28 HATCH EXPERIMENT STATION. [Jan. 



Ajople Scab [FHsidadium dendriticum.) . 

 Both early and late apples were badly affected by scab 

 during the year, except on high ground. 



Cucumber Wilt. 

 This bacterial disease was more prevalent than ever before 

 in large cucumber fields, and is evidently on the increase, 

 though no great damage resulted this year. 



Sweet Pea Troubles. 

 The cool, moist summer proved very favorable to the 

 growth of this plant, and much less trouble than for several 

 years was experienced by large growers. The "shelling" 

 of the buds and blossoms, brought on by close, muggy 

 weather, occurred somewhat ; but the blight of the vines, 

 so common and destructive of late, appeared very little this 

 season. 



Aster Diseases. 



The ' ' yellow " disease of this plant Avas noticeably less 

 abundant than usual this year, its prevalence being evi- 

 dently influenced by the character of the season. The wilt 

 or stem rot proved very destructive in many plants started 

 in the greenhouse, while those grown entirely out of doors 

 were comparatively free from its attack. 



Potato Blight {Phyto'plitliora infestans) . 

 This disease came on somewhat later than usual, being 

 retarded by cool weather early in August. It soon became 

 prevalent, however, and rotting of the tubers was unusually 

 severe, the crop being greatly diminished. 



Cucumber and Melon Diseases. 

 These plants suffered greatly during the season from a 

 variety of causes, chief among which was the downy mildew 

 (Plasmoj)ara cubensis) , the unusual prevalence of which is 

 described more fully elsewhere in this report. The Altei^- 

 naria disease and anthracnose were also common. Musk- 

 melons were a total failure everywhere, and cucumbers were 



