Immobilization and Mineralization of Nitrogen in Several Organic Fractions of Soil
1963
Stewart, B. A. | Porter, L. K. | Johnson, D. D.
Straw and N fertilizers were incubated in soil and changes in content of some organic N fractions were measured. Ammonia and nitrate N, as well as the N in several organic fractions, were determined to detect changes in the organic fractions which could be related to increases or decreases in the inorganic N. Most of the N immobilized during incubation with soil and straw was found in the nondistillable acid-soluble N fraction of the hydrolysate. Although the nondistillable acid-soluble N fraction constituted only about one-half of the total organic N, studies using N¹⁵ showed that about about three times as much fertilizer N went into this fraction during immobilization as went into the distillable acid-soluble and acid-insoluble N fractions combined.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by National Agricultural Library