Kurt- Apples will begin freezing at about 28F- if the event is 4 hours or longer significant damage will occur.
Fruit that experienced only a mild (~28°F or above) freeze of short duration (less than 4 hours) may recover and be perfectly salable, but should not be considered candidates for long-term storage. If this is the case, wait until the fruit thaws out the next day before harvesting. Note: Temperatures in the low 20’s and teens will make the fruit unsalable. I have been guiding the growers I work with in NJ, NY and PA to have all fruit harvested by Friday pm if they wish to sell it. See Penn State- https://extension.psu.edu/handling-of-frozen-apples and Extension- https://ask.extension.org/questions/157126 Win Cowgill Professor Emeritus, Rutgers, the State University Visiting Scholar, UMASS-Amherst CEO- Win Enterprises International, LLC Editor Horticultural News PO Box 143 Baptistown, NJ 08803 Office 908-489-1476 Fax- 908-996-6404 Email: wincowg...@mac.com http://phytelligence.com/ www.horticulturalnews.org/ www.wincowgill.com www.virtualorchard.net/ http://giselacherry.com/ http://virtualorchard.net/njfruitfocus/index.html http://www.appletesters.net http://nc140.org Twitter @mrsuncrisp <https://twitter.com/mrsuncrisp> > On Nov 8, 2017, at 3:53 PM, Kurt Alstede <k...@alstedefarms.com> wrote: > > Hello Fellow Growers, > > We are well aware of the quality impact of extreme cold weather on apples in > terms of long term storage, quality, etc. We are facing low temperatures in > Northwest NJ of 17 degrees F on Friday night surrounded by 27 on Thursday > evening and 25 on Saturday evening. Daytime highs on Friday are expected to > be only 34 and on Saturday 41. We would love to be able to maintain some > apples on our trees until Thanksgiving for PYO uses only. Do any of you have > any experience with this? Will the apples maintain a sufficient amount of > quality to be able to be marketed to a rather non discriminating PYO cliental > following the freeze event with the expectation that the apples will be used > quickly for fresh use and not stored? Are these apples suitable for cider? > > I appreciate your insight into this question. > > Best Regards, > > Kurt > > Kurt W. Alstede > Founder, Owner, General Manager, > Alstede Farms, LLC > P.O. Box 278 > 1 Alstede Farms Lane, > Chester, New Jersey 07930 > United States of America > > Tel: 908-879-7189 > Fax: 908-879-7815 > www.alstedefarms.com <http://www.alstedefarms.com/> > > > > > > _______________________________________________ > apple-crop mailing list > firstname.lastname@example.org <mailto:email@example.com> > http://virtualorchard.com/mailman/listinfo/apple-crop > <http://virtualorchard.com/mailman/listinfo/apple-crop>
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