BINGHAM, R.T. andG.E. REHFELDT 



1970. Cone and seed yields in young western white pines. USDA 

 Forest Serv. Res. Pap. INT-79, 12 p. 



Eighteen years of cone and seed yields from 179 30- to 50-year-old 

 western white pines (Pinns montioola Dougl. ) representative of 13 

 geographic localities were compared. Each tree averaged 28 cones 

 per tree, and each cone contained about 104 filled seeds. However, 

 not only was annual cone production highly variable, but geographic 

 localities and individual trees varied greatly in productivity within a 

 given year. Recognition of these components of variation in cone 

 production for western white pine can lead to maximal efficiency in 

 cone collection. 



BINGHAM, R.T. andG.E. REHFELDT 



1970. Cone and seed yields in young western white pines. USDA 

 Forest Serv. Res. Pap. INT-79, 12 p. 



Eighteen years of cone and seed yields from 179 30- to 50-year-old 

 western white pines (Pinus montioola Dougl.) representative of 13 

 geographic localities were compared. Each tree averaged 28 cones 

 per tree, and each cone contained about 104 filled seeds. However, 

 not only was annual cone production highly variable, but geographic 

 localities and individual trees varied greatly in productivity within a 

 given year. Recognition of these components of variation in cone 

 production for western white pine can lead to maximal efficiency in 

 cone collection. 



