Fly ash application on two acid soils and its effect on soil salinity, pH, B, P and on ryegrass growth and composition

acid soils amendement du sol application rates bore boro boron cendre volante chemical composition composition chimique crecimiento croissance dose d'application enmiendas del suelo fly ash fosforo growth lolium perenne nitosol nitosoles nitosols ph del suelo ph du sol phosphore phosphorus polvo de cenizas rendement rendimiento salinidad del suelo soil amendments soil ph soil salinity sol acide yields