Marcus Williamson writes

"Workers who followed traditional methods cut the mesquite tree posts,
center beams, and the rest of the wood used for making the jacales
during a full moon. They believed any part of the tree cut during the
new crescent-shaped moon retained the sap and so attracted insects,
which left a powdery mess that rotted the wood. Houses made of such
wood would not last long."
http://www.texancultures.utsa.edu/ra...chapter011.htm

"Napoleon I. directed that the felling of naval timber should take
place only from November 1 to March 15, and during the decrease of the
moon, on account of the rapid decay of timber, through the
fermentation of its sap, if cut at other seasons."
http://72.1911encyclopedia.org/D/DR/DRY_ROT.htm

Hope this helps.

It suggests that it's not current practice.

Probably due to it being myth, although the cutting timber when the sap
is down (winter) is reasonable.

--
Oz
This post is worth absolutely nothing and is probably fallacious.
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