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USDA Crop Reporting Districts

    The Iowa Community Indicators Program (ICIP) provides resources for understanding regional economic and demographic change. Our data and analysis services help inform local decision-making, policy development, and strategic planning processes. ICIP continues Iowa State University's long history of socio-economic data service provision.

    Data from: Soil organic carbon and isotope composition response to topography and erosion in Iowa

      The dataset includes topographic information, soil properties, and 137Cs levels collected from a 15 ha cropland under soybean/maize (C3/C4) rotation in June 2002. The cropland is located in the central-western part of the Walnut Creek watershed, Story County, Iowa. 128 sampling locations were collected and three soil samples were obtained using a 3.2 cm-diameter push probe from the 0 to 30 cm soil layer within a 1 m × 1 m quadrat at each sampling location. Deeper soil samples were collected from 30 to 50 cm layers in locations where sediment deposition was observed. The three samples from each sampling location were mixed and analyzed to determine soil properties, SOC content and its carbon (C) isotope composition (C12 to C13 ratio), and 137Cs levels. For landscape topography of each sampling location, topographic metrics were derived from a digital elevation mode using LiDAR (Light Detection and Ranging) data. These data are useful in investigating the fate of eroded SOC in croplands and its responses to landscape topography.

      Feedstock Readiness Level (FSRL) evaluation: Triticum aestivum (wheat straw), Alcohol-to-Jet, Central East, May 2017

        Feedstock readiness level evaluations are performed for a specific feedstock-conversion process combination and for a particular region. FSRL evaluations complement evaluations of Fuel Readiness Level (FRL) and environmental progress. The data from this evaluation, compiled in May 2017, assesses the maturity of *Triticum aestivum* (wheat straw), as a feedstock for the Alcohol-to-Jet conversion process in the United States Central East region.

        Feedstock Readiness Level (FSRL) evaluation: Herbaceous perennial grasses, Alcohol-to-Jet, Central East, Mar. 2017

          Feedstock readiness level evaluations are performed for a specific feedstock-conversion process combination and for a particular region. FSRL evaluations complement evaluations of Fuel Readiness Level (FRL) and environmental progress. The data from this evaluation, compiled in March 2017, assesses the maturity of *Panicum virgatum*, *Andropogon gerardii* and *Sorghastrum nutans*, as a feedstock for the Alcohol-to-Jet conversion process in the United States Central East region.

          Feedstock Readiness Level (FSRL) evaluation: Zea mays (corn stover), Alcohol-to-Jet, Central East, Mar. 2017

            Feedstock readiness level evaluations are performed for a specific feedstock-conversion process combination and for a particular region. FSRL evaluations complement evaluations of Fuel Readiness Level (FRL) and environmental progress. The data from this evaluation, compiled in March 2017, assesses the maturity of *Zea mays* (corn stover) as a feedstock for the Alcohol-to-Jet conversion process in the United States Central East region.

            Feedstock Readiness Level (FSRL) evaluation: Andropogon gerardii (big bluestem), Alcohol-to-Jet, Central East, Mar. 2017

              Feedstock readiness level evaluations are performed for a specific feedstock-conversion process combination and for a particular region. FSRL evaluations complement evaluations of Fuel Readiness Level (FRL) and environmental progress. The data from this evaluation, compiled in March 2017, assesses the maturity of *Andropogon gerardii* (big bluestem) as a feedstock for the Alcohol-to-Jet conversion process in the United States Central East region.

              Feedstock Readiness Level (FSRL) evaluation: Sorghum bicolor (sweet sorghum), Alcohol-to-Jet, Central East, Mar. 2017

                Feedstock readiness level evaluations are performed for a specific feedstock-conversion process combination and for a particular region. FSRL evaluations complement evaluations of Fuel Readiness Level (FRL) and environmental progress. The data from this evaluation, compiled in March 2017, assesses the maturity of Sorghum bicolor (sweet sorghum) as a feedstock for the Alcohol-to-Jet conversion process in the United States Central East region.

                Feedstock Readiness Level (FSRL) evaluation: Panicum virgatum (switchgrass), Alcohol-to-Jet, Central East, Mar. 2017

                  Feedstock readiness level evaluations are performed for a specific feedstock-conversion process combination and for a particular region. FSRL evaluations complement evaluations of Fuel Readiness Level (FRL) and environmental progress. The data from this evaluation, compiled in March 2017, assesses the maturity of *Panicum virgatum* (switchgrass), as a feedstock for the Alcohol-to-Jet conversion process in the United States Central East region.