.4 2 



FREQUENCY OF PICKING (TIMES PER WEEK) 



Figure 5. Fixed and total returns per acre in relation to output per acre, 



1951 season. 



output with $.50 per hour labor charge is .$350, and with Sl.OO per hour 

 labor charge is $327, These correspond to 167 and 134 hours of labor 

 input respectively (see Figure 3). 



Marginal Cost Curves 



The marginal cost curves which show the additional costs of producing 

 one more dollar of output at each level of output are shown in Figure 6. 

 Curve I uses $.50 per hour labor charge and Curve II, $1.00. The marginal 

 cost curves rise rapidly after an output of $350 is passed. This is due to 



12 



