148 SOILS: PE0PEETIE8 AND MANAGEMENT 



The Hxtmits op a Russian Alluviai 



Soil 







Percentage or 



Percentage of 



Depth in Feet 



Percentage or 

 Humus 



Nitrogen in 

 Humus 



Humous Nitrogen 

 IN Soil 



1 



1.21 



5.30 



.064 



2 



1.16 



4.32 



.054 



3 



1.14 



3.87 



.044 



4 



1.17 



3.76 



.344 



5 



.74 



2.16 



.016 



6 



.60 



2.66 



.016 



7 



.47 



2.54 



.012 



8 



.78 



1,54 



.012 



9 



.54 



2.24 



.012 



10 



.52 



1.15 



.006 



11 



.53 



1.51 



.008 



12 



.44 



1.81 



.008 



Other depth, relationships, especially regarding the 

 proportions of carbon, humus, and nitrogen, are brought 

 out in the following data, obtained by Alway and Vail ^ 

 in the study of Nebraska Soils : — 



Composition of a Nance County, Nebraska, Soil near 



Genoa 



Depth 



Percent- 

 age OF 



Nitrogen 



Percent- 

 age OF 

 Carbon 



Percent- 

 age OF 



Humus 



Percent- 

 age OF 



Ash in 

 Humus 



Ratio of 



IN Feet 



C 



N 



H 



N 



c 



H 



1 



.255 



2.61 



2.47 



1.61 



10.2 



9.7 



1.0 



1 



.102 



.85 



1.00 



.90 



8.3 



9.8 



.9 



3 



.056 



.31 



.40 



.52 



5.5 



7.1 



.8 



4 



.042 



.24 



.30 



.64 



5.7 



7.1 



.8 



5 



.034 



.17 



.19 



.33 



5.0 



5.6 



.9 



6 



.027 



.14 



.16 



.36 



5.2 



5.9 



.9 



1 Alway, F. J., and Vail, C. E. The Relative Amounts 

 of Nitrogen, Carbon, and Humus in Some Nebraska Soils. 

 Nebraska Agr. Exp. Sta., 25th Ann, Rept., p. 155. 1912. 



