100 



IDLE 

 CROP- 

 LAND 



CLOVER SEEDINGS 



ALFALFA SEEDINGS 



-5 YEAR GRASS 



I Medium 

 I fertilization 



Medium 

 fertilization 



GRASS 



Medium 

 fertilization 



ALFALFA^ GRASS 



CORN SILAGE 



.20 .25 .30 .35 .40 



RATIO OF COWS TO CROPLAND 



.45 



.50 



.55 



Figure 2. Optimum cropping program with specified ratios of cows to crop- 

 land and no market for hay. 



16 



