Apple Orchard Survey of Niagara County. 



305 



XIII. Spraying in 1905 



HOW SPRAYED. 



Seldom or never sprayed 



Usually sprayed, but not in 1905 



Spra} ed once 



Sprayed twice 



Sprayed three times 



Sprayed four times 



Sprayed five times 



Total unsprayed 



Total sprayed 



XIV. Kinds of Sprays used in 1905 



TREATMENT. 



Paris green and Bordeaux mixture. . . . 



Arsenic and Bordeaux mixture 



Bordeaux mixture only 



Prepared mixtures 



Bordeaux mixture and lime and sulfur. 



Lime and sulfur alone 



Scalecide 



Crude oil 



Kerosene emulsion 



Paris green only 



HoTV spraying affects yields and incomes. — The best answer to this 

 question may be obtained by referring to the tables on this subject. 

 Two computations were made on this point, one including all orchards 

 within the survey and the other only well-cared-for orchards. The 

 first table shows that the greatest yield follows from three sprayings, 

 although there was a small gain in average income in favor of four 

 sprayings. It is interesting as well as instructive to note the rising 

 scale of average incomes in passing-from the unsprayed group to that 

 of four sprayings. This scale holds good for both tables. 



XV. Spraying and Yield and Income per Acre, 1905. 



Inclxided 



All Orchards 



HOW SPRAYED. 



Unsprayed 



Sprayed once 



Sprayed twice 



Sprayed three times 

 Sprayed four times . 



