In this oakbrush zone, F. S. Baker and 

 Clarence F. Korstian carefully studied cli- 

 matic, soil, and other factors that might ac- 

 count for the absence of ponderosa. At the 

 same time, they established another study 

 area, some 25 miles distant on the east side of 

 the Wasatch Plateau, where ponderosa grows 

 in commercial stands. Baker's diary from Feb- 

 ruary 7 to October 5, 1916, records planting 

 of some 4,500 trees within a 2-month period. 

 Of these, 2,000 were ponderosa pine; the rest 

 were lodgepole (P. contorta) (400), Douglas- 



fir (Pseudotsuga menziesii) (1,000), Norway 

 spruce (Picea abies) (700), and western larch 

 (Larix occidentalis) (400). At the "oak-brush 

 station" (apparently the area now labeled 

 Plant Development Station 2) and in the ad- 

 jacent area one can today see many trees from 

 these early plantings. They vary from 30 to 

 50 feet in height, have diameters of 8 to 10 

 inches, and look reasonably thrifty. A few 

 may be seen beside the Ephraim-Orangeville 

 Highway (fig. 14), as many of them are not 

 more than 100 yards from the road. Close in- 



jure 14. — Ponderosa pine trees planted by F. S. Baker about 1915 in the oakbrush zone, as seen from the 

 Ephraim-Orangeville road in 1970. 



33 



