Critical remarks concerning the validity of the mitscherlich effect law F. Van Der Paauw OriginalPaper Pages: 97 - 106
Beiträge zur Physiologie und Morphologie der Streptomyceten W. von FlaigH. BeutelspacherG. Segler-Holzweissig OriginalPaper Pages: 118 - 127
Centrospora root rot ofPrimula Malacoides, a serious soil-borne disease in Denmark Paul Neergaard OriginalPaper Pages: 128 - 140
On the effect of storage and temperature on the exchangeable manganese in soil samples Else Boken OriginalPaper Pages: 154 - 163
Field plot studies with sawdust for soil improvement Stuart DunnL. P. Wolfe Jr.John R. Baker OriginalPaper Pages: 164 - 170
A method for determining in peacultures, the amount of molecular nitrogen fixed and the amount of combined nitrogen taken up from the soil Artturi I. VirtanenSynnöve Saubert-Von Hausen OriginalPaper Pages: 171 - 177
Molybdenum nutrition of crop plants C. M. JohnsonG. A. PearsonP. R. Stout OriginalPaper Pages: 178 - 196