Important Vegetable Alert from RCE

Rutgers Cooperative Extension
New Jersey Agricultural Experiment Station

Plant and Pest Advisory
Vegetable Alert!!!!!
Date: 6/23/12 Alert Author: Andy Wyenandt
Pest: Late blight
Found: Late blight has been confirmed on processing tomato in Salem County, New Jersey.

Notes: Late blight was confirmed on actively sporulating leaf lesions from an 70 acre processing tomato field outside of Elmer, NJ. All lesions were found on the upper most leaves in the canopy suggesting Late blight was carried in from an outside source. This is the second report of Late blight in NJ on potato or tomato this year.

Crop(s) at risk: All tomato and potato crops.

Potential impact: Significant losses may occur if not controlled properly.

What growers should do: Control of late blight begins with regular scouting, recognizing symptoms and preventative fungicide applications. All potato and tomato growers in NJ should scout fields and include a late blight specific fungicide in their regular fungicide program. Although the weather this past week has not been ideal for late blight development in many areas of NJ (i.e., too hot), weather this coming week is going to be considerably cooler in the evenings and overnight.

Symptoms of Late blight mildew can be found here.

https://www.google.com/search?q=late+blight&hl=en&rlz=1C1CHKZ_enUS439US439&prmd=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=wvS8TqGI6rZ6gGvkq1B&ved=0CGoQsAQ&biw=1280&bih=702
Commercial fungicide recommendations for controlling late blight can be found in the 2012 Commercial Recommendations Guide below. All organic growers should consider applying a copper-based fungicide.

Links to the 2012 Commercial Vegetable Production Recommendations Guide.

Potato:

http://njveg.rutgers.edu/assets/pdfs/ppg/12ppg/2012-Sect-F-WhitePotato.pdf

Tomato:

http://njveg.rutgers.edu/assets/pdfs/ppg/12ppg/2012-Sect-F-Tomatoes.pdf
If you suspect late blight may be present on your farm, please let me know via email at wyenandt@aesop.rutgers.edu.

Thanks - Andy

Important Vegetable Alert

Rutgers Cooperative Extension at the New Jersey Experiment Station

Plant & Pest Advisory

Vegetable Alert!

Date: 5/30/12                                                Alert Author: Andy Wyenandt

Pest: Cucurbit downy mildew

Found: Cucurbit downy mildew has been confirmed on cucumber in areas near Swedesboro/Glassboro (Gloucester County). This is the first report of cucurbit downy mildew in the mid-Atlantic region this year.

Crop(s) at risk: all cucurbit crops in New Jersey.

Potential impact: Significant losses will occur if not controlled properly

What growers should do:
Control of cucurbit downy mildew begins with regular scouting, recognizing symptoms and weekly protectant fungicide applications. Now that downy mildew has been detected growers should scout on a daily basis and add a downy mildew specific fungicides to regular fungicide program. As a note, powdery mildew is also active in cucurbits.

 Remember, all abandoned cucumber and summer squash fields should be sprayed with gramoxone or disced under immediately after last harvest to kill the foliage! Abandoned fields left unattended after use will only serve as a source of inoculum for other fields once downy mildew makes its way into our area.

Please see the 2012 Commercial Vegetable Recommendations Guide for specific fungicide recommendations

To track the progress of cucurbit downy mildew in the eastern US and to keep up with reports of Downy mildew from other states please visit North Carolina State University’s Cucurbit Downy Mildew Forecasting Center at http://www.ces.ncsu.edu/depts/pp/ cucurbit/.

If you suspect downy mildew on your farm, please contact your county agent or Andy Wyenandt (856) 455-3100 ext 4144.

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Important Vegetable Alert

Rutgers Cooperative Extension

                New Jersey Agricultural Experiment Station

Plant & Pest Advisory

Vegetable Alert!

Date:   5/23/12                                               Alert Author: Andy Wyenandt

Pest: Late blight on potato in Burlington County (Central New Jersey)

Found: Late blight has been confirmed on potato in Burlington County, New Jersey.

Notes: Late blight was confirmed on actively sporulating leaf lesions from an 8 acre potato field in Cookstown, NJ (Burlington County). The few infected plants were found at the end of a row were the boom sprayer was most likely turned off. The grower had preventative applications of manzate followed by chlorothalonil prior. Seed pieces were sourced from Maine. This is the first report of Late blight in NJ on potato or tomato this year.

Crop(s) at risk: All potato (and tomato crops).

Potential impact: Significant losses may occur if not controlled properly.

What growers should do: Control of late blight begins with regular scouting, recognizing symptoms and preventative fungicide applications. All potato and tomato growers should scout fields and begin a regular preventative fungicide program if one has not been started. Adding a late blight specific fungicide to the tank mix should also be considered. Weather this past week has been ideal for late blight development in many areas of NJ (i.e., cool, wet, misty weather with heavy morning fogs).

Symptoms of Late blight mildew can be found here.

https://www.google.com/search?q=late+blight&hl=en&rlz=1C1CHKZ_enUS439US439&prmd=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=wvS8TqGI6rZ6gGvkq1B&ved=0CGoQsAQ&biw=1280&bih=702

Commercial fungicide recommendations for controlling late blight can be found in the 2012 Commercial Recommendations Guide below. Organic growers should consider applying a copper-based fungicide.

Potato:

http://njveg.rutgers.edu/assets/pdfs/ppg/12ppg/2012-Sect-F-WhitePotato.pdf

Tomato:

http://njveg.rutgers.edu/assets/pdfs/ppg/12ppg/2012-Sect-F-Tomatoes.pdf

If you suspect late blight may be present on your farm, please let me know via email at wyenandt@aesop.rutgers.edu.

Thanks - Andy

Legislators Fall Farm Visit

Mark Your Calendar
Burlington County Board of Agriculture
3rd Annual Legislator's Fall Farm Visit

Monday September 24, 2012
11:30 am Rain or Shine

Ev-Ry Farm
Mount Laurel, NJ

Watch for more info concerning this event
at a beautiful Burlington County Equine Farm