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Relationships Between Soil Nitrogen Availability Indices, Yield, and Nitrogen Accumulation of Wheat

^a Dep. of Soil Science, 51 Campus Drive, Univ. of Saskatchewan, Saskatoon, SK, Canada, S7N 5A8
^b Dep. of Water and Environment, Alterra, P.O. Box 47, 6700 AA Wageningen, the Netherlands
^c Dep. of Agronomy and Range Science, Univ. of California-Davis, Davis, CA 95616

View larger version (82K): [in a new window]   Fig. 1. Correlations between aboveground N accumulation in the crop and soil properties, elevation, yield, and N accumulation across the landscape.

View larger version (21K): [in a new window]   Fig. 2. Experimental and modeled crossvariograms of the soil N availability indices and aboveground N accumulation in the crop.