30 



BULLETIN 1264, U. S. DEPARTMENT OE AGRICULTURE 



Table 14. — Record of experimental plantations of Engelmann spruce in the inter- 

 mountain region. 



Site. 



Planting record. 



Percentage of survival by years. 



Vigor- 

 ous 



trees. 2 





No; 



Description. 



Age. 



Date. 



1st 

 year. 



2d 

 year. 



3d 

 year. 



4th 



year. 



height 

 growth. 3 



32 

 32 



Ephraim Canyon water- 

 shed, Manti National 

 Forest, Utah: 



Dense aspen 



Do 



2-2 

 3-1 

 2-2 

 3-1 

 2-2 

 3-1 

 2-2 

 3-1 

 2-2 

 3-1 

 3-1 

 3-1 

 3-1 

 2-2 

 3-1 



3-1 

 3-1 



3-0 

 3-1 

 2-2 

 3-1 

 3-1 

 3-2 

 3-1 

 2-1 

 3-1 

 3-1 

 3-1 



June, 1913 

 June, 1917 

 June, 1913 

 June, 1917 

 June, 1913 

 June, 1917 

 June, 1913 

 June, 1917 

 June, 1913 

 June, 1917 



—do 



...do 



—do 



June, 1913 

 June, 1917 



June, 1917 



—do 



—do 



...do 



June, 1919 



.--do 



...do 



May, 1920 

 ...do 



May, 1918 



June, 1917 



...do 



...do 



95 

 84 

 93 

 83 

 84 

 49 

 88 

 50 

 75 

 23 

 76 

 30 

 90 

 84 

 99 



84 

 82 

 99 

 97 

 98 

 76 

 87 

 100 

 83 

 83 

 74 

 54 



82 

 49 

 72 

 67 

 53 

 13 

 43 

 15 

 22 

 5 



79 

 25 

 60 

 61 

 46 



3 74 

 ------ 



""T34" 



Per cent. 

 17 

 13 

 16 

 52 

 4 

 13 



Inches. 

 0.7 



4 



32 

 3? 



Aspen, % -density 



Do 



1.0 



7 



32 

 32 



Aspen, 3^-density 



Do 



1.9 



32 



Aspen, 34 -density 



Do 



31 



6 21 





32 



13 





3? 



Cleared aspen. . . 



16 



71 





B2 



Do 



5 





52 



Heaw aspen. . 









a?, 



Light aspen _ 









52 



Open aspen 





10 

 8 25 



84 



39 

 37 

 43 

 86 







37 



Burn, grassv 



46 

 95 



50 

 46 

 51 

 90 

 60 

 85 

 :s 



38 

 81 



50 

 40 

 47 

 89 



10 

 67 



26 

 30 

 33 

 79 

 33 

 63 

 26 

 85 

 100 



5o 

 39 



17 



1.4 



53 





l a 



54 

 55 



Big Cottonwood water- 

 shed, Wasatch National 

 Forest, Utah: 

 Aspen, northeast slope- 

 Do 





8 



■ 



55 



Do 



- 



55 



Do . 





56 



Do 



fi 



56 



Do 







4 



56 



Do 





1 



56 



Do. 







56 



Do 







57 

 58 

 59 



Aspen, west slope 



Burn, log-strewn 



Do 



29 

 78 

 62 

 36 



14 

 68 

 51 

 27 



59 

 47 

 24 



■I 

 .6 



.6 



60 



Burn, brushy 













1 For full description of sites, see paragraphs numbered correspondingly in Appendix, page 51 . 

 a From record at last examination. 



3 Survival, fifth year, 61 per cent; sixth year, 27 per cent; seventh year, 24 per cent. 



4 Survival, fifth year, 29 per cent; sixth year, 23 per cent; seventh year, 16 per cent. 

 « Survival, fifth year, 18 per cent; sixth and seventh years, 4 per cent. 



6 The following year, 11 per cent survival, and the sixth year only 2 per cent. 



7 This survival maintained for two years. 



8 Observation in seventh year showed 12 per cent survival. 



Excellent results were obtained on the Big Cottonwood watershed 

 by planting good 3-1 stock under aspen of moderate density with 

 little undergrowth. Survivals of 100. 99, and 98 per cent at the end 

 of first year and 86 per cent at end of fourth year, with vigorous 

 tree percentages of 100, 79, and 63, respectively, are very encouraging. 

 On the other hand, survivals at the end of fourth year of 37, 39, and 

 (with 3-0 stock) 43 per cent, and 30, 26, and 33 percentages of vigorous 

 trees, respectively, were obtained in stands of aspen of moderate 

 density where shrubs and herbaceous plants were sufficiently dense 

 to smother the spruce transplants. 



A study of the plantations listed in Table 14 leads to the following 

 conclusions: 



Recent burns on north slopes in the spruce zone can be successfully 

 reforested with 3-1 Engelmann spruce, especially if protected by 

 down logs, stumps, and open brush. (PL VII, Fig. 2.) 



Northern aspects above an altitude of 7,400 feet covered with aspen 

 of medium density but without dense underbrush and herbaceous 

 plants are also favorable sites for the planting of 3-1 or 3-2 Engelmann 

 spruce. This species may be established on warmer sites than where 

 it is found naturally, provided there is a dense cover, and the survival 

 will vary directly with the amount of shade. 



