1254 IXSKCTICIDES, FUNGICIDES, AND WEED KILLERS. 



the small spot apjjears on the leaves and young shoots, and tlie second 

 fifteen to twenty days later. A better result is obtained by addmg a 

 little sugar or ammonium chloride to the bouillie. Smith recommends 

 in this case 1 H). of sugar or J, lb. of ammonium chloride to lo gallons 

 of water. 



S})h(2rella Fragaria, Sacc. (spots of the leaf of the strawberry). — 

 Garman advises to overcome this disease a bouillie bordelaise with 

 3-25 per cent of blue vitriol and 2 per cent of lime, used to spray 

 every fifteen days until it disappears. Weiss has shown that a 1 per 

 cent bouillie suffices when used as spray before flowering, and after 

 gathering the fruit. This bouillie is very adherent on the strawberries 

 so that it cannot be used during the formation of the fruit, which 

 could not be sold. 



CyUndrosporiiim Padi, Karst. (cherry and plum leaf blight). — 

 This disease which, in America, causes the leaves of plum-trees and 

 pear-trees to fall, is efl'ectively overcome by three sprayings with 

 bouillie bordelaise in July and August (Selby). According to Galloway 

 and Pammel the bouillie bordelaise is a specific remedy against this 

 disease. The best is a bouillie of 1-25 per cent of blue vitriol and 

 0-8 per cent of lime. According to Fairchild and Sorauer the trees 

 should be sprayed five times — -the first before the opening of the leaves, 

 the following with fifteen days' interval. It is essential that the 

 bouillie cover the two faces of the leaves. 



Spharella morifoUa, Passerini (CyUndrosporiiim Mori BerL), (mil- 

 dew of the leaves of the mulberry). — Bouillie bordelaise 5 per cent gives 

 excellent results (Caruso). 



Septoria. — Trials against these diseases show that houillie bordelaise, 

 judiciously applied, is an excellent method for overcoming them, 

 especially if the first spraying be applied preventively before the 

 opening of the young leaves, 



Septoria Tritici, Desm., and Septoria graminum, Desm. (nielle 

 des cereales). — Kruger steeped the spores of the pycnides for twenty to 

 forty hours in a 2 per cent bouillie bordelaise and found that they did 

 not germinate after this treatment. Galloway observed a diminution 

 in this disease in treating grain against rust by cupric preparations. 

 Septoria Bibis induces the premature fall of gooseberry leaves. 

 Septoria Bubi, Wert., produces }):ile spots bordered with red on 

 raspberry and blickberry leaves. Selby, Goft", and Pammel overcame 

 this fungi by spraying with bouillie bordelaise. May be overcome in 

 the same way : — 



Septoria Lycopersici, Speg. (spots of the tomato leaf). — Selby; 

 Halsted, and Earle. 



Septoria Petroselini, Desm. (pale spots of the parsley). — Duggar and 

 Bailey. 



Septoria Cerasina, Peck, (spots of the leaf of the plum-tree, cherry- 

 tree, apricot, and peach-tree in America). — With three sprayings there 

 is a marked but incomplete effect. S[)ots of the leaf of the chrysan- 

 themum in Italy by five to six sprayings, containing a little soap, 



Septoria nigerrima, Fuckel, and Septoria j^i'i'^cola, Desm. (white 

 spots bordered with brown on the pear-tree), — According to Sorauer 



