Archives for May 2016

May 20, 2016

Potato | Tomato Disease Forecast 5-20-16

Click to View | Download Report 5-20-16

Potato Disease Forecasting Report

We will be tracking DSVs for Late blight development and calculating P-days for initiating the first early blight fungicide application.

The first late blight fungicide application is recommended once 18 DSVs accumulate from green row. Green row typically occurs around the first week in May in southern New Jersey. An early season application of a protectant fungicide such as mancozeb (Dithane, Manzate, Penncozeb) or Bravo (chlorothalonil) as soon the field is accessible is suggested. Please be vigilant and keep a look out for suspect late blight infections on young plants. No late blight has been reported in our region to date.

Remember the threshold for P-days is 300!  Once 300 P-days is reached for your location early blight fungicide applications should be initiated. Growers who are interested in using this model should chose the location above that is closest in proximity to their farming operation and should regularly check the Cornell NEWA website (http://newa.cornell.edu/) where this information is compiled from. Click on Pests Forecasts from the menu, select your weather station, and click on tomato diseases, set accumulation start date and a table of daily and total DSVs will be generated.

Tomato Disease Forecasting Report

Disease severity values (DSVs) for early blight, septoria leaf spot, and tomato anthracnose development are determined daily based on leaf wetness (due to rainfall, dew) and air temperature.

On a daily basis DSV values can range from 0 to 4 where 0 = no chance for disease development to 4 = high chance for disease development.
DSVs are accumulated during the production season.

Fungicide applications are based on an individually determined DSV threshold. The first fungicide application for the control of these three diseases is not warranted until 35 DSVs have accumulated from your transplanting date. After that, growers can base fungicide applications on different DSV thresholds.

Filed Under: Disease Forecasting
May 18, 2016

Veg IPM Update: Week Ending 5/18/16

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Sweet Corn

A few European corn borer (ECB) adults are being captured now, despite cool conditions.  At the present, areas of highest activity include Cumberland, Gloucester and Salem counties (see ECB map), although scattered individuals have been captured as far north as Morris County.  Cooler nights for the rest of this week may suppress catches for the next several days.   Most early sweet corn plantings are too young to support ECB larval infestations. However, over the next three weeks we should begin to see feeding in the most advanced plantings. Be sure to begin monitoring the earliest plantings for ECB feeding while they are still in the whorl stage.  [Read more…]

Filed Under: Vegetable Crops
May 17, 2016

RCE Hosting a “Pollinator Victory Garden” Workshop

Rutgers Cooperative Extension of Cape May County is hosting “The Pollinator Victory Garden: Winning the War on Pollinator Decline” on Wednesday, June 8 from 5:30 to p.m., rain or shine, at Rutgers Cooperative Extension, 355 Court House – South Dennis Road, Cape May Court House, New Jersey.

 Participants will learn how to attract an array of pollinators, what plants they eat, how to provide them with shelter, and how to help win the war on pollinator decline.  Also, each recipient will receive starter plants for their victory garden. Kim Eierman, Environmental Horticulturist and founder of EcoBeneficial will be presenting. Eierman specializes in ecological landscapes and native plants. She teaches at the New York Botanical Garden, Brooklyn Botanic Garden, The Native Plant Center in NY, Rutgers Home Gardeners School and others.  In addition to being a Certified Horticulturist through the American Society for Horticultural Science, Eierman is a Master Gardener, a Master Naturalist, an Accredited Organic Landcare Professional, a Steering Committee member of The Native Plant Center and a member of the Garden Writers Association.

 This is a beginner class, therefore, no experience is needed.  The cost for this workshop is $25 and includes dinner and all materials.  Registration is due by June 1, 2016.  To register or for more information, please call 609-465-5115, ext. 607 or email dana.tyndall@co.cape-may.nj.us

See official flyer  here.

 

Filed Under: Commercial Ag Updates, Organic Production Tagged With:
May 17, 2016

Late blight confirmed on tomato in Western Maryland – 5/17/16

Late blight (US23) was confirmed on tomato in a small, retail greenhouse operation in western Maryland (Garrett Co.) today. This is the first report of Late blight on tomato or potato this growing season. US23 has been the most prevalent genotype found in the region the last few years and can infect tomato or potato. While the current report not an immediate threat to NJ, all tomato and potato growers should scout fields on a regular basis as long as wet weather pattern continues. At this time, general protectant fungicide programs that have been initiated will help protect against Late blight. Importantly, in order for Late blight to appear this early in our region it must either have survived on an infested potato tuber left in the field or in a cull pile. For more information on the control of late blight please see the 2016 Mid-Atlantic Commercial Production Recommendations Guide.

Filed Under: Commercial Ag Updates, Disease Forecasting, Organic Production, Vegetable Crops Tagged With: ,
May 16, 2016

Potato | Tomato Disease Forecast 5-17-16

Click to View | Download Report 5-17-16

Potato Disease Forecasting Report

We will be tracking DSVs for Late blight development and calculating P-days for initiating the first early blight fungicide application.

The first late blight fungicide application is recommended once 18 DSVs accumulate from green row. Green row typically occurs around the first week in May in southern New Jersey. An early season application of a protectant fungicide such as mancozeb (Dithane, Manzate, Penncozeb) or Bravo (chlorothalonil) as soon the field is accessible is suggested. Please be vigilant and keep a look out for suspect late blight infections on young plants. No late blight has been reported in our region to date.

Remember the threshold for P-days is 300!  Once 300 P-days is reached for your location early blight fungicide applications should be initiated. Growers who are interested in using this model should chose the location above that is closest in proximity to their farming operation and should regularly check the Cornell NEWA website (http://newa.cornell.edu/) where this information is compiled from. Click on Pests Forecasts from the menu, select your weather station, and click on tomato diseases, set accumulation start date and a table of daily and total DSVs will be generated.

Tomato Disease Forecasting Report

Disease severity values (DSVs) for early blight, septoria leaf spot, and tomato anthracnose development are determined daily based on leaf wetness (due to rainfall, dew) and air temperature.

On a daily basis DSV values can range from 0 to 4 where 0 = no chance for disease development to 4 = high chance for disease development.
DSVs are accumulated during the production season.

Fungicide applications are based on an individually determined DSV threshold. The first fungicide application for the control of these three diseases is not warranted until 35 DSVs have accumulated from your transplanting date. After that, growers can base fungicide applications on different DSV thresholds.

Filed Under: Disease Forecasting
May 16, 2016

Basil downy mildew – 24c’s granted for Subdue Maxx and Heritage use in greenhouse

Special local needs labels (24c) have been granted for the use of Subdue Maxx (mefenoxam, 4) and Heritage (azoxystrobin, 11) for downy mildew (Peronospora belbahrii) on basil transplants grown for resale to consumers in New Jersey. Micora (mandipropamid, 40) also has a supplemental label for the control of basil downy mildew in the greenhouse. In order to use these fungicide, growers must have in their possession the 24c labels. Please see label for specific rates, REI’s, and PHI’s. Please here click on Subdue Maxx, Heritage, or Micora for links to the 24c label.

Filed Under: Commercial Ag Updates, Vegetable Crops Tagged With: