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MINNESOTA STATE HORTICULTURAL SOCIETY. 



BLIGHT IN THE APPLE ORCHARD, AND HOW TO 

 REDUCE ITTO A MINIMUM. 



DEWAIN COOK, JEFFERS. 



We are told by professional men that blight is caused by a germ 

 so small that one-half million of them can exist in one drop of water ; 

 they also tell us that the only effective remedy for blight is to cut 

 out all of the diseased wood ; nevertheless, I believe that by sanitary 

 orchard management blight may be materially reduced. 



The blight disease has points in common with some of the 

 diseases of the human family, yellow fever, for instance, in that it 

 requires food, heat and moisture for its existence and is also de- 

 pendent upon certain insects for its spread. 



Mr. Dewain Cook, Wiudom, Minn. 



Prof. M. B. Waite, of the U. S. Department of Agriculture, 

 says (see Mo. Hort. report of 1902, page 400), that bees do carry 

 blight extensively and, with other insects, are the principal or almost 

 the only agency of distribution of the germs. He also further 

 states that owing to the sticky substance of the germ it cannot be 

 carried by the wind. 



Dr. T. J. Burrill, of the University of Illinois, says (see 111. 

 Hort. report 1901, page 443), referring to the blight, that it is 



