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Wheat Nitrogen Use Efficiency in a Bed Planting System in Northwest Mexico

^a CIMMYT, A.P. 6-641, Mexico D.F. 06600, Mexico
^b Univ. of Nebraska–Lincoln, 225 Keim Hall, Lincoln, NE 68583-0949 USA

View larger version (29K): [in a new window]   Fig. 1 Wheat grain yield response to (a) N supply and (b) total N uptake on basal N fertilizer rates fitted to the model Y = A/[1 + exp(b - cN)], with N application at the 1st node stage for each tillage–straw treatment

View larger version (22K): [in a new window]   Fig. 2 Response of total N uptake to (a) basal N fertilizer fitted to the model Y = A/[1 + exp(b - cN)]; and to (b) N application at the 1st node stage for each tillage–straw treatment