SPRAYING 



257 



Results of spraying. The following tables are based on figures 

 obtained by Cornell University, New York, as to the yield and 

 income of both sprayed and unsprayed apple orchards. These 

 figures are the result of apple-orchard surveys in the state. 



Two computations were made on how spraying affects yields 

 and incomes. One included all orchards within the survey, and the 

 other only well-cared-for orchards. By studying the first table, it 

 is evident that the greatest yield follows from the three sprayings, 

 although there is a small gain in the average income in favor of 

 four sprayings. It is very instructive to note the rising scale of 

 average incomes, beginning at the unsprayed group and passing 

 from that up to the group sprayed four times. In both tables this 

 scale holds sood. 



SPRAYING, YIELD, AND INCOME PER ACRE (ORCHARDS 

 ALL WELL CARED EOR) 



It is interesting as well as instructive to compare the average 

 income from the unsprayed crop with that from crops sprayed 

 four times. 



Two additional tables are given on page 258 showing that the 

 orchards that were sprayed gave a much larger income and yield per 

 acre than those not sprayed ; these tables are worthy of consideration. 



