Cornell Vegetable Program Enrollment

Program Areas

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  • Cultural Practices

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  • Educational Meetings & Conferences
  • In-Field Educational Opportunities
  • On-Farm Research Trials

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2022 Cornell Onion Fungicide Cheat Sheets for Control of Leaf Diseases

Christy Hoepting, Extension Vegetable Specialist
Cornell Vegetable Program

July 5, 2022

This sheet provides relative performance rankings for Botrytis leaf blight and Stemphylium leaf blight of the main fungicide options that may be used in New York to control these diseases, based on recent on-farm fungicide trial results, which reflect reduced efficacy of SLB due to development of fungicide resistance.

The 2022 Onion Fungicide Cheat Sheet for Control of Leaf Diseases in New York includes active ingredients, FRAC codes, rating for risk of fungicide resistance, activity on downy mildew, and maximum use rates.

The 2022 Relative Performance of Fungicides Including Tank Mixes for Control of Botrytis Leaf Blight and Stemphylium Leaf Blight Cheat Sheet provides an easy-to-read ranking of the relative efficacy of the treatment options and their FRAC groups.



2022 Onion Fungicide Cheat Sheet for Control of Leaf Diseases in New York (pdf; 302KB)

2022 Performance of Fungicides Including Tank Mixes for Control of BLB and SLB (pdf; 276KB)

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Asparagus

Asparagus

Beets

Beets

Broccoli

Broccoli

Brussels Sprouts

Brussels Sprouts

Cabbage

Cabbage

Carrots

Carrots

Cauliflower

Cauliflower

Cucumbers

Cucumbers

Dry Beans

Dry Beans

Eggplant

Eggplant

Ethnic Vegetables

Ethnic Vegetables

Garlic

Garlic

Horseradish

Horseradish

Kohlrabi

Kohlrabi

Leeks

Leeks

Lettuce / Leafy Greens

Lettuce / Leafy Greens

Melons

Melons

Onions

Onions

Parsnips

Parsnips

Peas

Peas

Peppers

Peppers

Potatoes

Potatoes

Pumpkins / Gourds

Pumpkins / Gourds

Radishes

Radishes

Rhubarb

Rhubarb

Rutabaga

Rutabaga

Snap Beans

Snap Beans

Squash - Summer

Squash - Summer

Squash- Winter

Squash- Winter

Sweet Corn

Sweet Corn

Sweet Potatoes

Sweet Potatoes

Tomatoes

Tomatoes

Turnips

Turnips

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Upcoming Events

Vegetable Pest and Cultural Management Meeting for Auction Growers (Ontario)

Event Offers DEC Credits

June 27, 2023
Rushville, NY

This on-farm meeting will feature pest management in fresh market vegetables in both field and greenhouse (high tunnel) vegetables, primarily for those growing for wholesale auction. A hands-on demonstration of weed, insect and disease identification in vegetables including management options such as inter-row cover crops, grafting and, where appropriate, spray options will be used to educate growers. Details on each topic will focus on field observations at the farm.

DEC recertification credits will be offered (1.75 credits in categories 10, 1a, 23, 24). 

view details

Vegetable Pest and Cultural Management Meeting for Auction Growers (FLPA)

Event Offers DEC Credits

July 12, 2023
Penn Yan, NY

This meeting will feature pest management in fresh market vegetables in both field and greenhouse (high tunnel) vegetables, primarily for those growing for wholesale auction. A hands-on demonstration of weed, insect and disease identification in vegetables including management options such as inter-row cover crops, grafting and, where appropriate, spray options will be used to educate growers. 

DEC recertification credits will be offered (1.75 credits in categories 10, 1a, 23, 24). 

view details

Vegetable Pest and Cultural Management Meeting for Auction Growers (Seneca)

Event Offers DEC Credits

August 2, 2023
Romulus, NY

This meeting will feature pest management in fresh market vegetables in both field and greenhouse (high tunnel) vegetables, primarily for those growing for wholesale auction. A hands-on demonstration of weed, insect and disease identification in vegetables including management options such as inter-row cover crops, grafting and, where appropriate, spray options will be used to educate growers. 

DEC recertification credits will be offered (1.75 credits in categories 10, 1a, 23, 24). 

view details

Announcements

Ag Water Test Sample Drop-Off Sites in WNY

If you are curious about the quality of your irrigation ponds, streams, wells, or other surface water source, water testing is an important tool to consider. Getting the right test and doing so in a timely manner has been a challenge. Water testing that provides meaningful results requires a quantified generic E. coli test or an Enumeration E. coli test. Some water testing labs only do a potable water test called a presence/absence test. The Enumeration test provides test results as in numbers of (bacterial) colony forming units (CFU or most probable number MPN). Having a number allows you to track the results with a comparable baseline. Each water source should be tested 3-4 times a season and do this each growing season.

Water testing drop-off/pick-up sites have been set up in a number of locations across the region by Lozier Environmental Consulting in Rochester. Water test sample bottles, forms, and information are available at each site. Additional sites are available:
  • A new site has been added in the greater Lockport (Niagara County) area: Flint Brothers Hardware, 2769 Main St, Newfane, NY, 716-778-9654. Samples must be received at this location by Wednesday 9:00am.
  • If you are in Ontario County, contact Nancy Anderson at the CCE Ontario County office in Canandaigua at 585-394-3977 x427. You can pick up the supplies (forms, bottles, instructions, and takes payment) at the CCE office. You will be required to take your sample(s) to a drop-off site in Canandaigua; the bottles will be picked up and delivered to Life Science Labs in Syracuse for analysis.
For assistance in understanding the water test results, contact Robert Hadad or the lab.


New Ag Climate Factsheet Released

The intersection of agricultural production and greenhouse gases is gathering increasing attention. This is an opportune time to consider how vegetable production interacts with carbon sequestration and greenhouse gas emissions, and how using cover crops may alter this picture.

The factsheet, Greenhouse Gases and Soil Organic Carbon in Vegetable Production and the Role of Cover Crops, written by Zach Spangler, Ag Climate Resiliency Specialist with CCE Harvest NY, and Elizabeth Buck, Fresh Market Vegetable Specialist, CCE Cornell Vegetable Program, discusses:
  • Sequestration of atmospheric carbon in agricultural soils as soil organic carbon (SOC). Is vegetable production impacting SOC?
  • Net greenhouse gas emissions of carbon dioxide (CO2), nitrous oxide (N2O), and methane (CH4) from the soil.
  • Impact of cover crops on soil organic carbon, nitrous oxide emissions, and other GHG emissions.


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