Transformation of forms of potassium in soil during long-term potassium fertilization A. V. PeterburgskyF. V. Yanishevsky OriginalPaper Pages: 199 - 210
Nitrogen-fixing bacteria of the genusBeijerinckia Derx in the rhizosphere of sugar cane Johanna Dobereiner OriginalPaper Pages: 211 - 216
A requirement of molybdenum for the symbiotic nitrogen fixation in alder (Alnus glutinosa Gaertn.) J. H. Becking OriginalPaper Pages: 217 - 227
Some physical properties of pot plant composts and their effect on plant growth A. C. Bunt OriginalPaper Pages: 228 - 242
Contribution of rhizoplane organisms to the total capacity of plants to utilize organic nutrients Eva F. EstermannA. D. McLaren OriginalPaper Pages: 243 - 260
The growth of saprophytic fungi on root surfaces G. S. TaylorD. Parkinson OriginalPaper Pages: 261 - 267
Nutrition and physiology of denitrifying bacteria Concepcion L. ValeraM. Alexander OriginalPaper Pages: 268 - 280