BULLETIN 229. 



Relation of spraying to yields and prices. Table 12 shows that the 

 sprayed orchards give a much higher yield and income per acre than the 

 unsprayed. The difference in income is due to the larger yield, larger 

 percentage of the crop barreled and higher price per barrel. It will be 

 seen that those sprayed three times gave 31 per cent larger yield and 51 

 per cent larger income than those not sprayed. 



TABLE 12. 

 Spraying and yield and income per acre, 1904. 



TABLE 13. 

 Spraying and yield and income per acre, 1904. Orchards all well cared for. 



A part of the difference in yield and income is due to other factors. 

 The unsprayed orchards are likely to be somewhat neglected in other 

 respects. To eliminate this factor, another classification was made after 

 all neglected orchards were thrown out. 



Table 13 includes only those orchards that are fairly well cared for. 

 They are not badly diseased or damaged from any cause. This shows 

 a marked difference in the percentage of the crop barreled and in average 

 yield and income; the average income per acre being: unsprayed, $103; 

 sprayed once, $139; sprayed twice, $143; sprayed three times, $184. 

 Allowing for the cost of the extra barrels required, for the cost of spray- 



