:> 



y 



35 



The Fruit Grower's Association isHued the following 

 circular to each of its members in April, 1891, in regard to 

 the disease. 



' CIRCULAR. ' 



The following, from the report of Committee on Fungi- 

 cides, is published by order of the Fruit Grower's Association 

 for the information of its members: , ,/ , ' 



After having carefully examined the results of numerous 

 experiments, we find that the best authorities are of the 

 opinion that the drainage from the apple scab (Fusicladium 

 Dentriticium) may be almost entirely prevented at a slight 

 cost, by spraying the trees, beginning in May before the 

 trees come into leaf, again after the blossoms have fallen 

 and the apples are forming, and continuing at intervals of 

 two or three weeks until the end of July, with a solution of 

 ammoniacal copper carbonate, at strength not to exceed 

 1^ oz. of the carbonate and one quart of ammonia to one 

 hundred gallons of water. These materials may be had 

 prepared (at Geo. V. Rand's, Wolfville,) at a cost of about 

 60 cents for enough to make one hundred gallons. From 

 actual experiments with this solution upon Northern Spy 

 trees at the Agricultural College, Wisconsin, the following 

 results were obtained from the trees sprayed : 



Fruit sprayed : 



First quality (free from scab) 7 5 "02 per cent. 



Second quality 23*35 " 



Third quality 163 " 



With treo^ of the same variety unsprayed, had of, 



First quality 23.14 per cent. 



Second quality 54'i4 " 



Third quality 2271 " 



We would call the attention of fruit growers to the 

 importance of using proper pumps and nozzles, particularly 

 the latter. It seems evident that much of the disappoini- 

 ment and damage done in some instances by the use of 

 arsenites may " directly traced to the use of nozzles that 

 allowed the so to fall in large drops instead of a fine 



spray or mist, the»eby seriously injuring the foliage, besides 

 ■ using a much larger quantity of the solution than is 

 necessary. 



If the nozzle is elevated to a level with the upper 

 branches, either by a tube or length of hose attached to a 

 light pole, the spraying is done more effectually. 



■ 



