caa a22 4500 445837640 CHVBK 20180317145334.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s00271-010-0218-4 doi (NATIONALLICENCE)springer-10.1007/s00271-010-0218-4 Physical and hydraulic properties of inorganic amendments and modeling their effects on water movement in sand-based root zones [Elektronische Daten] [Leonard Githinji, Jacob Dane, Robert Walker] The objective of this study was to evaluate the physical and hydraulic properties of selected inorganic amendments and their mixtures with sand (85:15% v/v), and model how they affect the water movement in sand-based root zones of sports fields. The amendments are composed of: calcined diatomaceous earth materials (Axis and Isolite); zeolites (Clinolite and Ecolite); and calcined clays (Moltan Plus, Profile, and Pro's Choice). The bulk density, particle density, porosity, particle-size distribution, saturated hydraulic conductivity, water retention and available water-holding capacity were analyzed. A numerical model was applied to simulate soil water movement for a scenario with and without amendment incorporation. The results showed that amendments significantly (P<0.05) improved the physical and hydraulic properties of root zone. Modeling results revealed reduced surface dryness, higher volumetric water content and storage and higher initial root water uptake rate for the root zones with amendments. These results suggest there are multiple benefits of amended root zones in terms of improvement of the physical and hydraulic properties of sand-based root zones. Springer-Verlag, 2010 Githinji Leonard Environmental and Natural Resource, Department of Agricultural and Environmental Sciences, Tuskegee University, 36088, Tuskegee, AL, USA aut Dane Jacob Department of Agronomy and Soils, Auburn University, 36849, Auburn, AL, USA aut Walker Robert Department of Agronomy and Soils, Auburn University, 36849, Auburn, AL, USA aut Irrigation Science Springer-Verlag 29/1(2011-01-01), 65-77 0342-7188 29:1<65 2011 29 271 https://doi.org/10.1007/s00271-010-0218-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00271-010-0218-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Githinji Leonard Environmental and Natural Resource, Department of Agricultural and Environmental Sciences, Tuskegee University, 36088, Tuskegee, AL, USA aut NATIONALLICENCE 700 1- Dane Jacob Department of Agronomy and Soils, Auburn University, 36849, Auburn, AL, USA aut NATIONALLICENCE 700 1- Walker Robert Department of Agronomy and Soils, Auburn University, 36849, Auburn, AL, USA aut NATIONALLICENCE 773 0- Irrigation Science Springer-Verlag 29/1(2011-01-01), 65-77 0342-7188 29:1<65 2011 29 271 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer