C-55 Thinning and fertilization in western redcedar (C55 WRC TF)

C55 is a study of thinning and fertilization implemented in a naturally regenerated, high density stand of primarily western redcedar on a low-site quality area on the Olympic Peninsula in western Washington. The fertilization treatments compared effectiveness of urea and ammonium nitrate (2 nitrogen fertilizers) as well as fertilization treatments which included phosphorus, calcium, potassium and sulfur. This data publication contains the response variables, measured between 1980 and 2005, such as tree height and diameter growth, basal area, regeneration, foliar nutrients, stem taper, crown width, branch diameter and regeneration.
Western redcedar is an ecologically important and commercially valuable species but relatively little information has been available on its growth rates in young stands or responses to management.
These data were published on 09/03/2021. On 08/04/2023 metadata updates included a correction to the bounding coordinates and description of geographic extent as well as a few additional minor updates to references.