Economic Comparison of Liquid Manure Transport and Land Application

摘要: A spreadsheet-based manure transport and land application decision tool, MANURE$HAUL, was developed to provide farmers, custom applicators, others involved with management a cost labor calculator for liquid systems using top-loading tank spreaders nurse tanks. The hauling capacity function of the machinery set selected, capacity, distance. Manure costs were spreader Representative 175-, 350-, 700-, 1,400-cow dairy farms compared evaluate time range sets, distances, nutrient values applied. Equipment ownership operating calculated agitation, pumping, transport, application, incorporation. ranged from 0.32¢/L hauled per year (1.18¢/gal) 175-cow 11400-L (3000-gal) an average distance 1.6 km (1 mile) broadcast tillage incorporation 0.50¢/L (1.91¢/gal) 1400-cow farm slurry injection 6.4 (4 two 34100-L (9000-gal) four trucks over-the-road transport. Two supplying tractor-drawn became more cost-effective than alone at about 4.8 (3 mile). Injection increased number days needed incorporation, but when included total field operations less 6% When high soil phosphorus (P) levels restricted rates crop P removal rates, credited value applied reduced by 45%. unincorporated constrained 60% injected build-up level. In each case nutrients exceeded