[Container trials with calcium treated sludge from The West Fiord Sewage Works (VEAS) 1989-93. Growing of barley and ryegrass and control of the wastewater]

agua de lluvia agua de riego azote cadmio cadmium calcio calcium crop yield cultivos de primavera culture de printemps deep placement eau d'irrigation eau de pluie eau de ruissellement fosforo hordeum irrigation water localisation en profondeur lodos residuales lolium nitrogen noruega norway phosphore phosphorus plant containers pot experimentation rainwater recipiente de cultivo rendement des cultures rendimiento de cultivos runoff water sewage sludge spring crops temperatura temperature textural soil types tipos texturales de suelos type de sol textural