212 KRAUS, C. — Nochrnals zur Vertilgung von Hederich 



durch Bespritzen mit Eisenvitriollosung. 



Deut. Landw. Presse, (1899), S. 659. 

 Jahresber. Agr. Chem. 42, S. 351. 

 Results doubtful. 



213 KRUGER, F. — Aufruf zum Kampf gegen das Unkraut, 



mit besonderer Berucksichtigung der Eisenvi- 

 triolbespritzen. 



Wochenbl. d. Landw. Vereins in Bayern, (1904), S. 486. 



A 15 per cent solution S. of I. applied at the rate of 400-500 1. per 

 ha. 



214 KUNTZE-DELITZSCH, L.— Vertilgung des Hederichs 



mittels Eisenvitriollosung. 



Ztschr. Ver. Deut. Zuckerindus. (1899), S. 699. 



A IS per cent solution S. of I. applied in form of a spray at the 

 beginning of flowering is effective ; applied later, ineffective. 



215 LAMBIN, ( ). — Effets du Sulfate de fer en Agricul- 



ture. 



Bui. Soc. Hort. de Soissons, (1888). 



216 LARBALETRIER, A. & L. MALPEAUX.— Note sur 



Taction des engrais magnesiens et du sulfate de 

 fer. 



Ann. Agron., T. 22, (1896), p. 20-32. 

 Jahresber. Agr. Chem., N. F., Bd. 39, S. 241. 



Experiments made applying S. of I. to soil at the rate of 150 Kgo. 



per hectaire. Soil was composed of — 



Quartz sand 50.00 



Clay ' 9.70 



Humus 5.30 



Nitrogen 17 



Phosphoric Acid (P2 O5) 135 



Potash (K2 O) 22 



Magnesia 21 



The results were indefinite as a rule. The starch content ap- 

 peared to be reduced in potatoes, and the sugar content increased 

 in beets. 



217 LARBALETRIER, A.— Les Engrais et la fertilizer du 



sol. Paris, 1891, p. 329. 



