Ministry of Forests Forest Science Program
		Abstract for FRDA Report 269

		Fertilization and Thinning Effects on a Douglas-Fir Ecosystem at Shawnigan Lake: 24-Year Growth Response
		Authors or Ministry Contacts: Eleanor R.G. McWilliams and Guillaume Therien
		Branch: Research
		Subject: Fertilization
		Series: FRDA Report
		Other details: Published November 1996

Abstract

This report documents the 24-year growth response of a Douglas-fir (Pseudotsuga menziesii (Mirb) Franco) stand to thinning and urea fertilization. The stand is on a poor site (site index 25 m) and was 24 years old at the time of the initial treatments in 1971, with an average density of 3947 stems per hectare. The average tree was 7.6 cm in diameter and 8.6 m in height. Growth responses were analyzed on a per-hectare, individual tree, crop-tree, and tree-size class basis.

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