78 DENAIFFE & SIRODOT.— (Destruction of Wild Rad- 

 ish and Wild Mustard.) LAvoine, pp. 730-733. 



10-12 per cent solution S. of I. employed when plants are small; 

 15 Per cent solution when plants are large. Applied at the rate 

 ot 12 Hktl. per Hect. Two reasons for using S. of I., low cost 

 and the favorable action on the growth of oats. 



79 DESBOIS, ( ).— In Bernard's La Calcaire sa Determina- 

 tion et son Role dans les Terres arables, p. 219. 



Also Revue horticole, 1888. 



A bed of Marechal-Niel roses being chloritic was condemned. 

 Treated with S. of I., 100 grams to 10 Litres, the solution being 

 applied to the roots. Treated three times at intervals of eight 

 days. The bushes produced five or six roses of ochreous color. 

 The vegetation was vigorous. 



In 1889 the bushes produced 300 beautiful roses of the usual 

 color. 



Physico-chemical analysis of the soil gave : 



Silica 67.3% 



Calcareous 16.0% 



Argillaceous and Organic Matters 16.7% 



80 DESTREMX, L. — Le sulfate de fer en agriculture. 



lour. Agr. Prat. 1888, No. 47, T. II, p. 747. 



Plays a great role in vineyards. 



Specific against Chlorosis, Anthracnose. 



Successfully used to eradicate moss in pastures. Sulphate of Iron 

 for roots with Sulphate of Copper for leaves makes the ideal 

 combination. 



81 DETMER, W. — Die natiirlichen Humus korpen des Bodens 

 und ihre landwirthschaftliche Bedeutung. 



Landw. Vers. Bd., XIV, S. 292. 



Reduction of ferric to ferrous compounds in sour humus soils. 



82 DEVARDA, A. — Ein neues Geheimmittel gegen den Per- 

 onospora, "La Vitale." 



Die Weinlaube, 31 Dec. (1899). 



Centbl. Agr. Chem. Bd., XXXI, S. 648. 



Compound composed of the Sulphates of Iron, Copper, Potash, 

 Soda, with Carbonates of Lime and Soda, with the addition of a 

 tarry substance. 



