



YIELD. 29 
of moderate fertility. A plantation on similar soil even without 
thinnings would exceed these stands. 
TABLE 16.—Two fuliy stocked stands of blackjack. (Trees per acre.) 









pee Ble Black- Black- 
= jack 62 | jack 82 a, : jack 62 | jack &2 
Acne years old,| years old, eae years old,| years old, 
8M. | °34.3 feet | 42 feet 8h. | °34.3 feet | 42 feet 
high. high. high. high. 
Inches. Inches 
Aa Ole se tear 21.6 19. 2 DEH (SRA ae 0.0 0. 2 
(Ue ee eee 39. 4 40.8 28-30 Sane ene AO el Cena hs 
OED ey eee 38. 4 43.8 BUS Rs oe Aelia |e Meee eee 
lpia eee ee 21.6 27.4 Overt2e =e. 38. 0 46. 2 
NG-IS eee ee a: 13.0 11.6 Over 18......! 3. 4 Uo” 
10) eerie 2.6 5.6 
2922 4G ee .6 1.4 Total over 4.. 137. 4 150. 0 




YIELD. 
AVERAGE AND MAXIMUM YIELD. 
As compared with the Pacific coast, the yield of western yellow 
pine in Arizona and New Mexico is relatively small. On the Tusayan 
and Coconino National Forests are approximately 1,317,000 acres of 
the western yellow-pine type. Allowing for the underrun of past 
estimates, the stand of western yellow pine on the average acre for 
the entire area, including parks, barren land, and cut-over areas, 1s 
about 3,500 board feet to the acre, or 2,250,000 board feet to the sec- 
tion. The best township on the two Forests is estimated to cut 
177,365,000 board feet, or, roughly, 7,700 board feet to the acre, 
which is approximately 5,000,000 feet to the section. The largest 
recorded cut in any lumbering operation within the Coconino and 
Tusayan National Forests was 9,522,000 board feet to the section. 
According to T. A. Riordan, president of the Arizona Lumber & 
Timber Co., however, this was an extraordinary section, and no other 
has cut within a couple of million feet of this quantity. On 5,920 
acres taken as an average for a large timber sale on the Coconino 
Forest, the average stand per acre was blackjack 516 feet and yellow 
pine 3,299 feet, a total of 3,813 feet. On another sale 2,135 acres 
averaged 725 board feet of blackjack and 5,797 of yellow pine, or a 
total of 6,522 board feet per acre. Exclusive of small parks and 
openings the average stand per acre on the forested area amounted 
to 7,390 board feet. On a timber-sale area of 9,520 acres on the 
Tusayan Forest, of which 6,609 acres is forested and the remaining 
2,911 made up of open parks, the total cut is estimated at 31,000,000 
board feet, or 3,256 board feet per acre. For the forested area only 
the cut will average 4,691 board feet per acre. On this sale about 25 
per cent of the stand was left uncut to reseed the ground. 

