Spatial and Temporal Distributions in Sandy Soils with Seepage Irrigation: I. Ammonium and Nitrate.Published in:Soil Science Society of America Journal, 2009, v. 73, n. 3, p. 1044, doi. 10.2136/sssaj2008.0206By:Sato, Shinjiro;Morgan, Kelly T.;Ozores-Hampton, Monica;Simonne, Eric H.Publication type:Article