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Spraying with freezing temps forecast at night

Posted by Peter Drevniok 
Spraying with freezing temps forecast at night
May 05, 2020 04:41PM

Its been a rare night without freezing temps here during the last 3 weeks (ie during the period trees are breaking dormancy).
The next 5 days have forecasts (celsius) of -5, +2 (rain/snow showers),
-3, -10, -5 . I managed to get one holistic spray in so far. Most trees are green tip or beyond with some fast approaching tight cluster.
Does it matter if I spray during the day (which now average around +12 to +15) with freezing temps during the night?

Peter Drevniok
Maxwell Mountain Orchards
zone 4b
Re: Spraying with freezing temps forecast at night
May 05, 2020 05:36PM
My answer is no, it is not a bad thing to spray during the day (with above freezing temps) or if the night time temps will be <0C. In fact, depending on what you are spraying, and how it really gets, the additional sprays could i) increase the brix levels of cell cytoplasm and lower freezing point and/ or ii) reduce ice nucleation on the surface of the plant. You will not cause the plant to freeze because of your spray (unless you spray liquid N - haha). Others may have a different point of few, but that's my 2 cents.

Mike Biltonen, Know Your Roots
Zone 5b in New York
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