Skip to main content

Early Growth of Ponderosa Pine Ecotypes in Michigan

Buy Article:

$29.50 plus tax (Refund Policy)


A 57-origin provenance study of Pinus ponderosa includes three test plantations in southern Michigan. Relative growth rate changed from age 2 to 8, primarily because of severe winter injury to California-Oregon trees and slight winter injury to Arizona-New Mexico origins. At all test sites trees from the Pacific Northwest were tallest at age 8. All hardy origins had about 4 branches per whorl. Southern origins produced the most lammas growth. Coastal var. ponderosa and interior var. scopulorum could be separated by bud scale color, bud scale appression, and foliar concentration (highest in var. ponderosa) of N, K, P, Ca, and B. Waxy bloom on young twigs continued to be a diagnostic character of the Arizona-New Mexico ecotype. Most differences among ecotypes could be related to environment at place of origin, but the considerable amount of within-ecotype variation could not be so related.

Keywords: Pinus ponderosa; foliar analysis; micronutrients; provenance studies; winter injury

Document Type: Journal Article

Affiliations: Resident Forester of the Fred Russ Forest, Michigan State University

Publication date: June 1, 1969

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
  • Submit a Paper
  • Membership Information
  • Author Guidelines
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Partial Open Access Content
Partial Open access content
Subscribed Content
Subscribed content
Free Trial 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