Peach Leaf-Curl. 



383 



Discussion of recommendations : 



I St. Why not spray in midwinter ? Midwinter spraying maj^ 

 be quite effective, but there is every reason to believe that the 

 April spraj^ng will be 

 better ; for if that is 

 near the time that the 

 buds are infected, the 

 spores will then be more 

 readil}" killed. If a 

 time when other work 

 is not pressing is of 

 first importance, spray 

 earlier. Why not use 

 copper sulfate solution? 

 It may be quite as ef- 

 ficient, but Bordeaux 

 adheres better and 

 would be more likely 

 to prevent infections 

 throughout a period. 



2d. Why ? Late in- 

 fections by spores from 

 the ground or from 

 neighboring fields may 

 thus be guarded 

 against. 



3d. This spraying 

 is to cover the leaves 

 with Bordeaux at 

 about the time the fun- 

 gus is fruiting, hoping 

 not onl}^ to prevent summer infections, but to cover places w^here 

 the spores may lodge in order to pass the winter. 



70, — A branch from a tree in row 3 sprayed 

 ' late with Bordeaux mixture. 



The Bordeaux Mixture. 



In making the first spraying, the all-important one, strong 

 Bordeaux mixture may be used ; and every twig should be so 

 well covered that the blue color appears as a distinct coating after 



