YELLOW PINJ' REPRODUCTION G27 



As I see it. the formula for securing yellow pine reproduction can 

 be expressed in ten words: Chase the sheep; graze cattle; leave seed 

 trees ; burn brush. 



SEEDLING STUDIES 



Plots taken across a series of east-running ridges and draws. Alti- 

 tude, r,80(). Pnrc stand of yellow pine. Cutting in 1916. 



Plot No. I 



Exposure : Gentle N.E. slope in open draw. 



Timber : Open stand mature trees. Some park land. 



Cutting : None. 



Soil quality : Excellent. Deep alluvial. 



Soil moisture: Excellent. 



Ground cover : Scanty grama. No sod. Pingue and weeds. 



Seed trees : Large, mature and intermediate in groups. 



Brush disposal : No brush. 



Grazing, C&H : Overgrazed. 



Grazing, S&G : Formerly much overgrazed. Lambing ground. 



Reproduction: 8-15 years plentiful on lee side (east) of trees. Seed 

 cast 90 feet from trees. A very few seedlings about 5 years old. 

 Practically all of the seedlings have been badly damaged by sheep. 

 Some cropped by cattle. Many young trees putting up a second or 

 even a third leader. Many dead stubs. None coming in over parks. 

 Some damage by horning of cattle. 



Conclusions: Trees have seeded heavily as far as they could reach. 

 Good soil and moisture enabled some seedlings to survive. All would 

 have been destroyed on poorer site. Plot has been badly overgrazed 

 by sheep: is still overgrazed by cattle, especially in winter. Seed 

 trees have seeded according to prevailing winds. Land in good shape 

 for reproduction if stock were excluded. 



Plot No. 2 



Exi>o>ure: E. 12 per cent slope. 

 Timber : Mature and intermediate. 

 Cutting: Light. 



Soil quality: Good. Alluvial. Some stones. 

 Soil moisture: Fair. 



Ground cover : Pine grass and various bunch grasses very abundant 

 where protected by tops and heavy brush. 

 Seed trees : Intermediate. Plentiful. 

 Brush disposal: Pulled or piled (both methods used). 

 Grazing. C&H : Fully grazed except for brush protected areas. 

 Grazing. S&G: Too heavy in former years. None recently. 



