Seed spacing 

 Oyjord seeder 



40 n 



30- 



c 

 o 



03 20 

 Q. 



10- 



10 20 30 40 50 60 70 80 90 100+ 

 Distance between seeds (mm) 



Seedling spacing 

 Oyjord seeder 



T — — 1 1 1 ^*-— I T —PT ' 



10 20 30 40 50 60 70 80 90 100+ 

 Distance between seedlings (mm) 



40 



30- 



c 



0) 



o 



0) 20 



Q. 



10 



Seed spacing 

 Summit Precision seeder 



10 20 30 40 50 60 70 80 90 100+ 

 Distance between seeds (mm) 



40 



30 



c 



O 



0) 20 



CL 



Seedling spacing 

 Summit Precision seeder 



10- 



10 20 30 40 50 60 70 80 90 100+ 

 Distance between seedlings (mm) 



Figure 1a — Spacing distribution 

 histograms for Douglas-fir seeds and 

 seedlings from 95 percent germination 

 seedlots at the Coeur d'Alene Nursery. 



Seedling spacing 

 Hand thinned 



LMJP<JL.^LWJ 



•I" ■ I -r — 'T' 



10 20 30 40 50 60 70 80 90 100+ 



Distance between seedlings (mm) 



8 



