These should be destroyed upon identification to help potential eliminate sources of innoculum. Older plants can easily be destroyed in place by cutting them off at ground level. Growers are advised to monitor whitefly populations , especially on older plantings where the efficacy of Admire applications may being to wear off. Several respondents are reporting l ow to moderate incidence of target spot especially in older plantings of tomato and where the crop is being picked as vine-ripe. Downy mildew as well as powdery mildew is being reported primarily on squash and cucumber from several locations.
Incidence is low to moderate and crop damage varies accordingly.
Gummy stem blight has caused significant losses in some plantings of fall watermelon . It has also been reported in cucumber and cantaloupe where the incidence is generally low and crop damage has been minimal. Isolated cases of fusarium crown rot on tomato have been reported from several sites. A number of growers have reported fairly widespread incidence of mosaic in squash . Incidence and severity ranges from low to moderate.