Surface Application of Gypsum and Ammonium Nitrate for Amelioration of a Black Solonetz Soil

Heavy rates of gypsum surface applied alone and in combination with ammonium nitrate to a Black Solonetz under dryland conditions favorably affected the chemical properties of the Ap and Bnt horizons and increased water penetration into the Bnt. Gypsum alone was equally as effective in ameliorating the soil as the combined treatment.