Crown release improves growth of 20-year-old Betula alleghaniensis in tolerant northern hardwood stands

@article{Wood2004CrownRI,
  title={Crown release improves growth of 20-year-old Betula alleghaniensis in tolerant northern hardwood stands},
  author={James E. Wood and Friedrich W. Von Althen and E. Garth Mitchell},
  journal={New Forests},
  year={2004},
  volume={12},
  pages={87-99}
}
Twenty-year-old overstocked naturally regenerated yellow birch (Betula alleghaniensis Britton) were thinned near Thessalon, Ontario. Treatments consisted of either a control, or the removal of all competing trees at 1, 2, 3, or 4 m around the boles of the crop trees. The size of the openings created around the crop tree crowns was found to be more strongly correlated to diameter, clear bole length, and crown increment than the removal of competing trees using fixed distance from the stem. Crop… CONTINUE READING