260 The Spraying of Plants. 



value in treating young, dormant trees before setting. During 

 summer these insects multiply very rapidly, and all treatments 

 should be made early in the season, and very thoroughly. If 

 this is not done, bisulphide of carbon may prove effective, 

 although the remedy does not yet appear to have been used for 

 this purpose. 



APRICOT. 

 FUNGOUS DISEASES. 



Leaf Rust. See under PLUM. 



INSECT ENEMIES. 

 Curculio. See under PLUM. 



ASPARAGUS. 



Asparagus Beetle (Crioceris Aspamc/i, Linn.). Description. 

 In many localities asparagus is seriously injured by a small, 

 dark, metallic-blue beetle, which is also marked with yellow 

 and red. It passes the winter as a beetle, and lays its eggs on 

 the young asparagus shoots in spring. There are two or three 

 broods. 



Treatment. The removal of affected parts and the destruc- 

 tion of the eggs will assist in suppressing the pest. Hellebore, 

 mixed with flour, 1 part to 10, has been recommended as being- 

 effective against the first brood of larvae, and it is probable 

 that the arsenite would prove valuable if applied after market- 

 ing has ceased. 



ASTER. 



FUNGOUS DISEASES. 



Leaf Rust (Coleosporium Sonchi-arvensis, Lev.). Description. 

 The fungus appears to attack the leaves mostly from the under 

 side; here it produces orange-colored pustules and eventually 

 causes the death of the diseased leaves. 



Treatment. Spray the plants early in the season with a clear 

 fungicide, repeating the applications at intervals of two to four 

 weeks. Care should be exercised to reach the under surface of 

 the leaves. 



