25 n 



Douglas-fir 

 CDA 



25 n 



Seed density 

 Seedling density 

 Shippable seedlings 



95 75-85 

 Summit 



95 75-85 

 Oyjord 



95 75-85 

 Hand thinned 



Douglas-fir 

 JHS 



fs?l Seed density 

 I I Seedling density 

 Stiippable seedlings 



95 75-85 



Summit 



95 75-85 



Oyjord 



95 75-85 

 Hand thinned 



O) 



0) O 

 w ^ 



O O 



20- 



15 



10 



=5 o 



0) O 

 CO ^ 



CO 



25 



20- 



15- 



10- 



Ponderosa pine 

 JHS 



Seed density 

 Seedling density 

 Shippable seedlings 



95 75-85 

 Summit 



95 75-85 

 Oyjord 



Lodgepole pine 

 LPN 



95 75-85 



Hand thinned 



Seed density 

 Seedling density 

 Stiippable seedlings 



95 75-85 

 Summit 



95 75-85 

 Oyjord 



95 75-85 

 Hand thinned 



Engelmann 

 spruce 

 LPN 



95 75-85 

 Summit 



95 75-85 

 Oyjord 



Seed density 

 Seedling density 

 Shiippable seedlings 



95 75-85 

 Hand thinned 



25 



V) 

 O) 



=5 2 



CD O 

 W „ 

 >- O 

 O O 



w 



T3 (D 

 %^ 

 CO 



20- 



15- 



10- 



Western 

 larch 

 CDA 



Seed density 

 Seedling density 

 Shippable seedlings 



95 75-85 



Summit 



95 75-85 



Oyjord 



95 75-85 



Hand thinned 



Engelmann spruce 

 CDA 



Seed density 

 Seedling density 

 Shippable seedlings 



95 75-85 

 Summit 



95 75-85 

 Oyjord 



95 75-85 

 Hand thinned 



Figure 8 — Comparison of the average seed 

 density, the average seedling density, and 

 the average shippable seedlings from seven 

 tests at Coeur d'Alene Nursery (CDA), J. 

 Herbert Stone Nursery (JHS), and Lucky 

 Peak Nursery (LPN). Each histogram 

 represents one test, including two seed- 

 lots of the same species: a 95 percent 

 germination lot (95) and a 75 to 85 percent 

 germination lot (75-85). Treatments include 

 (1) sowing with the Summit Precision 

 Seeder, (2) sowing with the Oyjord Seeder, 

 and (3) hand thinning to a desired spacing. 



23 



