1919] Pendleton: A Study of Soil Types 441 



Table 55 — Diablo Clay Adobe, Second Crop 



Soy Beans (following barley) 



Planted, June 6, 1916. Harvested, November 14, 1916 



Altamont clay loam. First crop. — The crops planted in this soil 

 were wheat, barley, oats, bur clover, Pfaaseolus, and oats and bur 

 clover together. The standard number to which the plants were 

 thinned was six, except in the oats and bur clover series, where three 

 plants of each were allowed to remain. 



With regard to the comparative crop producing power of these 

 soils under these conditions, soil no. 4 is the best, with soil no. 3 as 

 the second, and soil no. 7 was the poorest (tables 56-60, fig. 29). The 

 dry weight data decidedly corroborate the impression given by the 

 greenhouse appearance of the crops. However, as all the crops were 

 so small on all the series, the figures do not show as much as they 

 might have shown had the growth been more nearly optimum for the 

 several crops. 



Table 56 — Altamont Clay Loam, First Crop 



Wheat 



Planted, February 25, 1916. Harvested, July 10, 1916 



Straw Grain Total dry matter 



. A . . A 



No. Average Average Average 



Pot plants Weight weight Weight weight Weight weight Notes 



3-1 6 2.62 1.23 3.85 



3-2 6 2.93 1.09 3.92 



3-3 6 2.86 2.80 1.04 1.12 3.91 3.92 



4-1 6 4.20 1.78 5.97 



4-2 6 4.03 1.22 5.25 



4-3 6 6.20 4.81 1.13 1.38 7.34 6.19 



7-1 6 2.64 1.11 3.76 



7-2 6 2.58 0.99 3.64 



7-3 6 2.90 2.71 0.71 0.93 3.61 3.64 



