title: Sewage sludge as conditioner for improving soils affected by sulfur dioxide.
mesh_terms: D006863:Hydrogen-Ion Concentration; D006109:Poaceae / Q000254:growth & development; D012722:Sewage; D012987:Soil / Q000032:analysis; D013458:Sulfur Dioxide; D013997:Time Factors
chemical_list: D012722:Sewage; D012987:Soil; D013458:Sulfur Dioxide