40 



30- 



c 



O 



q3 20 



10 - 



-H 

 



Seed spacing 

 Oyjord seeder 



T- 



20 30 40 50 60 70 80 

 Distance between seeds (mm) 



90 



100+ 



Seedling spacing 

 Oyjord seeder 



40 n 



30 



c 



0) 



o 



q5 20 



CL 



10 



10 20 30 40 50 60 70 80 90 100+ 

 Distance between seedlings (mm) 



40 n 



30 



c 



0) 



o 



0) 20 



CL 



10 



Seed spacing 

 Summit Precision seeder 



10 



^ I ■ I r— 



20 30 40 50 60 70 80 



Distance between seeds (mm) 



"go" 



100+ 



40 n 



30 



c 



0) 



o 



05 20 



Seedling spacing 

 Summit Precision seeder 



10 



10 20 30 40 50 60 70 80 90 100+ 

 Distance between seedlings (mm) 



Figure 1c — Spacing distribution 

 histograms for western larch seeds and 

 seedlings from 95 percent germination 

 seedlots at the Coeur d'Alene Nursery. 



40-1 



Seedling spacing 

 Hand thinned 



10 20 30 40 50 60 70 80 90 100+ 

 Distance between seedlings (mm) 



10 



