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Natural Resources and Conservation
School of Natural Resources: Faculty Publications
Agricultural systems; Classified management maps; Statistical analyses; Geographic information systems; Soil electrical conductivity
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Full-Text Articles in Physical Sciences and Mathematics
Apparent Soil Electrical Conductivity: Applications For Designing And Evaluating Field-Scale Experiments, C. K. Johnson, Kent M. Eskridge, D. L. Corwin
Apparent Soil Electrical Conductivity: Applications For Designing And Evaluating Field-Scale Experiments, C. K. Johnson, Kent M. Eskridge, D. L. Corwin
School of Natural Resources: Faculty Publications
On-farm field-scale research has become increasingly common with the advent of new technologies. While promoting a realistic systems perspective, field-scale experiments do not lend themselves to the traditional design concepts of replication and blocking. Previously, a farm-scale dryland experiment in northeastern Colorado was conducted to evaluate apparent electrical conductivity (ECa) classification (within-field blocking) as a basis for estimating plot-scale experimental error. Comparison of meansquare (MS) errors for several soil properties and surface residue mass measured at this site, with those from a nearby plot-scale experiment, revealed that ECa-classified within-field variance approximates plot-scale experimental error. In the …