Skip to main content

White Pine Weevil Response to Oak Overstory Girdling--Results from a 16-Year-Old Study

Buy Article:

$21.50 plus tax (Refund Policy)

A white pine release study initiated in 1973 on the Black River State Forest in central Wisconsin was evaluated in 1990. The study compared growth response and number and frequency of white pine weevil attacks of understory white pine under different canopy removal treatments. In addition, annual measurements of leader diameter and length growth for each treatment are reported for the period 1974-1979. The treatments were girdling of overstory hardwoods, predominantly oak, to produce 0, 30, 50, and 70 ft² of basal area/ac (BA) overstory and an ungirdled control of approximately 100-120 ft² BA. In 1990, white pine in the 0 and 30 ft² BA treatment blocks were taller and were larger in dbh than the other treatments. However, there were significantly more trees attacked by white pine weevils in the 0 and 30 ft² BA treatments (P = 0.05). In both treatments, within 4 years of over-story removal or partial removal, mean leader diameter was sufficiently large to support weevil larvae. The 50 ft² BA treatment was intermediate in growth and number of trees attacked by weevils. In 1990, the 50 ft² BA treatment had the greatest number of unattacked dominant, codominant, and intermediate white pine per acre. Maintaining 30-50 ft² BA appeared to be an appropriate compromise between increased growth while mitigating weevil damage. North. J. Appl. For. 9(2):51-54.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Journal Article

Affiliations: Wisconsin DNR, Rt. 4, Box 18, Black River Falls, WI 54615

Publication date: 1992-06-01

More about this publication?
  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.
  • Membership Information
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more