Appendix table IV 9. Marginal value products for selected resources with high 

 quality cows, $6.00 price of milk, various ratios of cows to cropland 

 and with and w^ithout sales of hay. 



Item 



Ratio of cows to cropland 



.10 



.15 



.20 



.25 



.30 



.35 



.40 



.45 



Hay sales at $27.00 per ton 



Hay sales prohibited 



.50 



Marginal rate of 

 substitution of 

 cows for cropland 



-47.4 —37.1 —35.7 — 4.9 —3.2 —0.15 



83 



