- Cucurbit downy mildew. All cucurbit growers should scout their fields on a regular basis and inlcude a downy mildew specific fungicide to their weekly maintenance sprays.
- The 2018 FRAC Table for Cucurbit Downy and Powdery Mildew Control in the mid-Atlantic Region can be found and downloaded for FREE here and is essential for developing control strategies for both diseases.
- Bacterial stalk rot in sweet corn has been reported.
- Downy mildew has been reported in bok choy. Cole crops, as well as leafy greens, need to be scouted on a regular basis and preventative sprays applied as long as wet weather continues.
- Pepper anthracnose has been reported. If found in field, weekly fungicide maintenance sprays are needed. Abandoned fields should be mowed down immediately.
- Alternaria leaf spot has been reported on broccoli.
- Anthracnose has been reported in turnip.
- Late blight has been reported on tomato in Western PA. There have been no reports of late blight in the immediate region.
- Bacterial leaf spot and Phytophthora blight and fruit rot remain active in pepper and cucurbit crops.
- Cercospora leaf spot has been reported on swiss chard and beets.
- A nice article by Dr. Beth Gugino, Penn State, on gray mold and late blight in high tunnel tomatoes can be found here.
- Remember, copper applications on hot days with high relative humidity can cause phytotoxicity on a number of crops.
- Basil downy mildew is being reported. Recent weather has been ideal for its development. For more information on Rutgers newly-released DMR sweet basils Obsession, Devotion, and Thunderstruck please click here. Follow the Rutgers Basil Downy Mildew Breeding Program on Instagram at #RutgersBasil
