130 GOETHE, R. — Untersuchugen von mit Eisenvitriol ge- 

 diingten Reben. 



Ber. K. Lehranst. Wein, Obst u. Gartenbau Geisenheim, (1891- 



92), S. 48. 



Zetschr. Pflanzenkrank., Bd. Ill, S. 179. 



The practice of using 2 Kgo. S. of I. per vine showed to disad- 

 vantage in case of hot house experiments. The injurious action 

 first became evident the second year, and this after the vines had 

 been watered with warm water in Feb. and Mar. The leaves 

 rolled up and the whole plant stopped growing. In the summer 

 the vines recovered their normal condition and growth. (This 

 was to be expected). 



131 GOETHE, R. — Eisenvitriol als Heilmittel der Gelbsucht 

 der Obstbaume. 



Ber. K. Lehranst. Wein, Obst u. Gartenbau Geisenheim, (1889- 

 90), S. 30. 



Successfully used. Small trees received 1 Kgo., large trees 2 

 kgs. Either there are. trees requiring more iron or there are trees 

 more inclined to Chlorosis. Treated trees were less attacked by 

 the leaf Aphis & Schizoneura. 



132 GOETHE, ( ).— (Chlorosis of Grape Vines.) 



Pomal. Monatsch. (1891), Heft. II. 



Centbl. Agr. Chem. (1891), S. 30. 



For small trees used 1 Kgo. (2 lbs., 3 oz.), for large trees 2 Kgs. 

 (4 lbs. 6 oz.) S. of I. to a tree. Applied by strewing in a trench 

 8 in. wide and 10 in. deep, circling around the stem of the tree 

 at distance of 20 to 40 inches away from the stem. Sprinkled the 

 salt with water and covered with soil. 



133 GRAFTIAU, J. — Le chimie et la lutte contre les mau- 



vaises herbes armes nouvelles a la disposition 

 des cultivateurs. 



Ingen. Agr. Gembloux, An. 10, (1900), p. 413. 



134 GRANDEAU, L. — Destruction de la cardamine des pres 



par le sulfate de cuivre. Necessite de substituer 

 le sulfate de fer au sel de cuivre. 



Jour. Agr. Prat. T. I, (1900), p. 742. 



Used a 15 per cent solution S. of I. for the destruction of Carda- 

 mine pratensis (Cuckoo-Flower). 



