Soil geomorphic, hydrologic, and sedimentologic relationships and evaluation of soil survey data for a Mollisol catena on the Des Moines Lobe, central Iowa

Comparison of alternative farming systems. I. Infiltration techniques

“…A finer-grained survey of this site done concurrently with this study by a soil morphologist (Steinwand, 1992) revealed that the map unit called "Canisteo" is primarily Webster. The soils are very similar, differing only in that Canisteo has free calcium carbonate at the surface.…”

The Role of Water Stress in Creating Spatial Yield Variability in Soybeans

“…The site is typical of lowrelief swell and swale topography characteristic of broad areas of the Des Moines lobe surface (Steinwand and Fenton, 1995). A detailed soil map of the field (Steinwand, 1992) was obtained from the National Soil Tilth Laboratory (NSTL) in Ames, IA. Nine major soil classes were identified and distributed across the field (Table 1 ).…”

“…Properties for the predominant soiltype in each grid was used to represent soil properties in each grid. Steinwand (1992).…”

Knowledge and decision support for variable rate application of materials in prescription farming

“…Soil nutrient data was available fi'om a portion of the north field for one of the five years. In the south field, a detailed soil survey that provided a more precise characterization of soil series within the field, than was available from the county soil survey, had been prepared by Steinwand (1992). Changes in elevation in the north field were generally gradual, and soil characteristics appeared to be relatively uniform.…”