Is nitrate reduced to ammonium in waterlogged acid sulfate soil?K LSahrawatauthorA study of transformations of added nitrate nitrogen in an acid sulfate soil under waterlogged conditions indicated that chemical reduction of NO3–N to NH4–N is effected by high concentrations of ferrous iron, released in the soil following flooding and reduction of ferric to ferrous iron. Soil ScienceFertilizer Applications1980KluwerArticle