Skip to main content

Height Development of Betula and Salix Species Following Precommercial Thinning at Various Stump Heights: 3-Year Results

Buy Article:

$60.90 plus tax (Refund Policy)


Topping, to reduce competition, may be an attractive alternative to traditional precommercial thinning in forestry for both biological and financial reasons. In this study, the height development of secondary and main stems of birch (Betula pubescens Ehrh. and Betula pendula Roth, species not separated), and secondary stems of willow (Salix spp.) was examined in a field experiment in northern Sweden. Treatments studied were: traditional precommercial thinning, topping at 40% of main stem mean height, topping at 70% of main stem mean height, and controls (untreated). Post-treatment damage to the trees was frequent for both genera, but especially for the willows. Treatment rankings for all of the secondary stems, and for undamaged secondary stems, according to height development after three growing seasons, were topping at 70% ≥ no treatment ≥ topping at 40% ≥ traditional precommercial thinning. The results also indicated that the cross-cutting level could be raised to a level of at least 40% of main stem height, without risking the main stems becoming overtopped. During the study period, 67% of the main stems exchanged their leading shoots at least once.

Document Type: Research Article


Publication date: November 14, 2000

More about this publication?

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
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