FIFTH NATIONAL CONSERVATION CONGRESS 

 Part 2. 



77 



Part 3. 



Results on a Million Acre Forest under above Conditions. 

 Rotation 100 years. Annually cut and reforest 10,000' acres. 



In the planting work conducted by the Forest Service it has been found that 

 it is not profitable to plant trees less than 3 years old, one year transplanted. The 

 trees are closely spaced. The planting is done either in holes or by the "slit" 

 method. After planting the trees receive no further care until thinning is re- 

 quired, except that sheep and other grazing animals are excluded from the areas 

 and fires kept out. The cost of planting varies from $7 to $12 per acre for the 

 large projects; on smaller ones it may be much greater. 



In some sections excellent results have followed direct seeding, but success 

 by this method is very variable. In the Rocky Mountain region wherever there 

 are seed trees present, natural regeneration is cheaper than artificial regenera- 

 tion. The only exception to this rule is in the lower forest zone where precipita- 

 tion is very light, and it is extremely difficult to get adequate reproduction. This 

 applies especially to the yellow pine type in the southern Rocky Mountains 



THE PACIFIC COAST REGION 



Douglas Fir Type 



PRACTICALLY all of the territory west of the Ca.scade Mountains in 

 Oregon and Washington — the Coast Range, the bottom lands, the foot- 

 hills, and lower western slopes of the Cascade Mountains — belongs to 

 this type. It was originally, and much of it is still, covered with a solid and very 

 dense forest consisting largely of Douglas fir. With it in greater or less 



