Eastern New York Commercial Horticulture Enrollment

Program Areas

  • Food Safety
  • Variety Evaluation
  • Market Development
  • Pest Management
  • Cultural Practices

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  • Telephone / Email Consultations
  • Newsletter
  • Direct Mailings
  • Educational Meetings & Conferences
  • In-Field Educational Opportunities
  • On-Farm Research Trials

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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 it’s 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 what’s going on.
Leaf Roll (photo A) has a dramatic look and comes on suddenly, causing quite a shock to many growers. Luckily it’s 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 can’t 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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Beets

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Blueberries

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Broccoli

Brussels Sprouts

Brussels Sprouts

Cabbage

Cabbage

Carrots

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Cauliflower

Cauliflower

Cherries

Cherries

Cucumbers

Cucumbers

Dry Beans

Dry Beans

Eggplant

Eggplant

Ethnic Vegetables

Ethnic Vegetables

Garlic

Garlic

Grapes

Grapes

Horseradish

Horseradish

Kohlrabi

Kohlrabi

Leeks

Leeks

Lettuce / Leafy Greens

Lettuce / Leafy Greens

Melons

Melons

Nectarines

Nectarines

Onions

Onions

Parsnips

Parsnips

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Peaches

Pears

Pears

Peas

Peas

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Potatoes

Pumpkins / Gourds

Pumpkins / Gourds

Radishes

Radishes

Raspberries / Blackberries

Raspberries / Blackberries

Rhubarb

Rhubarb

Rutabaga

Rutabaga

Snap Beans

Snap Beans

Squash - Summer

Squash - Summer

Squash- Winter

Squash- Winter

Strawberries

Strawberries

Sweet Corn

Sweet Corn

Sweet Potatoes

Sweet Potatoes

Tomatoes

Tomatoes

Turnips

Turnips

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Upcoming Events

Blueberry Pruning Workshop

Event Offers DEC Credits

March 26, 2025
Altona, NY

Wednesday, March 26, 2025

10 am - noon

 Irona Berry Haven

1897 Alder Bend Rd, Altona, NY 12910

$10 per farm

1 DEC credit requested in categories 1A, 10, and 22

Join us at Jeffrey Guerin's berry farm for a morning of pruning demonstrations, pest and disease identification, and more. Bring your own pruners so that you can learn by doing! Dress warmly for our workshop, which will be held outdoors. In the case of severe weather on the 26th, the workshop will be held at the same time on the 27th. Light refreshments will be provided.


View Blueberry Pruning Workshop Details

Champlain Valley Apple Pest Management Refresher

Event Offers DEC Credits

March 27, 2025
Chazy, NY

Join us in Chazy on March 27th for some pest management updates, and to receive some additional pesticide recertification credits for your farm's certified applicators! We will be offering 2.25 DEC recertification credits in categories 22, 10, and 1A. Light refreshments will be provided, and lunch following the meeting (sponsored by Valent) is optional.

$5 per employee

View Champlain Valley Apple Pest Management Refresher Details

Blind Industry White Wine Tasting Workshop

April 1, 2025 : Blind Industry White Wine Tasting Workshop
Germantown, NY

This event is a blind wine tasting for ENY grape industry members to get feedback from fellow growers and Cornell Enologists on unfinished white wines (hybrid, vinifera, etc.)

We respectfully request that only professional winemakers or commercial vineyard owners attend, as space is limited. Limit two wines per winery/vineyard.

Pre-registration is required.  For questions, please contact Jeremy Schuster at jds544@cornell.edu

View Blind Industry White Wine Tasting Workshop Details

Announcements

2025 CCE ENYCHP Fruit and Vegetable Conference

Join us for the Annual Eastern NY Fruit and Vegetable Conference February 19th and 20th, 2025 at the Desmond Hotel and Conference Center, 660 Albany Shaker Road, Albany, NY 12211

We are back with two full days of informative sessions and over 10 DEC Pesticide Recertification Credits Available!  Sessions this year include Tree Fruit, Vegetables, Small Fruit, Grapes, Bedding Plants and other related topics and visit with more than 50 vendors! 

For the full program, CLICK HERE or to register, CLICK HERE!

Program Overview & DEC Pesticide Recertification Credits:
Wednesday, February 19, 2025:
  • Tree Fruit Session 1, 9:00 am - 12:00 pm 2.0 Credits in Categories 10, 1a and 22
  • Tree Fruit Session 2, 1:15 pm - 4:00 pm 1.75 Credits in Categories 10, 1a and 22
  • Small Fruit Session,  9:00 am - 12:00 pm - 2.0 Credits in Categories 10, 1a and 22
  • Grape Session, 8:50 am - 11:45 am - 1.0 Credits in Categories 10, 1a and 22
  • H2A, 1:15 pm - 3:50 pm

Thursday, February 20, 2025
  • Tree Fruit Session 3, 8:20 am - 12:00 pm - 0.5 Credits in Categories 10, 1a and 22
  • Bedding and Vegetable Transplants, 9:00 am - 11:30 am - 1.50 Credits in 10, 1a,24 and 23
  • Vegetable Session, 1:15pm - 3:50pm - 1.5 Credits in Categories 10, 1a, 21, 23 and 0.25 Core
  • Marketing Session, 8:50 am - 12:00 pm
  • Funding Opportunities, 1:15 pm - 3:30 pm
Hope to see you there!



Resources from CCE ENYCHP!


This website (https://enych.cce.cornell.edu/) contains our calendar of upcoming programs and registration links. For updated programmatic information, technical resources and links to newsletters please see our program blog site: https://blogs.cornell.edu/enychp/.
We also maintain the following online resources that you can view directly from these links:

• CCE ENYCH YouTube (program videos): https://www.youtube.com/channel/UCSk_E-ZKqSClcas49Cnvxkw

• CCE ENYCH Facebook (program social media): https://www.facebook.com/CCEENYCHP/

• CCE ENYCH Instagram (program social media): https://www.instagram.com/cceenychp/?hl=en


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