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Nitrogen Accumulation by Conifer Seedlings and Competitor Species From ¹⁵Nitrogen-labeled Controlled-Release Fertilizer

^a Western Ag Innovations, 3-411 Downey Road, Saskatoon, SK, Canada S7N 4L8
^b Dep. of Soil Science, 51 Campus Drive, Univ. of Saskatchewan, Saskatoon, SK, Canada S7N 5A8

View larger version (32K): [in a new window]   Fig. 1. Vector nomograms of relative differences in N concentration, N content, and conifer seedling biomass for vegetation management treatment plot seedlings after the (a) first and (b) second growing season. Biomass and N status of seedlings grown in control plots (i.e., no vegetation management) served as the reference and was normalized to 100. Only vectors associated with the site showing the strongest positive response (i.e., Alcott white spruce) to vegetation management are shown.