Irrigation water quality and nitrogen for yield and water-use efficiency of barley (Hordeum vulgare L. Cv. Ardhaouri) in the arid climate of southern Tunisia [Poster paper]

abonos fosfatados abonos nitrogenados agricultura de regadio agua de riego arid zones calidad del agua caracteres de rendimiento composante de rendement eau d'irrigation engrais liquide exigence des plantes fertigation fertilidad del suelo fosforo hordeum vulgare irrigated farming irrigation fertilisante irrigation systems irrigation water liquid fertilizers necesidades de las plantas nitrogen fertilizers nutrition des plantes phosphate fertilizers phosphore phosphorus plant nutrition plant requirements plant soil relations plant water relations relaciones planta agua relaciones planta suelo relation plante eau relation plante sol rendement rendimiento salinidad del suelo semiarid zones sistemas de riego soil fertility soil salinity tunisia tunisie uso del agua utilisation de l'eau water quality water use yield components yields zone aride