- Downy mildew remains active on all cucurbit crops. All cucurbit growers should include downy as well as powdery mildew specific fungicides in their weekly maintenance sprays. Please remember different modes-of-Action (i.e., FRAC groups) to help manage fungicide resistance develop in both pathogens. To track the progress of CDM in the US please visit http://cdm.ipmpipe.org/
- There have been no new reports of late blight in New Jersey since 8/14. Remember as fall approaches and night temperatures become cooler and light fogs begin to develop conditions for late blight development improve. All abandoned tomato blocks/fields need to be disked under as soon as harvesting is done or sprayed with gramoxone to kill all living foliage. To track late blight in the US please visit http://usablight.org/
- Bacterial leaf spot remains active on pepper and tomato crops. Bacterial canker on tomato has also been reported.
- Pepper anthracnose has been reported. All pepper blocks/fields where anthracnose is present and harvesting is completed need to disked under and/or sprayed with gramoxone as soon as possible. Infected plant material left in the field will only serve as a source of inoculum for further spread of the disease.
August 28, 2015