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nafex - [NAFEX] Winter Moisture Loss, formerly "Winter Pruning. . . "

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  • From: "Ed Forest" <edforest55@hotmail.com>
  • To: nafex@lists.ibiblio.org
  • Subject: [NAFEX] Winter Moisture Loss, formerly "Winter Pruning. . . "
  • Date: Sun, 16 Feb 2003 15:37:00 +0000

I don't know if this applies to apples as the study was done on pine, but for what its worth, I have read that small pine trees get their moisture in winter mostly via their roots and even extract moisture from unfrozen soil pockets if available.
Larger pine trees get most of their moisture stored in their sapwood.
Still puzzling to me though is how the water is transported through the xylem if its 0 degrees outside. I believe it happens during warm spells.
Most water is unavailable from the soil by the way, in our area from December through March. The hardest time for trees to obtain water in winter is late winter when the sun is warming up the upper tree and the soil is still frozen.
This is another reason that snow cover is great, not only to protect the roots from damage but for water supply.

Kevin Bradley
www.edibleforestnursery.com




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