Eastern New York Commercial Horticulture Enrollment

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  • Cultural Practices

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Early Season Garlic Fertility

Crystal Stewart-Courtens, Extension Vegetable Specialist
Eastern New York Commercial Horticulture

April 26, 2018

The most important time to make nitrogen available to a garlic plant in order to increase yield is shortly after leaf emergence from the ground. Success in providing optimal nitrogen will depend on the nitrogen source you are using and some well-timed assistance from soil biology.

Remember that the nitrogen cycle is driven by biology, and biology is driven by temperature (and soil health!). Organic matter is decomposed partially into ammonium by a suite of microbes before nitrification (see Figure 1 for a handy visual).  As the soil warms, N that is bound in organic matter (slow release N) will be made available, and ammonium nitrogen will turn to nitrate nitrogen (Figure 2), which is easily taken up by plants. 

Bare ground garlic growers can apply their nitrogen in the spring using a variety of sources including very soluble nitrate-nitrogen forms, because the plant will take up the fertilizer readily now. Our latest research is showing that garlic needs no more than 50 lbs/A of N applied in a spring sidedressing.

Nitrogen applied later in the growing cycle of garlic has very little if any effect on the final bulb size. So if you haven't applied your N yet, now is the time! 

Figure 1: Nitrogen cycling, including organic and inorganic forms. 

Figure 2: relationship of nitrification to soil temperature. As temperatures climb, nitrifying bacteria more quickly convert ammonia forms of N to nitrate forms, which are more plant available but also more prone to leaching. 

This article is from the April 26, 2018 edition of ENYCHP Vegetable News.  To read the full newsletter,CLICK HERE.

Figure 1

Figure 1

 








Figure 2





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Upcoming Events

Berry Production Twilight Meeting

Event Offers DEC Credits

July 8, 2021
Peru, NY

Rulf's Orchard, 531 Bear Swamp Road, Peru, NY 

Many berry topics will be discussed including growing Juneberries (Amelanchier, not strawberries), using entomopathogenic nematodes to control strawberry root pests, low tunnel production in June bearing strawberries, SWD monitoring and management. 2.5 DEC pesticide recertification credits available in categories 1A, 10, 22, and 23. Contact Elisabeth Hodgdon (eh528@cornell.edu or 518-650-5323) or Laura McDermott (lgm4@cornell.edu or 518-746-2562) with questions.

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Announcements

U-Pick Farm Practices During Covid-19 Pandemic

U-Pick is a critical direct marketing approach for many of our farms and provides
customers with a unique connection to fresh produce grown close to home. In light
of what we understand about the spread of COVID-19, new management practices
will be needed to protect your farm team and your customers. This document
provides recommended practices and communication strategies for U-Pick
operations for the 2020 season.

https://rvpadmin.cce.cornell.edu/uploads/doc_864.pdf

Growers-are you running low on fall pumpkins, etc?

The Produce Auctions located around the state may have what you need.  Check out all of the opportunities here: https://harvestny.cce.cornell.edu/submission.php?id=4

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

“Understanding Fungicide Resistance and How to Avoid It” with Dr. Margaret McGrath

June 16, 2021
ENYCHP Veg News Farm and Field Updates with Teresa Rusinek
“Understanding Fungicide Resistance and How to Avoid It” with Dr. Margaret McGrath of Cornell University
In this this podcast ENYCHP vegetable specialist Teresa Rusinek interviews Dr. Margaret McGrath, of Cornell University School of Integrative Plant Science, to discuss the development of fungicide resistance in plant pathogens and steps growers can take to avoid it.
Resources:
https://www.vegetables.cornell.edu/pest-management/disease-factsheets/general-guidelines-for-managing-fungicide-resistance/
Vegetable Pathology – Long Island Horticultural Research & Extension Center (cornell.edu)
The Cucurbit Downy Mildew Forecast Homepage
https://cdm.ipmpipe.org/

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