It is odd that we would have a couple of reports of an unusual disease of brassicas turn up in the same week, but we did. Clubroot caused by Plasmodiophora brassicae is a major disease of brassica, i.e., broccoli, cabbage, turnip, rutabaga, and radish. It can also infect weeds in the mustard family as well as some grasses.
Most blueberry cultivars here in Maryland bloomed and green fruit are developing. Now is the time when a variety of pathogens and pest will begin to take up residence in your field which can harm your developing crop. It is important to perform routine scouting throughout your farm and make sure that you’re not seeing symptoms of some of the common pests and pathogens. Below is a description of several of the most common diseases and pests you may find at this time in your blueberries.
A root disease that is most commonly associated with potato has turned up on tomato in a high tunnel last week. This disease
goes by the delightful name of black dot root rot. The causal agent is Colletotrichum coccodes, which also causes
anthracnose fruit rot on tomato (sunken, water-soaked, circular lesions).