People observing a potassium deficient red pine plot
Title
People observing a potassium deficient red pine plot
Subject
Forest Products Industry
Description
Sven Heiberg's original potassium deficient red pine plot. See Heiberg & Loewenstein, 1958 and Heiberg and White 1951. Pack Forest Warrensburg NY
Creator
Ken Armson
Date
1972-08
Format
JPEG
Type
Photograph
Identifier
Armson-Silviculture-764
Coverage
USA - New York
Original Format
Photo
Files
Collection
Citation
Ken Armson, “People observing a potassium deficient red pine plot,” Archives & Digital Collections at Lakehead University Library, accessed October 23, 2026, https://digitalcollections.lakeheadu.ca/items/show/5620.