448 ( )._( Sulphate of Iron kil , s Dodder.) 



Cape Agricultural Journal, Vol. X, p. 619. 



449 (M.)— Destruction of Tree Roots by Fungus. 



Agr. Jour. Cape Colony (Cape Town), Vol. Ill, (1891), pp. 169. 

 tor the treatment of Agaricus melleus it is recommend to re- 

 move the earth from about the tree, apply the S. of I. and 

 cover the salt with fresh soil. 



450 (SPRECHSAAL.) — Die Wirkungen der iiblichen Dis- 



infectionsmittel. 



Ztschr. Pflanzenkrank, Bd. VII, S. 46. 



In the use of S. of I. there is danger of injuring Beets, Rape, 

 Wheat, Clover. Spores are not easily killed even when large 

 quantity of S. of I. is used. 



451 H. H. — Destruction des sanves. 



Jour. Agr. Prat. (1899), T. II, p. 98. 



Gives as the best time for spraying the time when the first four 

 or five leaves are out and well opened. 



452 ( ). — (Eradication of Weeds by Spraying with 



Solutions of Metallic Salts.) 



Bui. Agr. (Brussels.) 1899, pp. 345, et suivantes. 



Plots of oats were treated with the following solutions : 



A. 4 kgo. sulphate of copper to go 1. water. 



B. 3 kgo. sulphate of copper to 91.5 1. water. 



C. 3 kgo. sulphate of iron to 20 1. water. 



Using the first solution the results were completely satisfac- 

 tory; using the two other solutions the results were not satis- 

 factory. 



In Limbourg a 4 per cent solution of S. of C. and a 12 per cent 

 S. of I. were efficacious. 



In the province of Namur experiments with oats led to 

 the following conclusions, namely: 



A. The most favorable time for the destruction of mustard 

 with saline solutions corresponds with the appearance of the fifth 

 or sixth leaves. 



B. That sulphate of copper is more active than the S. of I. From 

 the point of view of economy the S. of I. is to be recommended 

 over the S. of C. 



C The result of all the experiments is that a 20 per cent solu- 

 tion of S. of I. gave the best results. 



