Eastern New York Commercial Horticulture Enrollment

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Early Season Tomato Leaf Symptoms

Amy Ivy, Vegetable Specialist
Eastern New York Commercial Horticulture

June 25, 2014

Once tomatoes are over their initial transplant shock and begin to push out new growth, growers often breathe a sigh of relief. Most growers got their plants in later than they would have liked but finally, whether inside a tunnel or out in the field, the plants are really taking off.
Tunnel grown tomatoes get more attention from growers than field grown but itís always a good idea to pay close attention to all your crops in an effort to catch problems early on. Here are a few leaf symptoms that may catch your eye this month. Remember you can call on any of us in the Eastern NY program to help you diagnose whatís going on.
Leaf Roll (photo A) has a dramatic look and comes on suddenly, causing quite a shock to many growers. Luckily itís a physiological response to stress and the plants should grow out of it. It occurs most commonly the day after a heavy pruning in tunnels. If the soil is dry when you do the pruning, the stress will be even greater. Try to get into the habit of pruning a little bit every week, rather than one big pruning job less often. Sometimes it canít be helped so make sure your plants have a good soaking and let them grow out of it.
Virus-like symptoms (photo B) are more subtle but very distinctive. Where leaf roll is usually a lengthwise curling of full-sized leaves, the various virus diseases cause cupping, oddly scalloped and cut, and odd color patterns on the leaves. This photo shows one example of what a virus can do to leaves, there are other variations but there is a similar oddity to them that makes them distinctively viral.
Magnesium deficiency (photo C) can be startling but this is not an issue. It starts on the lowest leaves and works up the plant very gradually. It first appears when the first fruit clusters begin sizing up and as long as basic nutrient needs are being met, it is not a concern. Tunnel grown tomatoes push out vigorous growth and can become deficient more quickly than field grown. A foliar sample will give you much more accurate information. Epsom salts and sul-po-mag are some sources of supplemental magnesium.


Leaf Roll (pdf; 442KB)

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Eggplant

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Ethnic Vegetables

Ethnic Vegetables

Garlic

Garlic

Grapes

Grapes

Horseradish

Horseradish

Kohlrabi

Kohlrabi

Leeks

Leeks

Lettuce / Leafy Greens

Lettuce / Leafy Greens

Melons

Melons

Nectarines

Nectarines

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Onions

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Pumpkins / Gourds

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Radishes

Raspberries / Blackberries

Raspberries / Blackberries

Rhubarb

Rhubarb

Rutabaga

Rutabaga

Snap Beans

Snap Beans

Squash - Summer

Squash - Summer

Squash- Winter

Squash- Winter

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Sweet Corn

Sweet Corn

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Upcoming Events

October Last Monday Grant Webinar for Fruit and Vegetable Growers

October 28, 2019
4:00 pm

Are you curious about what grants are available to help your farm business?

To help disseminate information on grants on a consistent basis, ENYCH is offering a "current grants" webinar on the last Monday of every month at 4:00pm

Each month's webinar focuses on 1 grant.  The October webinar topic is TBD but might feature Ag Labor Housing Grants.
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Produce Safety Alliance FSMA Grower Training Course

October 30, 2019
8am - 5pm
Canajoharie, NY

A grower training course developed by the Produce Safety Alliance (PSA) that meets the regulatory requirements of the Food Safety Modernization Act (FSMA) Produce Safety Rule.  At least one person per farm producing more than $25,000 worth of fruits and vegetables must attend this course once.  Participants will receive a certificate of course completion by the Association of Food and Drug Officials. 

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Tarping for Reduced Tillage Workshop

November 2 - November 19, 2019

Are you a vegetable farmer already using tarps? Or are you wondering if and how tarps could work best on your farm?

The Cornell Small Farms Program is excited to announce a series of workshops on tarping for reduced tillage in small-scale vegetable systems, to be held in Maine and New York this fall. The Reduced Tillage (RT) project of the Cornell Small Farms Program supports farmers in adopting scale-appropriate RT practices that can lead to healthy, productive soils and greater profitability. Through the evaluation of novel tools and methods using systems-based field research and on-farm trials, the project helps farmers learn about the approaches that can work for their farm. This work is accomplished in collaboration with the University of Maine, and with support from Northeast SARE.

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Announcements

Resources from CCE ENYCHP!

We are developing new ways to connect with the CCE ENYCHP team this year! We have a Youtube page located at this link. Check out videos on Table Grape Production, Pest Updates and the 20 Minute Ag Manager - in 4 Minutes series

We have a Facebook Page here as well as an Instagram page. We keep these places updated with current projects, events, and other interesting articles and deadlines.

There are also text alerts available. Fruit and vegetable farmers in 17 Eastern NY counties can now receive real time alerts on high risk disease and pest outbreaks texted directly to their cell phone. The Eastern NY Commercial Horticulture program, which is supported by local Cornell Cooperative Extension associations, will now offer text alerts to those that enroll in our program in 2019. 

The text alerts will be reserved for important crop alerts that could impact management decisions immediately. For instance, if there were an outbreak of Late Blight in the area, this would be transmitted to vegetable growers.

Farmers can choose the crop for which they wish to receive updates. Additionally they can request that Ag Business Alerts be sent to them. These alerts might include due dates for crop insurance deadlines, market opportunities etc.

If you have questions, please contact enychp@cornell.edu


Podcasts

Climate Change Adaptations

September 30, 2019
In this episode regional vegetable specialist Elisabeth Hodgdon interviews University of Vermont PHD student Alissa White about a series of interviews with growers in the north east concerning climate change adaptations.

Listeners can access Alissa White’s climate change adaptation survey report and additional information on the project by clicking on the following link:

https://adaptationsurvey.wordpress.com/results/
Alissa’s project was sponsored by a Northeast SARE Graduate Student Grant (GNE17-163).

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