Farm Research Helps New York High Tunnel Tomato Growers With Leaf Mold

New York-grown tomatoes in 2013 were estimated at a value of $32.4 million, according to the Cornell 2013 Vegetable Summary. The Northern New York Agricultural Development Program (NNYADP) has issued a new resource to help tomato growers cope with a fungal disease that has become increasingly troublesome for greenhouse and high tunnel growers across New York state.

Cornell Vegetable Specialist Judson Reid checks high tunnel tomatoes.
Cornell Vegetable Specialist Judson Reid checks high tunnel tomatoes.

With NNYADP funding, Amy Ivy, a regional vegetable specialist with the Eastern New York Commercial Horticulture Program, developed a four-page fact sheet with leaf mold prevention and control tips for growers.

Leaf mold favors the higher humidity conditions found in greenhouses and high tunnels. The fungus spreads rapidly, defoliating plants, which severely reduces yield. The Cornell 2013 Vegetable Summary indicated that greenhouse and high tunnel production is on the rise in New York with structures ranging in size from one-tenth of an acre to more than 40 acres.

Fungicide sprays have not been effective in stopping the spread of leaf mold. Ivy suggests improving ventilation, plant spacing, pruning, and training to reduce the risk. The Leaf Mold in High Tunnel Tomatoes Fact Sheet identifies a number of leaf mold-resistant varieties of cherry, grape, and salad tomatoes, as well as the more popular varieties that are susceptible to the disease.

“Each year plant breeders are developing varieties with greater resistance to leaf mold, but the fungus continues to mutate, making it very challenging for growers. Planting several different varieties each season may help reduce the risk of crop and economic loss,” Ivy says.

Heirloom varieties of tomatoes are particularly at risk as none are leaf-mold resistant. The new fact sheet also includes photos of other types of tomato diseases that are leaf mold look-alikes. The farmer-driven Northern New York Agricultural Development Program funds on-farm research and technical assistance for farmers in the six northernmost counties of New York State: Clinton, Essex, Franklin, Jefferson, Lewis, and St. Lawrence.

Growers seeking assistance in diagnosing leaf mold or other problems in their crops may contact the local Cornell Cooperative Extension office.

Source: Northern New York Agricultural Development Program news release

Topics: , , ,

Leave a Reply

Protected Agriculture Stories
Blueberries under high tunnels
Protected Agriculture
January 4, 2016
Online Course For Year-Round High Tunnel Production Tactics
Michigan State University (MSU) educators will provide hoop house and high tunnel users with cropping information and management strategies. Read More
Hydroponic-managed citrus trees at UF/IFAS CREC
Insect & Disease Update
December 17, 2015
Growers, Scientists Seeking Shelter From Citrus Greening
Researchers are studying the fit for screenhouse production to exclude psyllids. Read More
Tomatoes_generic
Protected Agriculture
December 3, 2015
The Flavor Dilemma When Comparing Apples To Greenhouse Tomatoes
Focus more on the flavor of your greenhouse tomatoes and de-emphasize yield — for now. Read More
Increased customer demand led Good Harvest Farms to add hydroponic lettuce in 2000.
 Photo credit: Nexus Corp.
Protected Agriculture
November 2, 2015
Do Your Homework When Shifting To Veggies
Ornamental grower Good Harvest Farms began growing hydroponic lettuce 15 years ago. Owner Chris Powell says having a reliable market and emphasizing quality are critical. Read More
Variety of crops inside high tunnel-riased beds for web
Production
October 30, 2015
Key Considerations When Growing Under Cover
Some critical points to think about before adding a controlled environment component to your operation include market, structures, crop choice, and labor. Read More
Local Appetite produces hydroponic lettuce and other leafy greens in high tunnels.
Photo credit: Local Appetite Growers
Protected Agriculture
October 30, 2015
Making The Move To Protected Agriculture
High tunnels have helped one Alabama grower produce high-quality crops year-round while providing a significant return on investment. Read More
This row of tomatoes with large fruit load is part of an on-going project with DeRuiter Seed Co. 
for variety trial testing for 
semi-arid, high-light regions. 
Photo Credit: UA-CEAC/DeRuiter Seed Co.
Production
October 29, 2015
5 Trends In Protected Ag Or Controlled Environment Agriculture
Take these trends into consideration if you plan to grow under cover or want to expand your operation. Read More
The Latest
Protected Agriculture
February 2, 2016
Researchers To Study The Benefits Of Mov…
The potential advantages of the movable structures compared to field production and permanent high tunnel structures will be evaluated. Read More
Production
January 14, 2016
State Of The Vegetable Industry Survey S…
Vegetable growers embark on 2016 with cautious optimism as many plan to either increase production or keep their acreage the same as last year. Read More
Protected Agriculture
January 12, 2016
NatureFresh Farms Breaks Ground For Phas…
Fifteen-acre facility to be completed this summer; plans for the site call for Phase III to begin construction this spring. Read More
Protected Agriculture
January 4, 2016
Online Course For Year-Round High Tunnel…
Michigan State University (MSU) educators will provide hoop house and high tunnel users with cropping information and management strategies. Read More
Insect & Disease Update
December 17, 2015
Growers, Scientists Seeking Shelter From…
Researchers are studying the fit for screenhouse production to exclude psyllids. Read More
Protected Agriculture
December 3, 2015
The Flavor Dilemma When Comparing Apples…
Focus more on the flavor of your greenhouse tomatoes and de-emphasize yield — for now. Read More
Protected Agriculture
November 2, 2015
Do Your Homework When Shifting To Veggi…
Ornamental grower Good Harvest Farms began growing hydroponic lettuce 15 years ago. Owner Chris Powell says having a reliable market and emphasizing quality are critical. Read More
Production
October 30, 2015
Key Considerations When Growing Under Co…
Some critical points to think about before adding a controlled environment component to your operation include market, structures, crop choice, and labor. Read More
Protected Agriculture
October 30, 2015
Making The Move To Protected Agriculture
High tunnels have helped one Alabama grower produce high-quality crops year-round while providing a significant return on investment. Read More
Production
October 29, 2015
5 Trends In Protected Ag Or Controlled E…
Take these trends into consideration if you plan to grow under cover or want to expand your operation. Read More
Production
September 28, 2015
New Hampshire Researchers Develop New Ch…
The tomato is designed to grow in hanging baskets in greenhouses. Read More
Protected Agriculture
August 25, 2015
Disease Resistance Is A Priority In Gree…
When choosing varieties for the greenhouse keep in mind that they are bred for greenhouse conditions, such as lower light, higher humidity, and higher temperature. Read More
Production
June 1, 2015
8 Production Tips For Greenhouse Product…
This month, I’d like to offer eight “quick and dirty” tips that will help beginning growers as well as seasoned Read More
Production
June 1, 2015
Low Tunnels Aid In Overwintering Onions
Inexpensive structures provide surprising winter protection and potential marketing opportunities in cold climates. Read More
Production
May 31, 2015
Year-Round Production With High Tunnels
Producing crops year-round may be business as usual for growers in places like California and Florida, but for a small-scale Read More
Production
May 28, 2015
NMSU Researchers Use Protected Agricultu…
The demand for safe, nutritious, affordable local food, particularly for fresh fruits and vegetables, is rising in New Mexico. However, Read More
Protected Agriculture
May 20, 2015
Interest Continues To Grow In Protected …
Inside move could put producers in prime scoring position. Read More
Citrus
May 19, 2015
Bad Weather Or Not, Preparation Always O…
You cannot prevent a natural disaster from taking everything you have, but you can lessen the blow if and when it happens. Read More
[gravityform id="62" title="false" description="false"]