USDA Forest Service 

 Research Paper INT-230 

 June 1979 



INFLUENCE OF SOME ENVIRONMENTAL FACTORS 

 ON INITIAL ESTABLISHMENT AND GROWTH 

 OF PONDEROSA PINE SEEDLINGS 



Michael G. Harrington and Kicl^ G. Kelsey 



INTERMOUNTAIN FOREST AND RANGE EXPERIMENT STATION 



Forest Service 

 U.S. Department of Agriculture 

 Ogden, Utah 84401 



