i6 



The Canadian Horticulturist. 



PROFIT IN SPRAYING. 



HE fact that one well known plum grower at 

 Winona, Mr. George Cline, ha? been practising 

 spraying for ten years past ; that he treats his large 

 plum orchard with four or five applications every 

 season ; that he has so convinced himself of its 

 benefits that he will not omit it for a single season, 

 and • has purchased a machine, for utilizing the 

 power of the wheels to do the pumping, at a cost 

 of nearly one hundred dollars, and that his 

 orchard yields annually large crops of plums, is 

 surely sufficient evidence of the benefit of spraying 



with Paris gieen to destroy the curculio, and to lead all plum raisers to try it for 



themselves. 



If additional testimony is needed we may quote from the experiments of 



W. J. Green, Horticulturist Ohio Experiment Station, bulletin i8, in which he 



gives the following summary of results : 



(i) The profit to be derived from spraying orchards often exceeds $20 



per acre, and for vineyards is much more. The fruit crop of the State would be 



enhanced in value by several million dollars annually if the practice were 



generally followed. 



(2) Combined fungicides and insecticides are recommended whenever 

 applicable, because of a saving of time ; a less liability of injuring foliage ; 

 greater efficiency in some cases, and as a precautionary measure in others. 



(3) Dilute Bordeaux mixture, copper-arsenic solution and ammoniacal 

 solution of copper carbonate are the most useful fungicides for the treatment of 

 the diseases herein mentioned, and the first has the widest range of usefulness 

 of all. 



(4) Early spraying is the key to success in the use of fungicides. 



(5) For the plum curculio and shot hole fungus use Bordeaux mixture and 

 Paris green combined, making three or four applications. 



It is not known that this treatment will prevent the black knot, but cutting 

 away and burning the diseased branches will accomplish the result. 



(6) Scabby apples rot much earlier than those free from scab, and spray- 

 ing with fungicides will save at least 50 per cent, of this loss. 



(7) Spraying with fungicides in the season of 1892 prevented much of the 

 early dropping of apples, which is usually attributed to wet weather. 



(8) For apples, two applications of Bordeaux mixture before blooming are 

 advised, and two of the same mixture after blooming, with Paris green added. 



