Exploratory pot experiments on sensitiveness of different crops to sodium: B. Oats J. J. Lehr OriginalPaper Pages: 289 - 297
Comparative effects of sodium nitrate and calcium nitrate on the potato Onorato VeronaAntonio Benvenuti OriginalPaper Pages: 298 - 302
The Donnan-principle in the ionic relations of plant roots G. J. Vervelde OriginalPaper Pages: 309 - 322
Grundlegende Bemerkungen zum „Umkehrbaren ertrags-Stickstoff-Gesetz” von O. W. Willcox. (The inverse yieldnitrogen law) Eilh Alfred MitscherlichPaul Schäfer OriginalPaper Pages: 323 - 335
Biosynthesis of amino acids according to soil fertility Fred E. KoehlerWilliam A. Albrecht OriginalPaper Pages: 336 - 344
A laboratory study of the decomposition of vegetable debris in relation to the formation of raw humus D. R. Johnston OriginalPaper Pages: 345 - 369
The volatile fatty acids present in fresh and in fermented marrow-stem kale A. J. G. BarnettR. E. B. Duncan OriginalPaper Pages: 370 - 376
Quick analysis of small samples of new potato varieties A. H. A. De WilligenP. W. De Groot OriginalPaper Pages: 377 - 383