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Updated: September 16, 2021
Corky Root Disease in Tomatoes
Corky root is caused by the fungus Pyrenochaeta lycopersici. Tomato plants affected with corky root may appear stunted and generally lack vigor.
Updated: September 16, 2021
Fusarium Wilt in Basil
Usually when anyone talks about basil problems they talk about basil downy mildew, but there are unfortunately other disease problems with basil that are important and need to be managed.
Updated: September 16, 2021
Why So Little Yellow Shoulders in Tomatoes This Year?
Normally at this time of year, I’d be writing about how bad yellow shoulders and other fruit ripening problems are in Maryland tomatoes. But this has been a strange season with May weather in March and March weather in May, which caused a great deal of catfacing problems this year. However, except for a few fields in a few places there have been far fewer troubles with tomato yellow shoulders or fruit ripening problems than we normally see this time of year—at least for now. Why is this?
Updated: September 16, 2021
White Rot of Onion and Garlic
The weather we had in May was great for seed maggots and for some soil diseases. One very serious soil disease that affects Allium species, especially onion and garlic, is white rot, caused by the fungus Stromatinia cepivorum (syn. Sclerotium cepivorum (fig. 1)), which was found in the last few weeks in Maryland.
Updated: September 16, 2021
Vegetable Fertility
Vegetable Fertility
Updated: September 16, 2021
Using Silicon, Stimplex and Plant Resistance in Pumpkin Production Systems to Reduce Plant Disease Loss
Using Silicon, Stimplex and Plant Resistance in Pumpkin Production Systems to Reduce Plant Disease Loss
Updated: September 16, 2021
Using Nitrate-N Petiole Sap-Testing for Better Nitrogen Management in Vegetable Crops
Vegetables have a relatively high nitrogen requirement and at times growers apply too much fertilizer-N that contributes to ground and surface water pollution. Fertilization can be made more efficient by plant analysis. Plant tissue (petiole) nitrate testing is a way of monitoring the nitrogen condition of the crop during the growing season. This is an especially useful method as the petiole is a very good indicator of current N supply and management practices such as fertigation allow for corrective measures when deficiencies are found.
Updated: September 16, 2021
Tomato Ripening Problems and the Role of Potassium
Over the last few months in our area there have appeared problems with tomato ripening. The ripening problems are called various names such as blotchy ripening, yellow shoulder, grey wall, internal whitening, etc. (fig 1).
Updated: September 16, 2021
Tomato Ripening Problems and Cucumber Beetles
Several growers have complained that their second set of tomatoes is catfaced or are deformed and ripening poorly. Their first set of tomatoes looked good, but the second set is having problems in scattered areas throughout the field.
Updated: September 16, 2021
Tomato Plastic Mulch and Shade Study 2012
Tomato plants were transplanted on 7 May 2012 into black (grower standard), white or reflective plastic mulch.
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