30 



EXPERIMENT STATION BULLETIN 



MA N HOURS | 



.060 



.050 



.040 



.030 



.020 



.010 



LARGE MEDIUM. SMALL 



Figure 19. — Average calyx man hours per bushel expected yield 



sized, specialized fruit farms. The spray machine will last about as long 

 if an additional spray is applied, and the men and horses or tractors may 

 not have other productive alternatives at this period. 



Thus, on farms that have the equipment to apply spray efficiently, 

 the additional cost of a marginal spray is very small. The decision as to 

 the application of a spray should be based on a comparison of marginal 

 returns expected in better quality of the fruit and the marginal costs. On 

 some farms the extra cash costs would be largely spray materials. 



On this basis, the orchardist with available labor and equipment 

 could afford to put on the additional spray if he estimated it would tend 



2.6 

 2.4 

 2.2 



2.0 

 1.8 

 1.6 

 1.4 

 1.2 

 1.0 

 .8 

 .6 

 .4 

 .2 



C ENTS 



INDIVIDUAL FARMS 



Figure 20. — Distribution of farms according to cost of calyx spray 

 materials per box of apples (normal expected yield assumed) 



