Root Length in Young Hybrid Populus Plantations: Its Implication for Border Width of Research Plots

$29.50 plus tax (Refund Policy)

Buy Article:

Abstract:

Root length may be important in determining research plot border width. Measurements of hand excavated hybrid Populus roots showed root length increased with tree age up to at least 3 years. Maximum root length ranged from 2.2 m for 1-year-old trees to 5.2 m for 3-year-old trees. It appears that in some studies, e.g., irrigation and fertilization treatments, border width may be considerable and probably increases with tree age. Border width sufficient to avoid edge effects from a plot that had an irrigation and fertilization treatment applied to it was at least 2-3 m. Total tree height decreased significantly toward the plot edge across a 6 m wide untreated border zone. Published data from spacing and yield studies shows tree biomass increases toward the edge of plots, probably as a response to light. This study showed that height and diameter decreased toward the plot edge when an irrigation and fertilization treatment was applied to the plot. These contrasting results in edge effect are discussed in terms of canopy vs. root competition. Some possible effects of different experimental treatments on the necessary plot border width are explored. Forest Sci. 27:808-814.

Keywords: Research plot size; experimental design; isolation strips; plot border effects

Document Type: Journal Article

Affiliations: Principal Hydrologist, USDA Forest Service, North Central Forest Experiment Station, Forestry Sciences Laboratory, P.O. Box 898, Rhinelander, WI 54501

Publication date: December 1, 1981

More about this publication?
  • Membership Information
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect 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