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| Web URL(s): | http://www.actahort.org/books/661/661_8.htm
Last checked: 04/2005
Access conditions: Item is within limited access website |
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| Publication Type:
| Report |
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| Author(s): | Li, Deying;
Volterrani, M.;
Christians, Nick E.;
Minner, Dave D. |
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| Author Affiliation: | Li: Department of Plant Sciences, North Dakota State University, Fargo, North Dakota; Volterrani: Department of Agronomy and Agro-system Management, University of Pisa, Pisa, Italy; Christians & Minner: Department of Horticulture, Iowa State University, Ames, Iowa |
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| Title: | Thermal properties of sand-based rootzone media modified with inorganic soil amendments |
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| Section: | Soil and water management
Other records with the "Soil and water management" Section
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| Meeting Info.: | Proceedings of the First International Conference on Turfgrass Management and Science for Sports Fields, Athens, Greece, June 2-7, 2003 |
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| Source: | Acta Horticulturae. Vol. 661, November 2004, p. 77-85. |
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| Publishing Information: | The Hague: International Society for Horticultural Science |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Water holding capacity; Thermal properties; Sand-based root zones; Inorganic amendments; Turfgrass Quality; Peat; Calcined clay; Calcined diatomaceous earth; Zeolites; Soil temperature; Heat stress
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| Trade Names: | Profile; Axis; Bioflex-a-clay |
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| Abstract/Contents: | "Thermal properties of rootzone media are very important physical factors that affect the energy balance and temperature distribution in the rootzone. Little research has been conducted to evaluate the thermal properties of inorganic soil amendments and their effects on turf quality. The objective of this study was to determine the effect of peat, calcined clay (Profile), calcined diatomaceous earth (Axis), zeolite clinoptilolite, and polymer coated clay (Bio-flex-a-clay) on the thermal characteristics of a sand-based medium. The thermal properties of these amendments alone and mixed with sand were measured using a thermal-time domain reflectromery (TDR) method at various water contents. The temperature effects of these amendments were evaluated in a field study where sand/inorganic amendment mixtures were used as rootzone media of a golf green. Volumetric heat capacities of the pure amendments were significantly different at oven-dried, -400 mm tension, and saturated conditions. When mixed at 85% sand and 15% amendments (v/v), the peat mixture had the highest heat capacity of 2.05x106 MJM-3C-1, all other inorganic soil amendments/sand mixtures had higher heat capacity values than that of sand, which was 1.59x106 MJM-3C-1 at -400 mm tension. Sand alone had the highest thermal diffusivity (9.20x10-7 M2S-1) and Axis had the lowest (7.43x10-7 M2S-1) at -400 mm tension. Although these thermal characteristics did not translate into differences in turf quality during most of the season, periodical temperature differences were detected in the rootzones. On August 12, 2001, maximum soil temperature at the rootzone surface reached 45.8°C in the plot treated with Axis when the air temperature was 30.5°C. Direct heat injury on the grasses as a result of those heat pulses was observed." |
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| ISBN: | 90 6605 306 2 |
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| Language: | English |
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| References: | 23 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Li, D., M. Volterrani, N. E. Christians, D. D. Minner, D. Li, and N. E. Christians. 2004. Thermal properties of sand-based rootzone media modified with inorganic soil amendments. Acta Horticulturae. 661:p. 77-85. |
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| Web URL(s):
http://www.actahort.org/books/661/661_8.htm
Last checked: 04/2005
Access conditions: Item is within limited access website |
| 
MSU catalog number: SB 13 .A25 no. 661
MSU catalog number: SB 433 .I55 2003 |
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