STATE HORTICULTURAL SOCIETY. 209 



Prof. Seymour. No, sir; I shall have something to say about blight 

 later. 



Mr. Pearce. I would like to inquire in regard to the different varie- 

 ties that it affects, — is it more extensive on one variety than another? 



Prof. Seymour. It is said to be. I am not a cultivator myself, and 

 €annot speak from experience; but Mr. Earle has observed that very 

 carefully, and if you will read his papers I think you will find some 

 reference to that matter. I think j'ou will find them in the reports 

 of the Mississippi Valley Horticultural Society. 



Mr. Fuller. In regard to that, I would say that I have raised about 

 fifteen kinds of strawberries. I find that the Jersey Queen is most 

 affected. I have never noticed it on the Wilsons, Crescent or Green 

 Prolific. On the Jersey Queen it spread over a distance of about four 

 square rods. 



Mr. Harris. I found it on the Charles Downing, but it was worse 

 €n the Manchester than upon any other variety. I would like to ask 

 Prof. Seymour if the application of sulphur would be effectual in 

 destroying the fungi. 



Prof. Seymour. Very likely, I don't know as that has been tried, 

 but I should think it might be effectual. 



GRAPE DISEASES. 



There are several fungi affecting the grape that are known as grape 

 rot, and the subject is a very large one; here are eighteen fungi affect- 

 ing the grape berry. In this country probably more than one are 

 called Black Rot. One of these is Phoma uvaecola, B & C. It causes 

 the berries to dry up and fall off. Spore cases occur in black patches 

 and contain a great many minute spores. The other one which has 

 been called Black Rot has instead of spore cases, short threads in 

 bunches that stand out on the leaf or bear the spores. 



The American grape Mildew grows on the berries, but we find it 

 oftener on the leaves. Brown spots, discolored by the action of the 

 fungus, appear on the upper surface of the leaves. Opposite these on 

 the under surface are patches of white; under the microscope, these 

 are seen to be branching threads bearing a spore at the top of each 

 branch. Within the leaf the fungus grows and special branches entej- 

 the cell cavities to suck up nourishment. 



Now, these spores have a peculiar way of germinating. The}* live 

 only a few days after they are matured. One may expect to have a 

 new crop of spores every morning and sometimes a new crop is pro- 

 duced several times a day. As soon as they mature they fall off in a 

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