beef produced from calves after crediting the value of culled cows sold was $97.33 per acre on Program 1, $93.12 on Program 2, and $126.33 on Program 3. Net returns per acre varied from $35.71 on Program 1 to a low of $29.62 on Program 3. The data are summarized in Table 20 and are expressed on the basis of cost per acre, cost per cow, and gross cost per hun- dredweight of beef sold from calves and culled cows. Total pas- ture cost per acre varied from $28.57 on Program 2 to $48.53 Table 20.-Cost per Acre, Cost per Cow and Gross Cost per Hundred- weight of Beef Sold from Calves and Culled Cows. Item Fertilizer and lime" Pasture maintenance Cost of irrigation Investment charge Total pasture costs Supplemental feeds and minerals Other costs for cows Total costs Fertilizer and lime" Pasture maintenance Cost of irrigation Investment charge Total pasture costs Supplemental feeds and minerals Other costs for cows Total costs Fertilizer and lime" Pasture maintenance Cost of irrigation Investment charge Total pasture costs Supplemental feeds and minerals Other costs for cows Total costs $ 9.66 1.97 17.36 $ 28.99 $ 22.83 72.04 $123.86 $ 13.04 2.66 23.44 $ 39.14 $ 30.82 97.25 $167.21 Program Number 2 Cost per acre $ 9.66 1.55 17.36 $ 28.57 $ 21.66 68.01 $118.24 Cost per cow $ 13.82 2.21 24.82 $ 40.85 $ 30.97 97.25 $169.07 Gross cost per hundredweight $ 2.26 $ 2.42 .46 .39 4.05 4.35 $ 6.77 $ 7.16 $ 5.34 16.83 $ 28.94 $ 5.43 17.04 $ 29.63 3 $ 11.90 1.45 17.82 17.36 $ 48.53 $ 28.50 77.80 $154.83 $ 14.88 1.81 22.27 21.70 $ 60.66 $ 35.62 97.25 $193.53 of beef sold' $ 2.51 .31 3.75 3.65 $ 10.22 $ 6.00 16.38 $ 32.60 "Covers cost of spreading on pastures. bBased on pounds of beef sold from calves and culled cows.