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Economic Feasibility of Variable-Rate Nitrogen Application Utilizing Site-Specific Management Zones

^a Dep. of Soil and Crop Sci., Colorado State Univ., Fort Collins, CO 80523
^b Dep. of Agric. and Resour. Econ., Colorado State Univ., Fort Collins, CO 80523

View larger version (40K): [in a new window]   Fig. 1. (A) The 18.5-ha furrow-irrigated study site (Site-Years I and II) and (B) the 58-ha center-pivot–irrigated study site (Site-Year III), respectively, showing management zones and their corresponding productivity potential. High productivity = dark gray, medium productivity = light gray, and low productivity = white.