Geomedia 2013 Crack

• Progress 10/01/15 to 09/30/16OutputsTarget Audience:Target audiences include federal agencies (USDA-Natural Resources Conservation Service, EPA), state agencies (Missouri Department of Natural Resources, Missouri Department of Conservation), public water suppliers, and environmental groups (Environmental Resource Coalition of Missouri). Changes/Problems:Nothing ReportedWhat opportunities for training and professional development has the project provided?The project contributed to training two individuals who received graduate degrees. Laura Stakowski completed a MS degree studying the effects of riparian and grass vegetative buffer strips (VBS) on imidacloprid (ICD) fate and transport; knowledge of neonicotinoid sorption and transport is crucial to understanding the environmental risk of the most widely used class of insecticides. To determine imidacloprid's mobility and transport, batch sorption and column leaching experiments were performed. Columns were repacked silt loam soils from cropland (crop), grass VBS and riparian VBS. Water flow was characterized by applying bromide (Br-) as a nonreactive tracer. Radio-labeled (14C) ICD was applied as a pulse and ICD leaching was monitored for up to 45 d using a liquid scintillation counter. High performance liquid chromatography analysis confirmed absence of ICD degradation products. Bromide breakthrough curves were fitted for each column using CXTFIT, a convection/dispersion based transport equilibrium model with no sorption, and ICD breakthrough curves were fitted using HYDRUS 1D, multisite sorption chemical non-equilibrium transport models with linear sorption components. Sorption results indicated that ICD sorbs more strongly to riparian VBS than crop soil (p = 0.04) and organic carbon is the strongest predictor of ICD sorption (p < 0.0001). The column transport study found average peak concentrations of ICD at 5.83, 10.84 and 23.8 pore volumes for crop, grass VBS and riparian VBS, respectively. HYDRUS 1D results indicated that the two-sites, one-rate linear reversible model best-described results for the column breakthrough curves, indicating ICD is mobile in soil. Greater sorption and longer retention by the grass and riparian VBS soil compared to the crop soil suggests that VBS may be a viable means to mitigate ICD loss from agroecosystems. Syahrudin Zaibon completed a PhD degree studying degraded claypan landscapes as a potential resource for bioenergy production to minimize economic and environmental risks. The objectives of this study were (i) to evaluate the effects of reduced topsoil thickness and perennial switchgrass (Panicum virgatum L.) vs. a corn (Zea mays L.)-soybean [Glycine max (L.) Merr.] rotation on soil bulk density (ρb), saturated hydraulic conductivity (Ksat), soil water retention, and pore size distributions; (ii) to assess the influence of topsoil thickness on water infiltration in claypan soils for row crop and switchgrass production systems; and (iii) to determine the effect of topsoil thickness on soil thermal properties for switchgrass and row crop management systems. The experiment was carried out at the Soil Productivity Assessment for Renewable Energy and Conservation (SPARC) plots at the University of Missouri South Farm Research Center. Plots were recreated in 2009 with four levels of topsoil thickness (4, 11, 22, and 36 cm) on a Mexico silt loam (Vertic Epiaqualfs). Every plot was planted with either switchgrass or a corn-soybean rotation. The first objective results showed that soil under switchgrass had 53 and 27% higher macroporosity (>1000 µm diameter) and coarse mesoporosity (60-1000 µm diameter), respectively, than row crop management. This caused 73% greater Ksat and 11% higher water content at saturation than row crop management. Thicker topsoil treatments had constantly lower ρb and greater Ksat than the shallow topsoil treatments for all sampling depths. Results from the second objective indicated that switchgrass planted on degraded soil (shallow topsoil treatment) resulted in greater estimated saturated hydraulic conductivity, sorptivity, quasi-steady infiltration rate and field-saturated hydraulic conductivity values than with row crop management for both 2014 and 2015 measurement years. Results for selected mean frequencies of 24-hour USDA-NRCS Type II storms showed that switchgrass increased estimated water infiltration, reduced estimated runoff, and decreased estimated time from water ponding to end of ponding compared with row crop management. The results of the third objective revealed that the switchgrass treatment had significantly higher soil organic carbon, greater water content and lower bulk density than the row crop treatment which resulted in decreased λ (thermal conductivity) and D (thermal diffusivity) as well as increased Cv (volumetric heat capacity). The shallow topsoil thickness had greater thermal properties (λ, D and Cv) than deep topsoil thickness due to higher concentration of smectitic clay in the surface soil horizon. Results of these studies imply that establishment of switchgrass on degraded land can improve soil physical, hydraulic and thermal properties and may enhance the productivity of degraded claypan soils, while supplying biofuel feedstocks. How have the results been disseminated to communities of interest?Presentations at national scientific conferences. What do you plan to do during the next reporting period to accomplish the goals?Continue studies for research projects. ImpactsWhat was accomplished under these goals?Transport of pollutants to groundwater through geomedia is of concern to environmental engineers and scientists. The objective of this study was to utilize computed tomography (CT) to evaluate chemical transport through several undisturbed geomedia core samples. Linear pore velocities, dispersion coefficients, and dispersivity values were spatially determined at the downstream end of the core samples. Research showed that one of eight core samples had preferential flow paths which was expected due to the type of material evaluated. CT-time averaged, CT cross-sectionally averaged, and outflow methods gave average values of 0.0789, 0.0818, and 0.140 mm/s, respectively. The time-averaged CT method and cross-sectionally averaged CT method gave similar values for dispersivity (3.57 and 3.89 mm, respectively) while the outflow method gave higher values (4.98 mm). Higher dispersivity values for the outflow method were attributed to additional dispersion through the column end-plate. Future studies can evaluate chemical adsorption and degradation processes. PublicationsType:Journal ArticlesStatus:PublishedYear Published:2016Citation:Simmons, L.A., and S.H. Anderson. 2016. Effects of logging activities on selected soil physical and hydraulic properties for a claypan landscape. Geoderma 269:145-152.

• Type:Journal ArticlesStatus:PublishedYear Published:2016Citation:Udawatta, R.P., C.J. Gantzer, S.H. Anderson, and S. Assouline. 2016. Synchrotron microtomographic quantification of geometrical soil pore characteristics affected by compaction. SOIL 2:211-220. (Published by European Geosciences Union).

• Type:Journal ArticlesStatus:PublishedYear Published:2016Citation:Zaibon, S., S.H. Anderson, N.R. Kitchen, and S.I. Haruna. 2016. Soil physical and hydraulic properties affected by topsoil thickness in cultivated switchgrass and corn-soybean cropping systems. Soil Sci. Soc. Am. J. 80:1365-1376.

• Type:Journal ArticlesStatus:PublishedYear Published:2016Citation:Zeiger, S.J., J.A. Hubbart, S.H. Anderson, and M.C. Stambaugh. 2016. Quantifying and modeling urban stream temperature: A central US watershed study. Hydrological Processes 30:503-514.

• Type:Journal ArticlesStatus:PublishedYear Published:2016Citation:Adhikari, P., S.H. Anderson, R.P. Udawatta, and S. Kumar. 2016. Analysis of CT-measured pore characteristics of porous media relative to physical properties. Procedia Computer Science 95:442-449.

• Type:Journal ArticlesStatus:PublishedYear Published:2016Citation:Akdemir, E., S.H. Anderson, and R.P. Udawatta. 2016. Influence of agroforestry buffers on soil hydraulic properties relative to row crop management. Soil Science 181:368-376.

• Type:Journal ArticlesStatus:PublishedYear Published:2016Citation:Chandrasoma, J.M., R.P. Udawatta, S.H. Anderson, A.L. Thompson, and M.A. Abney, 2016. Soil hydraulic properties as influenced by prairie restoration. Geoderma 283;48-56.

• Type:Journal ArticlesStatus:PublishedYear Published:2016Citation:Ma, Y., Y. Li, S.H. Anderson, X. Zheng, X. Feng, and P, Gao. 2016. Diesel oil infiltration in soils with selected antecedent water content and bulk density. J. Central South Univ. (Springer) 23:1924-1930.

• Type:Journal ArticlesStatus:PublishedYear Published:2016Citation:Sahin, H., S.H. Anderson, and R.P. Udawatta. 2016. Water infiltration and soil water content in claypan soils influenced by agroforestry and grass buffers compared to row crop management. Agroforestry Systems 90:839-860.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Satkowski, L., K.W. Goyne, S.H. Anderson, R.N. Lerch, and L. Webb. 2016. Sorption and transport of imidacloprid in agroforestry buffer, grass buffer and cropland soils. 2016 Kirkham Conference, The Root Zone: Soil Physics and Beyond, Book of Abstracts p. 51. 10-14 April, Ben-Gurion University of the Negev, Israel.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Akdemir, E., S.H. Anderson, and R. Udawatta. 2016. Influence of agroforestry buffers and row crop management on soil hydraulic properties. 5th EUROSOIL International Congress Abstracts, European Confederation of Soil Science Societies, 16-21 October, Istanbul, Turkey.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Acikgoz, S., S.H. Anderson, C. Gantzer., A. Thompson, and R. Miles. 2015. Long-term soil and crop management effects on soil physical properties related to soil erodibility. 5th EUROSOIL International Congress Abstracts, European Confederation of Soil Science Societies, 16-21 October, Istanbul, Turkey.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Sahin, H., S.H. Anderson, and R. Udawatta. 2015. Water infiltration in claypan soils influenced by agroforestry and grass buffers for row crop management systems. 5th EUROSOIL International Congress Abstracts, European Confederation of Soil Science Societies, 16-21 October, Istanbul, Turkey.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Adhikari, P., S.H. Anderson, R.P. Udawatta, and S. Kumar. 2016. Analysis of CT-measured pore characteristics of porous media relative to physical properties. Complex Adaptive Systems Conference Abstracts. 2-4 November, Los Angeles, CA.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Fleetwood, M., S.H. Anderson, K.W. Goyne, and X. Xiong. 2016. Wettability of hydrophobic sand as influenced by wetting agent solution. 2016 American Society of Agronomy/Soil Science Society of America International Meeting Abstracts [CD-ROM]. 6-9 November, Phoenix, Arizona.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Haruna, S.I., S.H. Anderson, N.V. Nkongolo, and T.M. Reinbott. 2016. Soil thermal properties influenced by perennial biofuel and cover crop management. 2016 American Society of Agronomy/Soil Science Society of America International Meeting Abstracts [CD-ROM]. 6-9 November, Phoenix, Arizona.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Song, E., K.W. Goyne, S.H. Anderson, and X. Xiong. 2016. Effect of repeated application of wetting agents on hydrophobicity of USGA green. 2016 American Society of Agronomy/Soil Science Society of America International Meeting Abstracts [CD-ROM]. 6-9 November, Phoenix, Arizona.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Wickramarathne, N., R.P. Udawatta, R.N. Lerch, F. Liu, and S.H. Anderson. 2016. Landscape position and buffer effects on groundwater nitrogen. 2016 American Society of Agronomy/Soil Science Society of America International Meeting Abstracts [CD-ROM]. 6-9 November, Phoenix, Arizona.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Xiong, X., S.H. Anderson, K.W. Goyne, R.J. Kremer, and E. Song. 2016. Is it true that certain wetting agents remove organic coatings from water-repellent sand particles? 2016 American Society of Agronomy/Soil Science Society of America International Meeting Abstracts [CD-ROM]. 6-9 November, Phoenix, Arizona.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Zaibon, S., S.H. Anderson, N.R. Kitchen, A.L. Thompson, C.J. Gantzer, R.P. Udawatta, and S.I. Haruna. 2016. Soil water infiltration affected by biofuel and grain crop production systems in claypan landscapes. 2016 American Society of Agronomy/Soil Science Society of America International Meeting Abstracts [CD-ROM]. 6-9 November, Phoenix, Arizona.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Zaibon, S., S.H. Anderson, N. Kitchen, A. Thompson, C. Gantzer, and R. Udawatta. 2016. Effect of topsoil thickness on soil water infiltration in corn-soybean rotation and switchgrass production systems. p. 142, Soil and Water Conservation Society International Conference Abstracts, 26-29 July, Louisville, Kentucky.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Wickramarathne, N., R.P. Udawatta, R.N. Lerch, F. Liu, and S.H. Anderson. 2016. Differences in nitrogen and phosphorus in groundwater between claypan and loess watersheds in Missouri. Missouri Natural Resources Conference Abstracts, 3-5 February, Osage Beach, Missouri.

• Type:Conference Papers and PresentationsStatus:PublishedYear Published:2016Citation:Haruna, S.I., N.V. Nkongolo, and S.H. Anderson. 2016. Water infiltration as affected by cover crop and tillage management practices. Missouri Academy of Sciences Conference Abstracts, 22-23 April, Jefferson City, Missouri.

• Type:Journal ArticlesStatus:PublishedYear Published:2016Citation:Xiong, X., S.H. Anderson, and K.W. Goyne. 2016. Selection and use of wetting agents to improve infiltration and re-wettability on water-repellent sand greens. Golf Course Management 84(11):78-79.

• Type:Theses/DissertationsStatus:PublishedYear Published:2016Citation:Zaibon, S. 2016. Soil physical and hydraulic properties affected by topsoil thickness in cultivated switchgrass and corn-soybean production systems. Ph.D. Dissertation, Univ. of Missouri-Columbia.

• Type:Theses/DissertationsStatus:PublishedYear Published:2016Citation:Satkowski, L. 2016. Imidacloprid sorption and transport in cropland, grass buffer and riparian buffer soils. M.S. Thesis, Univ. of Missouri-Columbia.

Geomedia 2013 Crack

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