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MINNESOTA STATE HORTICULTURAL SOCIETY. 



the lime and sulphur spray has also acted as an effective fungicide 

 in the prevention of fungous diseases. 



One year ago this past summer my grape crop was more than 

 half ruined with mildew and scab. I never had practiced spray- 

 ing my grape vines, but last spring I decided to know for myself 

 whether any benefit could be had from spraying the vineyard. Ac- 

 cordingly just before the buds opened I applied the Bordeaux mix- 

 ture in the liquid form and followed it with the dust process, at 

 three different intervals of from ten to twelve days apart. These 

 latter applications were made on dewy or foggy mornings, usually 



C. H. True, Sec'y N. E. Iowa Horticultural Society. 



before breakfast and while the foliage and vines were well satur- 

 ated with moisture. As to results : During the present season 

 there was a slight trace of mildew on Moore's Diamond only; all 

 other varieties seemed wholly free from disease of any nature, and 

 this past fall I harvested the largest crop of grapes from those vines 

 the vineyard has ever produced, the yield from less than 500 vines 

 being over 16,000 pounds, netting at a low price for the fruit over 

 sixty cents per vine. Possibly the mildew and scab might not have 

 appeared to the extent that it did the previous year without the 



