Browse on keywords: fertility WA soil fertility
Search results on 07/19/18
2137. Fulmer, E.. 1896. Some notes concerning the nitrogen content of soils and humus.. WA Agr. Expt. Sta. Bull. #23.
In Whitman Co., the organic matter in cultivated soils ranged from 3-8%. The first part of this bulletin is an excellent discussion on soil N components. "The author became concerned that humus was not receiving the attention that its importance as a factor in soil fertility demanded. Only a small proportion of soil analysis has included a determination of humus..." T: Shows fractions of soil N for soils from various counties - including Whitman Co. includes: Humus; Total N in soil; Organic N; N in humus; Organic matter.