Cornell Vegetable Program Enrollment

Program Areas

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  • Variety Evaluation
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  • Cultural Practices

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  • Educational Meetings & Conferences
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  • 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

Asparagus Variety Trial Open House

May 23, 2024
Batavia, NY

Come see 10 varieties of asparagus! The trial includes new releases, purple, frost avoidant, and expanded disease-resistant varieties. Compare the performance of asparagus planted from home-raised seedlings vs crowns. Participate in a weed control discussion and pick the brains of growers and industry reps!

View Asparagus Variety Trial Open House Details

Indoor Mushroom Cultivation, Post-Harvest Handling, and Food Safety

June 6, 2024
Buffalo, NY

This workshop is intended for mushroom producers and those considering mushroom production. Hosted by CCE Wyoming County, the workshop includes a tour and discussion of Flat #12 Mushrooms production process, from substrate to sales, including their food safety plan creation, implementation, and the audit process. Alternative production methods will also be discussed.

View Indoor Mushroom Cultivation, Post-Harvest Handling, and Food Safety Details

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