130 



The enumeration of sptcific fliseases is as lollows: 



i. Root diseases, affecting absorption of food materials — 



Crown gall (cause uncertain). On fruit trees, small fruits, known 



'""to occur; extent of injury not reported. 

 Root-rot (Fnngi not identified). On fruit trees; troublesome in 



orchards, principally in southern part. 

 Club-root (Myxomycetes, Plasmodiaphora Crassicae). On cab- 

 bages and other cruciferae. Distriliution not ]\:uown. Re- 

 ported from market gardening regions about larger cities. 



II. Stem diseases, affecting ascent of sap and transpiration — 



Fire-blight (Bacillus aniylovorous). On apples, pears and quinces 

 in all parts of the State. Very destructive and difficult to 

 control. 



Black-knot (Plowrightia morbosa). On plums and cherries. Com- 

 mon all ovei' State on plum trees. Cherries less injured by it. 



Black-rust (Puccinia graminis). On wheat, chiefly, but attacking 

 also other grains and grasses. Occurs everywhere. Extent of 

 injury In any particular season usually dependent upon 

 weather. 



Black-rot (Pseudomonas compestrls). On cabbage, cauliflower and 

 related plants. Affects leaves also, and finally entire head. 

 Very destructive in some localities. 



III. Wood diseases, affecting absorption and transfer of w'ator — 



Wilt (Bacillus tracheiphilus). On melons and cucumbers. A com- 

 mon and injurious trouble affecting melons, especially in 

 southern countries. Few reports concerning cucumbers ; this 

 crop of much less importance. 



Blight (Bacillus salanacearnnO. On tomatoes. Few local reports 

 of this. May be due to other causes than bacteria. 



IV. Bark diseases, affecting transpiration chiefly — 



Canker (Spaerapsis malorum. Bacillus amylovorus, Glomerella 

 rufomaculaus). On apple trees. Cankers may be due to the 

 parasites mentioned or others. Occurrence of any except the 

 first mentioned has not been verified. 



Asparagus rust (Puccinia asparagi). On asparagus. Bad locally 



in northwestern portion of State. 



Authracuose (Gleosporium venetum). On blackberries and 

 I'aspberries. Often very destructix'e. 



