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• Bacterial leaf spot has been reported on savoy cabbage in southern New Jersey.
• Timber rot has been reported in greenhouse pepper in southern New Jersey. For more information on white mold on tomato and pepper click here.
• Cold weather injury has been reported in numerous vegetable crops throughout the state.
• Bacterial leaf blight in Cilantro was reported this week in southern New Jersey.
• Common leaf spot was reported in strawberry this past week. For more information click here.
• White rust and anthracnose have been reported in spinach over the past few weeks. For more information click here.
• Damping-off has been reported in pepper transplants this past week. For more information click here

Timber rot in greenhouse pepper

Bacterial leaf spot in savoy cabbage

Frost damage in strawberry (photo: T. Besancon)

The following video includes a review and update on important diseases for vegetable farmers in New Jersey.

Covered in this presentation are:

• Bacterial leaf spot in pepper and tomato
• Phytophthora blight
• Cucurbit downy mildew
• Pepper Anthracnose
• Cucurbit powdery mildew

Take-Home Extension Talk: Updates on important vegetable diseases.

Please click here: Take Home – PPA 4-17-20

For commercial growers, fungicide recommendations can be found in the 2020/2021 Mid-Atlantic Commercial Vegetable Production Recommendations Guide. The new guide available FREE on-line or can be purchased in hardcopy form through your county agricultural office in New Jersey. The complete 2020/2021 Vegetable Production Recommendations guide or specific sections can be downloaded depending on your production needs.

• Bacterial leaf blight in Cilantro was reported this week in southern New Jersey.
• Common leaf spot was reported in strawberry this past week. For more information click here.
• White rust and anthracnose have been reported in spinach over the past few weeks. For more information click here.
• Damping-off has been reported in pepper transplants this past week. For more information click here.

• All cucurbit growers are encouraged to scout their fields on a regular basis and continue to use a downy mildew specific fungicide program. Fungicides that are specific to CDM should be included in weekly fungicide maintenance programs for cucurbit powdery mildew control. To track the progress of CDM in the US please visit the CDMpipe forecasting website here.
• Basil downy mildew has been reported in New Jersey on BDM susceptible and resistant sweet basil lines. All basil growers should continue to scout and follow a BDM specific fungicide program even when using DMR varieties. To track the progress of BDM in the US please visit here.
• Downy mildew has been reported in turnip greens. Growers who have fall leafy greens and cole crops should scout daily and be proactive and initiate a regular downy mildew specific fungicide program. Although its been relatively dry, spotty showers, cooler nights, and longer periods of dew (leaf wetness) have made conditions ideal for downy mildew development across a number of susceptible crops.
• Pepper anthracnose continues to be reported.
• The 2019 Fungicide Resistance Management Guide for Vegetable Crops in the mid-Atlantic Region is now available for FREE online.
• For more information on controlling these and other important diseases please see the 2019 Mid-Atlantic Commercial Vegetable Production Guide. The guide is available for FREE online by following the links on the Plant and Pest Advisory website. Hardcopies of the 2019 guide can be purchased through your local county Extension office.

• Cucurbit downy mildew has been reported on butternut squash in Gloucester County this week. All cucurbit growers are encouraged to scout their fields on a regular basis and to initiate a downy mildew specific fungicide program. This is the first report of CDM in butternut squash in New Jersey this growing season. To track the progress of CDM in the US please visit the CDMpipe forecasting website here.
• There have been no reports of late blight in the region to date. Phytophthora nicotianae has been reported in the region in recent weeks. Symptoms caused by P. nicotianae look similar to late blight. If you suspect late blight on potato or tomato please contact your county Extension office.
• Basil downy mildew has been reported in southern New Jersey on BDM susceptible sweet basil lines. All basil growers are encouraged to initiate a BDM specific fungicide program. To track the progress of BDM in the US please visit here.
• Black leg symptoms have been reported on potato vines. Growers should dig up a few hills with aerial black leg symptoms to see if bacteria has worked its way into developing tubers. If tubers “stink” then traditional black leg is present. If rotten tubers are present and have no smell, please contact your County agent so samples can be collected and tested.
• Bacterial leaf spot has been reported in tomato and pepper.
• Phytophthora blight has been reported in pepper and other crops.
• Angular leaf spot has been reported on cucurbit crops. Click here for a nice review of diagnosing angular leaf spot, bacterial leaf blight, downy mildew, and anthracnose in cucurbit crops from Dr. Beth Gugino, vegetable pathologist, at Penn State.
• Cucurbit powdery mildew has been reported. Apply and rotate fungicides that are specific for CPM control.
• The 2019 Fungicide Resistance Management Guide for Vegetable Crops in the mid-Atlantic Region is now available for FREE online.
• For more information on controlling these and other important diseases please see the 2019 Mid-Atlantic Commercial Vegetable Production Guide. The guide is available for FREE online by following the links on the Plant and Pest Advisory website. Hardcopies of the 2019 guide can be purchased through your local county Extension office.