126 



EXPEEIMENT STATION RECORD. 



Relative increase in yields from 'Norivay nitrate, cyanamid, and ammonium 

 sulphate. (Sodium nitrate=100.) 



Comparisons of 37 per cent potash salt and kainit, and of different time of 

 application of these salts. — Twenty series of trials were conducted during 

 1911-12 on clay, loam, or liumus soils, in which similar amounts of potash in 

 37 per cent salt and in kainit were applied either in the fall or in the spring. 

 The results obtained suggest that the two fertilizers were of equal value for 

 spring grains and sugar beets when the potash was applied in the fall. For 

 mangels the kainit proA'ed slightly more effective than the 37 per cent salt, 

 while for ruta-bagas and turnips it proved somewhat inferior, and for potatoes 

 considerably inferior, to this salt. The effect of 37 per cent salt with spring 

 grains, mangels, ruta-bagas, and turnips was similar whether applied in the 

 late fall (November and December) or the early spring, while with sugar beets 

 and potatoes fall applications proved considerably more effective. The fer- 

 tilizer value of kainit was the same for fall and spring applications in the case 

 of sugar beets and mangels. For spring grains the applications of kainit in 

 the spring proved more effective than fall applications, while the opposite held 

 true with ruta-bagas. In the case of potatoes a very considerable difference 

 was observed in favor of fall applications of kainit. 



Eactors relating to the availability of nitrogenous plant foods, J. G. 

 LiPMAN ET AL. (Abs. in Orig. Commun. S. Intcrnat. Cong. Appl. Chem. [Wash- 

 ington and New York^, 26 (1912), Sects. Vla-XIh, App., pp. ISl-lSJ,).— This 

 is a brief account of investigations more fully reported elsewhere (E. S. R., 

 28, p. 725). 



The world's consumption of nitrogen, 1911-12, A. Bertrand (Engrais, 2S 

 {1913), Nos. 11, pp. 293-301, figs. 7; 12, pp. 322-325, fig. J).— The production 

 and consumption of nitrogen in form of sodium nitrate, ammonium sulphate, 

 calcium cyanamid, and calcium nitrate are discussed in detail and illustrated 

 graphically. 



Oxidation of atmospheric nitrogen and development of resulting indus- 

 tries in Norway, S. Eyde (Trans, and Organ. 8. Internat. Cong. Appl. Chem. 

 [Washington and New York^, 28 (1912), pp. 169-181, pis. 13).— This address 

 has already been noted from other sources (E. S. R., 28, p. 221). 



The Norwegian nitrate industry, S. Eyde (Umschau, 17 (1913), No. IS, 

 pp. 255-260, figs. 6). — This article briefly describes plants which have been 

 established for the manufacture of nitrogen compounds by the Birkeland and 

 Eyde process at Notodden and the Schonherr process at Rjukan, Norway. 



Experiments on the method of applying sodium nitrate, A. Demolon and 

 G. Beouet (Sta. Agron. Aisne Bui., 1912, pp. 26-32, fig. i).— Applying the results 

 of previous investigations on the diffusion of nitrate in the soil (E. S. R., 27, 

 p. 420), the author studied the direct and after effects of nitrate of soda ap- 



