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Nitrogen Mineralization in Soils Previously Amended with Organic Wastes 1
Author(s) -
Griffin G. F.,
Laine A. F.
Publication year - 1983
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1983.00021962007500010031x
Subject(s) - mineralization (soil science) , soil water , nitrogen , manure , agronomy , incubation , chemistry , nitrogen cycle , moisture , sewage sludge , zoology , sewage , environmental science , biology , soil science , environmental engineering , biochemistry , organic chemistry
Long‐term aerobic incubations were conducted on soils previously amended with cow and poultry manure, sewage sludge, and mycelium to determine N mineralization potential (N o ) and N mineralization rate constant (k). Values for N o were higher than those reported by other workers. The k values varied among soils sufficiently so that a single value could not be assumed for any one group of soils. Corn ( Zea mays L.) was grown on five of the soils used in the incubation study. Soil moisture and soil temperature data from N o N0 and initial mineral N, estimates of N available to the crop. Yield and N uptake correlated well with the parameter N o × k, but N o alone proved to be a very poor predictor of yield or N uptake. K values, which can be estimated only from lengthy incubations, are required to obtain accurate estimates of N availability.