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Nitrogen Recovery from a Soil Profile by Bromus inermis 1
Author(s) -
Ogus Lufti,
Fox R. L.
Publication year - 1970
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/agronj1970.00021962006200010023x
Subject(s) - bromus inermis , loam , agronomy , nitrogen , bromus , soil horizon , environmental science , hordeum vulgare , chemistry , poaceae , biology , soil water , soil science , organic chemistry
Nitrogen recovery was estimated as a function of depth of placement and time from nitrate fertilizer placed at various depths in brome grass ( Bromus inermis , Leyss) sod at the beginning of spring growth. The soil was a Crete silty clay loam with a clay B horizon which severely restricted root penetration. About 43% of the N placed in the C horizon (105 cm) was recovered in two growing seasons. Per unit mass, roots in the C horizon took up over 300 times more N than did roots in the surface soil. Total N in the grass reached a maximum then declined rapidly as the plants matured.