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Effects of gamma irradiation on the available nitrogen status of soils
Author(s) -
Singh B. R.,
Kanehiro Y.
Publication year - 1970
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740210202
Subject(s) - soil water , incubation , nitrogen , irradiation , gamma irradiation , chemistry , zoology , environmental chemistry , radiochemistry , environmental science , biology , soil science , biochemistry , physics , organic chemistry , nuclear physics
Five Hawaiian soils were irradiated at various levels of gamma irradiation and analysed for available (NH 4 and NO 3 ) nitrogen content immediately after irradiation, and after periods of incubation. The release of NH 4 ‐N generally increased with increasing dosages in all soils, while NO 3 ‐N decreased in some soils. Incubation studies showed that the loss of NO 3 ‐N continued even after several days of irradiation. The rate of NH 4 ‐N mineralisation in irradiated soils was highest during the first seven days and declined later on.