HORNSBY, J. — Laxton Park Experiments on Charlock 



Spraying, 1899. 



Agr. Gaz. (London), Vol. 50 (1899), p. 232. E. S. R. 1 1, p. 461. 



On Barley fields 7% to 10 per cent solutions. S. of I. applied at the 

 rate of 32-40 galls per acre was not effective. 



JSOTING, ( ).— Die Vertilgung des Hederichs durch Be- 

 spritzen mit Eisen vitriollssung. 



Sachs. Landw. Ztschr. (1900), S. 174. 

 Jahresber. Agr. Chem., Bd. 43, S. 352. 



A 15 percent solution S. of I. proved sufficient, though 20 per cent 

 solution did no harm to Oats. The younger the Charlock, the easier 

 it is destroyed. 



JOURNEE, C. — Destruction of Charlock by Spraying with 

 Solutions of Iron and Copper Sulphate. 

 Agronome, 1899, p. 435. E. S. R. 12, p. 351. 



KEISER, ( ). — Zur Frage des richtigen Zeitpunktes zur 

 Hederich-Vertilgung. 

 Nass. Landw. Ztschr. (1899), S. 252. 



Charlock need not be sprayed with S. of I. solution at too early stage 

 for the weed is injured even when in bloom. 



KLOCKE, E. — Hederichvertilgung mit Eisenvitriol und die 

 Syphoniaspritze. 

 Fuhling's Landw. Ztg. 1898. S. 625. 



Experimented with Oats using a 25 percent solution and 60 litres per 

 Morgen. The Charlock was in bloom and had overgrown the Oats. 

 Charlock was killed and the Oat plants slightly touched, but recov- 

 ered and grew with unexpected vigor. 



KRAUS, C. — Nochmals zur Vertilgung von Hederich durch 

 Bespritzen mit Eisenvitriollosung. 



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

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



Results doubtful. 



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

 besonderer Berucksichtigung der Eisenvitriol- 

 bespritzen. 



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. 



KUNTZE-DELITZSCH, L.— Vertilgung des Hederichs mit- 



tels Eisenvitriollosung 

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



A 15 per cent solution S.of I. applied in form of a spray at the begin- 

 ning of flowering is effective; applied later, ineffective. 



