REFERENCES 



Daubenmire, R.; Daubenmire, Jean B. Forest vegetation 

 of eastern Washington and northern Idaho. Technical 

 Bulletin 60. Pullman, WA: Washington Agricultural 

 Experiment Station; 1968. 104 p. 



Gessel S. P.; Stoate. T. N.; Turnbull, K. J. The growth 

 behavior of Douglas-fir with nitrogenous fertilizer in 

 western Washington. Research Bulletin 1. Seattle. 

 WA: University of Washington, College of Forest 

 Resources; 1965. 203 p. 



Graham, Russell T.; Tonn, Jonalea R. Response of grand 

 fir, western hemlock, western white pine, western 

 larch, and Douglas-fir to nitrogen fertilizer in northern 

 Idaho. Research Note INT-270. Ogden, UT: U.S. 

 Department of Agriculture. Forest Service, Intermoun- 

 tain Forest and Range Experiment Station; 1979. 8 p. 



Heilman, Paul. Effects of fertilization on Douglas-fir in 

 southwestern Washington. Circular 535. Puyallup, 

 WA: Washington Agricultural Experiment Station; 

 1971. 23 p. 



Loewenstein, H.; Pitkin, F. H. Response of grand fir and 

 western white pine to fertilizer applications. Northwest 

 Science. 37(1); 23-30; 1963. 



Miller, Richard E.; Fight, Roger D. FertiUzing Douglas- 

 fir forests. General Technical Report PNW-83. Port- 

 land, OR: U.S. Department of Agriculture, Forest 

 Service, Pacific Northwest Forest and Range Experi- 

 ment Station; 1979. 29 p. 



Miller, Richard E.; Reukema, Donald L. Seventy-five- 

 year-old Douglas-fir on high-quality site respond to 

 nitrogen fertilizer. Research Note PNW-237. Portland, 

 OR; U.S. Department of Agriculture, Forest Service, 

 Pacific Northwest Forest and Range Experiment Sta- 

 tion; 1974. 8 p. 



Ryker, Russell A.; Pfister, Robert D. Thinning and fer- 

 tihzing increase growth in a western white pine seed 

 production area. Research Note INT-56. Ogden, UT: 

 U.S. Department of Agriculture, Forest Service, Inter- 

 mountain Forest and Range Experiment Station; 1967. 

 3 p. 



SAS Institute Inc. SAS user's guide: statistics, 1982 ed. 

 Gary, NC: SAS Institute Inc.; 1982. 584 p. 



Scanlin, David C; Loewenstein, Howard; Pitkin, 

 Franklin H. Two-year response of north Idaho stands 

 of Douglas-fir and grand fir to urea fertilizer and 

 thinning. Bulletin No. 18. Moscow, ID: University of 

 Idaho, Forest, Wndhfe and Range Experiment Station; 

 1976. 17 p. 



Webster, S. R.; DeBell, D. S.; Wiley, K. N.; Atkinson, 

 W. A. FertiUzation of western hemlock. Atkinson, 

 W. A.; Zasoski, R. J., eds. Proceedings of western 

 hemlock management conference; 1976 May; Seattle, 

 WA. Seattle, WA: University of Washington, College 

 of Forest Resources; 1976: 247-252. 



Graham, Russell T.; Tonn, Jonalea R. Ten-year results of fertilizing grand fir, 

 western hemlock, western larch, and Douglas-fir with nitrogen in northern 

 Idaho. Research Paper INT-346. Ogden, UT: U.S. Department of Agriculture, 

 Forest Service, Intermountain Research Station; 1985. 6 P- 



Ten-year results show initial short-lived increase in growth at two locations 

 where nitrogen fertilizer in the form of urea was applied to young stands of 

 mixed conifers in northern Idaho. In the second 5 years after treatment there 

 were no further significant (p < 0.05) increases between the fertilized and unfer- 

 tilized trees in either diameter or height growth. Grand fir {Abies grandis) 

 responded better in the first 5 years than any other species, while western white 

 pine (Pinus monticola) and western larch {Larix occidentalis) showed no evi- 

 dence of response during the 10-year study. 



KEYWORDS: fertilization, western white pine, grand fir. western larch. Douglas- 

 fir, diameter growth, height growth 



* u s. GOVERNMENT PRINTING OFFICE: 1985—576-040/20,004 REGION NO. 8 



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