VIVIEN, A., et L. GESCHWIND.— Essais sur la destruc- 

 tion des Sanves. 

 Engrais (1899), pp. 880-904. 



Used mixtures of S. of I. and Sodium Nitrate with satisfactory 

 results. 



Sulphate of Iron Nitrate of Soda Rate per Hectare 



10 Kgo. ii Kgo. 10 Hkt. 



5 " 3 " 10 



25 " 10 " 



20 " 10 " 



VOELCKER, J. A.— The Destruction of Charlock. 



Jour. Roy. Agr. Soc. England. 3rd Ser. Vol. 10, (1899) p. 767. 



WAGNER, Ph.— Destruction des Sanves. 



Jour. Agr. Prat. T. I. (1898), p. 577. 



Used 15 per cent solution of S. of I. at the rate of 600 1. per hectare. 

 Did not observe injury to Clover, on contrary the plants took on a 

 fresher appearance. 



WEINZIERL, THEO. RITTER von.— Uber die Bekampfung 



des Ackerhederichs. 



Pub. K. K. Samen-Kontroll. Stat- Wien, No. 199, (1899), S. 13. 



Used a 15 per cent solution of S. of I. in form of a spray. The S. of 

 I. began to work inside of twenty-four hours. Cereals only slightly 

 affected, especially Barley, but recovered quickly. 



Peas and Clover are badly injured. 



WEISS, J. E. — Die Bekampfung des Hederichs durch Diinge- 

 salze. 



Wchnbl. Landw. Ver. Bayern, (1901), S. 460. 

 Some comparisons made with S. of I. 



WEISS, J. E. — Eine neue Hederichvertilgungs-Methode. 



Deut. Landw. Presse (1899), S. 540. 

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



Secret compound called " Heufeld." 



WEYDEMANN, M. — Nochmals zur Hederichvertilgung mit 

 Eisenvitriol. 



Deut. Landw. Presse, (1889), S. 703. 

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



WINTER, ( ).— ( Hederichvertilgung ) 

 Ztschr. Landw. Kammer Schlesien, (1898), S. 721. 



