A bioassay of the availability of residual 15N fertilizer eight years after application to a forest soil in interior British Columbia

Abstract

Although a high proportion of fertilizer N may be immobilized in organic forms in the soil, no studies have examined the long-term availability of residual fertilizer 15N in forestry situations. We investigated this by growing lodgepole pine (Pinus contorta) seedlings in surface (0–10 cm) soil sample eight years after application of 15N-urea, 15NH4NO3 and… (More)
DOI: 10.1007/BF00010154

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