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| DOI: | 10.2135/cropsci2008.01.0069 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/pdfs/48/6/2447
Last checked: 11/16/2016
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https://dl.sciencesocieties.org/publications/cs/articles/48/6/2447
Last checked: 11/16/2016
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Curtis, Matthew J.;
Claassen, Victor P. |
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| Author Affiliation: | University of California, Davis, Davis, California |
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| Title: | An alternative method for measuring plant available water in inorganic amendments |
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| Section: | Turfgrass science
Other records with the "Turfgrass science" Section
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| Source: | Crop Science. Vol. 48, No. 6, November/December 2008, p. 2447-2452. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 6 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/48/6/2447
Last checked: 11/16/2016
Notes: Abstract only |
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| Keywords: | TIC Keywords: Measurement; Techniques; Inorganic amendments; Available water; Soil water content; Pressure; Water holding capacity
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| Abstract/Contents: | Inorganic amendments (IA) added to the rootzone of turfgrass are used to increase plant available water (PAW), however conflicting amounts of PAW contents have been reported for some of these amendments. The concept of PAW and the common technique used to estimate PAW in IAs have been reviewed. We hypothesized that hydraulic nonequilibrium in pressure-plate measurements results in an underestimation of PAW. An alternative standardized method of measuring PAW in coarse-textured inorganic amendments is proposed using a combination of pressure plates, saturated salt solutions and a dew-point potentiometer. Water release curves were measured for four IAs (calcined clay, calcined diatomaceous earth, calcined volcanic ash mixed with diatomaceous earth, and zeolite) and their PAW contents determined. Results show that the proposed method provides a more accurate -1500 J kg-1 water content measurement than the pressure-plate method. Pressure-plate hydraulic nonequilibrium at -1500 J kg-1 resulted in a 0.002 to 0.012 m3 m-3 underestimation of PAW. The IAs examined in this study did not release appreciable amounts of internally held water until they were exposed to matric potentials more negative than usual in turfgrass management (-<300 J kg-1) The use of a standardized methodology for estimating PAW in IAs, such as the one described in this paper, will help to provide needed consistency and accuracy in information to practitioners. |
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| Language: | English |
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| References: | 16 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Curtis, Matthew J., and V. P. Claassen. 2008. An alternative method for measuring plant available water in inorganic amendments. Crop Sci. 48(6):p. 2447-2452. |
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| DOI: 10.2135/cropsci2008.01.0069 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/cs/pdfs/48/6/2447
Last checked: 11/16/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/articles/48/6/2447
Last checked: 11/16/2016
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2211522a |
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