GRAPE ROT 



279 



with the exercise of ordinary intelligence and care can be 

 readily stamped out when it occurs, as but comparatively 

 few vines have to be dealt with in any one locality. Since 



Fig. 74. Gloeosporium ampelophagnm. i, appearance 

 of the disease on the leaves, stem, and tendrils of the vine ; 

 2, diseased grapes ; 3, section through a fruit pustule formed 

 on a young grape, x 300 ; 4, conidia, X4oo. 



1 88 1 it has also caused considerable anxiety and loss to 

 American viticulturalists, having in all probability been 

 imported to that country from Europe. 



