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Effect of Soil Moisture on Ammonification and Nitrification in Two Northern Plains Soils
Author(s) -
Reichman G. A.,
Grunes D. L.,
Viets F. G.
Publication year - 1966
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1966.03615995003000030019x
Subject(s) - chernozem , nitrification , soil water , nitrogen cycle , water content , nitrogen , chemistry , moisture , environmental chemistry , agronomy , environmental science , soil science , zoology , geology , biology , geotechnical engineering , organic chemistry
Samples of a Chestnut and Chernozem soil, with and without additions of (NH 4 )SO 4 and K 2 HPO 4 , were incubated at constant water contents ranging from suctions of 0.2 to about 100 bars, and the exchangeable NH 4 ‐ and soluble NO 2 ‐N measured periodically. NO 2 ‐N in excess of 1/3 ppm was never detected. Addition of P had no effect on N transformations. Ammonification and nitrification of soil N were almost directly proportional to soil water content at suctions between 0.2 and 15 bars. Measurable ammonification and nitrification occurred at a suction of 15 bars.