SECTION XXXIX. SOME DISEASES OF 

 FRUITS 



ONE day a brown spot may appear on a fruit, and the 

 next the whole fruit may be browned and decayed. Mean- 

 time there may appear on the surface numerous gray 

 tufts of the mold-like fungus spores (Fig. 156). These 

 light spores are carried by 

 wind and insects to adja- 

 cent healthy fruits or even 

 to fruits of distant trees. 



Brown-rot. The spores 

 spread the disease, and 

 during a week of sultry 

 weather the peach crop 

 may be ruined by this dis- 

 ease, called brown-rot. 



With age a diseased fruit 

 shrivels and becomes what 

 is termed a " mummy." 

 These mummies hang on 

 the tree and there the fungus remains until the next season, 

 ready then to start a new outbreak of the disease. In con- 

 trolling this malady, therefore, first remove and destroy or 

 cover up by plowing all mummied fruits. Then spray the 

 trees carefully with Bordeaux mixture before the buds open, 

 to kill all germs. Finally, spray during the growing season. 



229 



After Ga. Agr. Expt. Station 



FIG. 156. BROWN-ROT ON A PEACH 



