Eastern white pine and Scotch pine stumps with living branches were unattractive to pales weevil for breeding. When feasible, leaving a few lower branches on Christmas tree stumps during harvest should prevent weevil buildup.
Corneil, Jeffrey A. and Wilson, Louis F.
"Live Branches on Pine Stumps Deter Pales Weevil Breeding in Michigan (Coleoptera: Curculionidae),"
The Great Lakes Entomologist: Vol. 17
, Article 9.
Available at: http://scholar.valpo.edu/tgle/vol17/iss4/9