Response of wheat and wheat-weeds to allelopathic effects of sorghum residues under varying levels of fertility

abonos fosfatados abonos nitrogenados abonos potasicos application rates caracteres de rendimiento composante de rendement crecimiento croissance crop residues dose d'application engrais potassique escarda germination growth malezas mauvaise herbe nitrogen fertilizers phosphate fertilizers potash fertilizers rendement rendimiento residuos de cosechas triticum aestivum weed control weeds yield components yields