[Small plot trials and container trials with slightly decomposed, heat dried sludge from Germany and England 1995-97. Growing of barley and ryegrass. Trials at Crop Research [Station] Kise]

abonos nitrogenados amendement organique analyse de sol azote crop yield cultivos de primavera culture de printemps fosforo growing media hordeum lodos residuales lolium nitrogen nitrogen fertilizers noruega norway nutritive value organic amendments organic matter peat phosphore phosphorus rendement des cultures rendimiento de cultivos sewage sludge soil testing spring crops substrat de culture substratos de cultivo tourbe turba valeur nutritive valor nutritivo