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Iowa State University

Agricultural Science

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Iowa State Research Farm Progress Reports

Geological and Atmospheric Sciences

Publication Year

Articles 1 - 2 of 2

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Biomass Production And Soil Respiration In Experimental Riparian Grass Filter Strips, James W. Raich, Germán Mora Jan 2006

Biomass Production And Soil Respiration In Experimental Riparian Grass Filter Strips, James W. Raich, Germán Mora

Iowa State Research Farm Progress Reports

Grass filter strips established between cropped fields and streams have many potential conservation benefits, including trapping sediments and runoff, providing wildlife habitat, transforming nitrogen in runoff waters, sequestering soil carbon, and enhancing soil tilth. In this study, we compared five species of grasses with respect to above ground biomass production and soil respiration (i.e., CO2 flux), the latter being a robust measure of total soil biological activity. The information may help landowners select the best grass species for planting in streamside filters and buffer strips.


Estimation Of The Groundwater Nutrient Input To Clear Lake, William W. Simpkins, Keri B. Drenner Jan 2002

Estimation Of The Groundwater Nutrient Input To Clear Lake, William W. Simpkins, Keri B. Drenner

Iowa State Research Farm Progress Reports

A “Diagnostic and Feasibility Study” of Clear Lake, funded primarily by the IDNR, the City of Clear Lake, Cerro Gordo County, Hancock County, the Hancock and Cerro Gordo County offices of the NRCS, and Iowa State University (cost-share) was completed in 2001. The purpose of this two-year project was to study the Clear Lake watershed and community, to determine water-quality problems and their causes, and to suggest potential remedial measures. The feasibility of remedial alternatives is still under review by the IDNR and the City of Clear Lake.