Coal surface mining in northern Great Plains USA led to reclamation experiments with soil respreading. Respread soil depth\n(RSD) and runoff of water redistribution (WR) effects interacted in originalNorthDakota studies, complicating interpretations.We\ndetermined WR and soil depth/soil quality (SQ) effects on hillslope production patterns for sites with soil wedges (2%ââ?¬â??5% slope,\n50-m length) over sodic mine spoils. At Zap, cool-season forages crested wheatgrass (CWG: Agropyron cristatum) and Russian\nwildrye (Psathyrostachys juncea) generally decreased as RSD increased upslope. At Stanton, alfalfa (Medicago sativa), native grasses\n(Bouteloua spp.), and CWG responded to RSD, increasing 70% to midslope and decreasing further. A SQ index (SQI) based on\nsix indicator properties was highly correlated (
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