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sap rise in spring

SCHMID at Butler.EDU SCHMID at Butler.EDU
Mon Sep 30 10:15:19 EST 1996

What's the current theory on the rise of sap in trees before they
leaf out and initiate tension/cohesion/adhesion?  Is "root pressure" 
resulting from release of sugar by stored starch considered enough 
to account for it? I've also heard theories about pressure from
carbon dioxide.  This question is about due to pop up in class 

Kathy Schmid
schmid at butler.edu

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