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Spatial Growth and Nitrogen Uptake Variability of Corn at Two Nitrogen Levels

Dep. of Crop and Soil Sci., Cornell Univ., Ithaca, NY 14850

View larger version (53K): [in a new window]   Fig. 1. Kriged interpolations, using ArcGIS, of volumetric water content in the upper 30-cm soil depth in 2000 and 2001 at the R1 stage at Onondaga 1 (a, b), at the R3 stage at Seneca 1 (c, d), and at the R1 stage at Seneca 3 (e, f) sites.

View larger version (57K): [in a new window]   Fig. 2. Corn yields in 2000 and 2001 using ArcView at Onondaga 1 (a, b), Seneca 1 (c, d), and Seneca 3 (e, f) sites.

View larger version (56K): [in a new window]   Fig. 3. Kriged interpolations, using ArcGIS, of N uptake at physiological maturity in the low and high N treatments at the Onondaga 1 site in 2000 (a, b) and the Seneca 3 site in 2001 (c, d).

View larger version (74K): [in a new window]   Fig. 4. Kriged interpolations, using ArcGIS, of residual soil NO3–N concentrations in the upper 30-cm soil depth in the low and high N treatments at the Onondaga 1 site in 2000 (a, b) and 2001 (c, d).

View larger version (44K): [in a new window]   Fig. 5. Kriged interpolations, using ArcGIS, of residual soil NO3–N concentrations in the upper 30-cm soil depth in the low and high N treatments taken immediately after harvest in 2001 at the Seneca 1 (a, b) and Seneca 3 (c, d) sites.