[Agricultural usability of sewage sediments in the light of field experiments. 2]

abonos application rates ascaris crop yield crops cultivos cultivos de invierno culture d'hiver dose d'application engrais organique fagopyrum esculentum higiene hygiene lodos residuales lupinus luteus papa plante de culture pomme de terre potatoes rendement des cultures rendimiento de cultivos salmonella secale cereale sewage sludge soil sol suelo winter crops