Growth Response of a Boreal Black Spruce Stand to Fertilizer Treatments

1 December 1986

journal article
Published by Oxford University Press (OUP) in Northern Journal of Applied Forestry

Vol. 3 (4) , 142-144
https://doi.org/10.1093/njaf/3.4.142

Abstract

Results are reported for a fertilizer field trial with nitrogen (N), phosphorus (P), and potassium (K) fertilizers in a 100-yr-old black spruce stand in the Lake Nipigon region of northern Ontario. A comparison of four levels of N (0, 112, 224, and 336 kg/ha) revealed significant effects (p = .05) of treatment on diameter growth. In a comparison of N (112 and 224 kg/ha) in combination with K and PK (74 and 93 kg/ha, respectively) the volume growth of fertilized trees, at the end of 5 and 10 years, was generally greater than that of controls, but not significantly greater (p = .05). The best 10- year growth response was to 224 kg N/ha, which produced 7.4 m3/ha of extra wood over controls. No additional growth was realized when K and PK were added with N. North. J. Appl. For. 3:142-144, Dec. 1986.

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