REPORT OP COMMITTEE ON PUBLICATION 



117 



shoots are from 8 to 10 inches long; the second, just before the flower buds 

 open; the third immediately after the blossoms fall; the fourth ten days to 

 two weeks after the third. The addition of two pounds of resin fish-oil soap 

 to fifty gallons of the spray mixture in the last two applications is desirable 

 in order to increase the adhesiveness of the fungicide. 



Fig. 4. Untreated vine. 



POWDERY MILDEW OF GRAPES AND ITS CONTROL IN THE 



UNITED STATES. 



By Prof. DONALD REDDICK, Cornell Univ., Ithaca, N. Y. and 

 F. E. GLADWIX, Fredonia, N. Y. 



Abstract read by Prof. Frederic T. Bioletti. 



By far the largest continuous area of land given to the culture of grapes 

 in Eastern United States is that lying in a narrow belt along the southern 

 shore of Lake Erie. This belt is often referred to by residents of New York 

 and others as the Chautauqua grape belt, owing to the fact that some 30,000 

 acres of a possible 50,000 are located in Chautauqua County, New York. The 

 records and observations that follow have been made at a vineyard labora- 

 tory located near Fredonia, New York. They cover a period of five years 

 and have been made possible in part by a special legislative commission to 



