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Footnotes - Annualized Beneficial NED Effects (Contains assumptions and methods of calculations) 1/ This composite of crops was selected to represent the changes resulting from the planning and application of resource management systems. 11 The estimated average units per acre were multiplied by the number of acres based on a composite evaluation. The Soil Conservation Service activities in the Well ton-Mohawk On-Farm Irrigation Improvement Program relate to 48,195 acres. This is estimated to be alfalfa 15,181 acres (31.5%), cotton 11,856 acres (24.6%), and wheat 21,158 acres (43.9%). Alfalfa, cotton and wheat were selected as representing the cropping pattern and acreage of this analysis. A 1986 Bureau of Reclamation crop report provided the base for projecting the composite acreage used in the calculations. The physical changes resulting from the planning and application of resource management systems were adequately documented for alfalfa, cotton and wheat as part of and during the conservation planning process. Conservation impacts information was limited in either the before or after condition for several crops. Therefore, these crops were grouped under either cotton or wheat. This grouping attempts to represent a similarity between amounts of irrigation water applied, irrigation labor used andlor the net benefits of yield changes following the application of on-farm conservation. ~/ The estimated units of production are multiplied by the current normalized prices for fiscal year 1987. The National Bulletin ~o. 200-7-4 of August 26, 1987 transmitted procedures to compute normalized prices received by farmers. National Bulletin No. 200-7-3, dated April 23, 1987 also contains references to the State of Arizona prices. The adjusted prices are: alfalfa hay - 582.83 per ton, cotton lint - 50.51 per pound, cotton seed - 572.49 per ton and wheat - 54.32 per Cwt. Prices were confirmed by telephone with SCS Western National Technical Center on September 17, 1987. ~/ The estimated variable harvest costs were obtained from the 1987 Arizona Field Crop Budgets for Yuma County which are available through the University of Arizona. ALFALFA HAY Likely yields from Table 13. The variable harvest costs for producing alfalfa hay are found on Table 9. Operating Costs Operation Times Machine Labor Materials Totals Swathing 9 x $ 30.30 $ 11.88 S S 42.18 Raking 9 x 6.21 4.14 10.35 Baling 9 x 18.00 7.65 24.32 49.97 Roadside 9 x 16.11 4.23 20.34 Total 9 x $ 70.62 $ 27.90 $ 24.32 5 122.84 The average variable harvest cost for alfalfa hay is estimated to be 515.36 per ton (5122.84/8 tons/acre or S15.36 per ton). -34-