Late blight has been reported in tomato on an organic farm near Long Valley in Morris County, New Jersey. The cooler weather along with longer periods of leaf wetness lasting into the morning hours this time of year makes conditions ideal for potential Late blight development. As a reminder, once fields or blocks of tomatoes are finished, care should be taken to burn down, remove, or disc down the foliage. Fields left un kept can act as a source of inoculum. Tomato fields should be scouted on a regular basis. Regular protectant fungicide programs should continue as long as fields or blocks are in production. Organic tomato growers can apply an OMRI-approved copper fungicides to help suppress late blight development.
