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INT-RN-392: Representing Growth Response to Fertilization in the Prognosis Model for Stand Development


Stage, Albert R.; Crookston, Nicholas L.; Shafii, Bahman; Moore, James A.; Olson, John. Representing growth response to fertilization in the Prognosis Model for Stand Development. Research Note INT-392. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station; 1990. 6 p.

Capability to represent effects of fertilization has been added to the Prognosis Model for Stand Development. As implemented in version 6, the extension is calibrated only for applications of 200 lb nitrogen applied in the form of urea. Direct and indirect effects are based on growth 10 years after treatment for diameter effects, and 6 years after treatment for height effects. Mortality is not affected in the model. After 10 years, only indirect effects are represented through the normal dynamics of the Prognosis Model. Control of timing is provided through a keyword, the parameters of which are documented in this note.

Keywords: Douglas-fir, grand fir, diameter increment, height increment


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Title: INT-RN-392: Representing Growth Response to Fertilization in the Prognosis Model for Stand Development
Publish Date: March 25, 2005
Last Update:
October 22, 2008

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