Eastern New York Commercial Horticulture Enrollment

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Allium Leafminer Spring Flight Has Begun

Ethan Grundberg, Vegetable Specialist
Eastern New York Commercial Horticulture

May 3, 2018

alm

On Friday, April 27th, Teresa Rusinek confirmed the first signs of adult allium leafminer (ALM) activity on garlic in Ulster County. We anticipate adults will continue to mate and lay eggs on allium crops through the month of May. As the larvae feed on tissue inside of the leaf, they can cause considerable damage to crops like scallions and chives that are marketed with green tops. The physical damage caused by adult oviposition and larval feeding also opens wounds in the leaf tissue that can serve as entry points for other pathogens that cause botrytis leaf blight and soft rot.

 We are conducting insecticide efficacy trials this year in conjunction with Cornell entomologist Dr. Brian Nault to better understand which active ingredients are most effective at reducing damage from ALM and also how many applications are necessary for acceptable ALM control. There are a number of insecticides labeled for leafminer control on bulb vegetables: the insect growth regulator cyromazine (Trigard), spinosyns (Radiant, Entrust (OMRI)), and several pyrethroids (Mustang Maxx, Warrior). Note that abamectin products (Agri-Mek), neonicotinoids (Assail, Admire Pro), and cyantraniliprole formulations (Exirel) are labeled ONLY for Liriomyza leafminers and/or thrips, but may be effective at managing ALM. Since allium species have a waxy leaf cuticle, it is highly recommended that insecticides be mixed with a compatible penetrating adjuvant (LI 700, M-Pede (OMRI), etc.) As always, follow the labeled directions for use for any pesticide.

This article is from the May 3, 2018 edition of ENYCHP Vegetable News.  To read the full newsletter,CLICK HERE.




more crops
Apples

Apples

Apricots

Apricots

Asparagus

Asparagus

Beets

Beets

Blueberries

Blueberries

Broccoli

Broccoli

Brussels Sprouts

Brussels Sprouts

Cabbage

Cabbage

Carrots

Carrots

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

Peaches

Peaches

Pears

Pears

Peas

Peas

Peppers

Peppers

Plums

Plums

Potatoes

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

more crops

Upcoming Events

Ag Manager Webinar Series: Ag Tax Topics - Sales Tax and Property Tax Issues for Ag in NYS

August 27, 2019
12:30 - 12:50pm

Join Liz Higgins from the CCE ENYCHP every other Tuesday at 12:30pm throughout the summer as she discusses pertinent business topics for busy farm managers.
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Willsboro Farm High Tunnel Twilight Meeting

August 27, 2019
5:00pm - 7:00pm
Willsboro, NY

Join vegetable specialists Elisabeth Hodgdon, Jud Reid, and farm manager Mike Davis for a high tunnel and field tour at Cornell's Willsboro Research Farm, where they will share research results for the following projects: 
  • Striped cucumber beetle management suing netting and row cover
  • Varietal differences in cucumber susceptibility to striped cucumber beetle
  • Ground cherry and goldenberry production in field and high tunnel environments
  • Overwintered high tunnel spinach nitrogen fertility 

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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

Biweekly Vegetable News Podcast - Episode 9 - 08/21/19

August 21, 2019
The August 21st, 2019 edition of the Eastern New York Vegetable News covers the following topics:

Changes to Worker Housing Regulations in the Farmworker Fair Labor Practices Act (1:25)
Managing Alternaria Leaf Spot and Head Rot on Broccoli (4:25)
Gauging Winter Squash Maturity for Harvest (10:05)
Insects in Hemp, especially European Corn Borers (18:33)
Guidance on the Dropped Covered Produce Provision of the Food Safety Modernization Act (22:53)
Cucurbit Downy Mildew Management Update (27:02)
Report from the BioControl Field Day and Weed Management Recommendations (31:07)
Day Neutral Strawberries (40:33)

Here are links to additional resources mentioned in the episode:

Current Housing Regulations for Seasonal and Migrant Farmworkers
(On January 1, 2020, these will now apply to farms housing any number of seasonal and migrant farmworkers)

Public Health Law, section 225, NYCRR Title 10 Health, Part 15, Migrant Housing: https://www.health.ny.gov/regulations/nycrr/title_10/part_15/

Managing Alternaria Leaf Spot and Head Rot in Broccoli

Sue Scheufele “Can Alternaria Leaf Spot Be Managed Organically?” http://www.hort.cornell.edu/expo/proceedings/2013/Cole%20Crops/Cole%20Crops%20Scheufele%20Alternaria.pdf

Christy Hoepting “Control of Alternaria head rot in broccoli featuring exciting results from 2018 on‐farm fungicide trial” http://www.hort.cornell.edu/expo/pdf/20190115-all-day-hoepting.pdf

Dropped Covered Produce:
FDA Factsheet on Dropped Covered Produce: https://www.fda.gov/media/129568/download

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