8 BULLETIN 1105, IT. S. DEPARTMENT OF AGRICULTURE. 



Table 4. — Sample of individual seedling tyecord {beginning in second year). 



G=Growing condition. Go=Growing but leader injured. ?=Doubtful. D=Dead. L=Living but not 



thrifty. 



Seedling 

 number, 

 plot lr>. 



1915 



1916 



1917 



19181 



1919 



1920 



Seedling 

 number, 

 plots 2a 

 and 2b. 



1915 



1916 



1917 



19181 



1919 



1920 



1615 



G 

 G 

 Go 



G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 



G 

 G 

 G 

 G 

 G 

 G 

 D 

 D 

 G 

 D 

 D 



G 

 G 

 G 

 G 

 Go 

 ? 





G 

 Go 

 G 

 G 

 D 

 D 



D 

 G 

 G 

 G 



1807 



1808 



1809 



1810 



1811 



1812 



1813 



1814 



1815 



1816 



1817 



1829 



G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 

 G 



G 

 D 

 D 

 Go 

 G 

 D 

 G 

 D 

 D 

 G 

 D 



G 





G 



D 



1616 





1617 











1618 



G 



D 





G 



G 



1619 





1020 









1621 



D 









1622 















1623 



G 





G 



G 











1624 



G 





G 



G 



1625.. 













1639... 



G 

 G 

 G 





G 

 G 



G 



G 

 G 

 G 



G 

 G 

 G 





D 

 G 

 L 





1640... 







1830 







G 



1641 .... 







1831 







L 















1 No record. 



Up to 1914 very few seedlings survived the first season. Although 

 no counts were made on these plots between 1909 and 1914, it is 

 known that considerable numbers started in 1910 and 1912. In 1914 

 the first-year seedlings were abundant for the first time since the 

 establishment of the plots, but the records on 5 by 10 foot plots 

 (Table 3) showed a low survival. Even at the present time 20 of these 

 small plots with an aggregate area of 1,000 square feet contain only 

 3 seedlings of sufficient size to warrant any hope of ultimate sur- 

 vival. Reducing these figures to an acreage basis, we have 130 seed- 

 lings, 4 and 6 years old, per acre. These figures are much lower than 

 those obtained by extensive surveys in 1920, which showed an aver- 

 age of 222 seedlings per acre ranging from 4 to 12 years of age. 

 This discrepancy is attributed to the fact that the 5 by 10 foot plots 

 did not adequately represent the better sites. (See Table 10.) 

 Although the area is still not fully stocked, the results show unmis- 

 takable progress. To those who are accustomed to thinking of re- 

 production in terms of thousands instead of hundreds of seedlings 

 per acre, it should be explained that dense stocking, though desir- 

 able, is not necessary in western yellow pine. This subject will be 

 discussed further in another section of this report. At any rate, the 

 seedling crop which originated in 1919 promises to complete stock- 

 ing. Counts in August, 1919, showed an average of about 60,000 

 per acre on these plots. In September, 1921, about 7,500 per acre 

 survived. The chances are good for 20 per cent of these to become 

 established. Ten per cent would prove ample, and a still lower per- 

 centage would suffice to satisfy the minimum requirements. 



On the Datil National Forest results prior to 1919 were about the 

 same as on the Coconino and Tusayan, but comparatively few seed- 

 lings started in 1919. On the Santa Fe National Forest, areas logged 

 in 1910 are now almost completely restocked. 



