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Spatial Variability of Soybean Quality Data as a Function of Field Topography

II. A Proposed Technique for Calculating the Size of the Area for Differential Soybean Harvest

Dep. of Crop Sciences, 1102 S. Goodwin Ave., Univ. of Illinois, Urbana, IL 61801

View larger version (21K): [in a new window]   Fig. 1. Examples of (a) an experimental cross-correlogram and cross-correlogram significance limit (P = 0.05) along with cross-correlogram and cross-correlogram significance models, and (b) cross-correlogram models with effective correlation distance, D. Shaded area represents the amount of significant correlation between either protein or oil concentration and elevation existing over the distance a.

View larger version (19K): [in a new window]   Fig. 2. Experimental cross-correlograms and cross-correlogram significance limits (P = 0.05) along with cross-correlogram and cross-correlogram significance models for (a) protein and elevation data from the DL98 field, (b) protein and elevation data from the WL198 field, (c) protein and elevation data from the KN99 field, and (d) oil and elevation data from the WL299 field.