ASCOM \VKTKS 



189 



FIG. 69. BROWN ROT OF PLUM: MDMI.IA STAGE 



generally to the fact that the old mummied fruits remaining <>n 

 the twigs in large numbers serve to cause a very general infection 

 at the time of blossoming. The twigs are also susceptible, but it has 

 been quite definitely shown that infection of the twigs results only 



