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Fertilization of Eastern White Pine (Pinus Strobus L.) in Maine Shows Economic Potential

Robert K. ShepardMaine Agricultural Experiment Station

出版	Maine Agricultural Experiment Station, 1987
URL	http://books.google.com.hk/books?id=Q8ssAQAAMAAJ&hl=&source=gbs_api

註釋

Plots in seven eastern white pine sawlog stands were treated with nitrogen at rates of 0, 56, 112, and 224 kg/ha. After four years the largest increase in basal area growth, 0.31 dm2/tree, and volume growth, 13.0 m3/ha, occurred in plots that received 112 kg/ha. It appears that an application rate of 112 kg/ha may provide a real return of 15% or more in some stands.