6-20-14
Potato Disease Forecasting Report 6-20-14 – Click To Download 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 in southern […]
Continue reading...June 19, 2014 A.Wyenandt, W.Kline, and J.Ingerson-Mahar
Tomato Disease Forecasting Report 6-20-14
6-20-14 Tomato Report – Click to Download Disease severity values (DSVs) for early blight, septoria leaf spot, and tomato anthracnose development are determined daily based on leaf wetness (due to rainfall, dew) and air temperature. On a daily basis DSV values can range from 0 to 4 where 0 = no chance for disease development […]
Continue reading...June 19, 2014 Jim Murphy
Crabgrass Emerging
Crabgrass has been emerging for several weeks now, depending on the exposure. Warmer and more open turfs will likely have more advanced (larger) plants while cooler and denser turfs will have smaller plants. Management options for this weed at this point in the season range from doing nothing to postemergence herbicide applications.
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