Eastern New York Commercial Horticulture Enrollment

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  • Cultural Practices

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Lookout for Leek Moth

Amy Ivy, Vegetable Specialist
Eastern New York Commercial Horticulture

May 17, 2018

early leek mothEarly leek moth damage to garlic. Unfold the youngest
 leaves near the emerging scape to find the damage
and young caterpillars
map

Leek moth is a pest of all allium crops: onions, garlic, leeks, shallots and chives. It is widespread through the southern parts of Ontario and Quebec in Canada, northern NY and in recent years, most of Vermont (see map).

Leek moth overwinters as an adult and begins flying in mid-April. This year the first adults were caught in Essex on April 21, in spite of very cold weather the week prior. The adults seek out alliums on which to lay eggs; emerging garlic and onion seedlings are known to be popular sites. Overwintering onions and emerging chives could be likely hosts for these first egg laying efforts as well. Larvae should be hatching in a couple of weeks.

Be cautious when buying and selling onion transplants between growers in the infested areas. We have seen leek moth appear in new locations when infested plants were brought in from other farms. It is not known in the southern US so seedlings from there should not be a concern for leek moth but caution is advised when buying any northern grown seedlings.

Leek moth larvae can do considerable damage to garlic scapes and this is a good first place to look for them when scouting. Look inside folded leaves near the developing scapes as well. There are 2ee labels for Entrust (organic), Radiant, Lannate and Warrior II w/Zeon. Controlling this first emergence of larvae can help protect onions from the second generation of leek moth which is more difficult to control since the larvae are more protected because they feed inside the hollow onion leaves. 

leek2Damage to garlic scape as it emerges



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Cauliflower

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Dry Beans

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Eggplant

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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

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Pears

Peas

Peas

Peppers

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Plums

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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

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Sweet Corn

Sweet Corn

Sweet Potatoes

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2022 Spotted Wing Drosophila Monitoring/Management

All berry farmers are watching for monitoring reports that indicate Spotted Wing Drosophila (SWD) adults are in their region. Mid-season berry crops should be sprayed as soon as berries begin to ripen unless you've elected to use insect exclusion netting.

- For general information about SWD, and to enroll for free monitoring reports, visit the Cornell SWD blog https://blogs.cornell.edu/swd1/.
- Click here for the 2022 Quick Guide for Pesticide Management.
- For some great instructional videos and fact sheets on insect exclusion netting, visit the University of Vermont's Ag Engineering blog.


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

Winter Greens Grower Interviews in Northern New York

October 22, 2022
In this episode, vegetable specialist Elisabeth Hodgdon interviews Lindsey Pashow, ag business development and marketing specialist with the Cornell Cooperative Extension Harvest New York team. They discuss findings from a series of interviews with winter greens producers in northern New York. Lindsey shares production and marketing challenges associated with growing winter greens in this cold and rural part of the state, success stories and advice from growers, and tips for those interested in adding new crop enterprises to their operation.

Funding for this project was provided by the Northern New York Agricultural Development Program. The episode was edited by Miles Todaro of the ENYCHP team.

Resources:
• Crop enterprise budget resources available from Penn State Extension (field and tunnel vegetables: https://extension.psu.edu/small-scale-field-grown-and-season-extension-budgets), UMass Extension (winter spinach budgets: https://ag.umass.edu/vegetable/outreach-project/improving-production-yield-of-winter-greens-in-northeast and field vegetables: https://ag.umass.edu/vegetable/fact-sheets/crop-production-budgets), and Cornell Cooperative Extension (high tunnel vegetables: https://blogs.cornell.edu/hightunnels/economics/sample-budgets-spreadsheets/). Use these budgets as templates when developing your own crop enterprise budget.
• The Organic Farmer’s Business Handbook, by Richard Wiswall
• The Winter Harvest Handbook, by Eliot Coleman

For questions about the winter greens project discussed in this podcast, reach out to Lindsey Pashow (lep67@cornell.edu) or Elisabeth Hodgdon(eh528@cornell.edu).

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