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| Web URL(s): | https://dl.sciencesocieties.org/publications/sssaj/pdfs/53/4/SS0530041075
Last checked: 12/07/2016
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| Publication Type:
| Refereed |
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| Author(s): | Knight, W. G.;
Allen, M. F.;
Jurinak, J. J.;
Dudley, L. M. |
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| Author Affiliation: | 1-USDA-ARS, Great Plains Systems Res. Fort Collins, CO; 2-Department of Biology and Systems Ecology Res. Group, San Diego University, CA; 3+4-Dept. of Soil Science and Biometeorology, Utah State Univ., UT. |
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| Title: | Elevated Carbon Dioxide and Solution Phosphorus in Soil with Vesicular-Arbuscular Mycorrhizal Western Wheatgrass |
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| Source: | Soil Science Society of America Journal. Vol. 53, No. 4, July/August 1989, p. 1075-1082. |
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| Publishing Information: | Madison, WIS |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Carbon Dioxide; Phosphorus; Soils; Elymus smithii; Calcareous soils; Arbuscular mycorrhizae; Mycorrhizal fungi; Glomus; Respiration; Carbon dioxide
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| Abstract/Contents: | "Plants infected by mycorrhizae may exhibit increased root/fungal respiration and elevated concentrations of CO2 in the root zone. Carbon dioxide is a thermodynamically viable calcium phosphate weathering agent in calcerous soils. The weathering of phosphate minerals in soils releases P to the soil solution. This study was conducted to determine if differences in soil atmosphere CO2, of consequence to plant P availability, may exist between mycorrhizal and nonmycorrhizal plants. Western wheatgrass (Agropyron smithii Rydb.) was inoculated with raw soil that contained propagules of Glomus spp. and grown in prefumigated soil columns in the greenhouse. Soil atmoshpere CO2 levels for inoculated plants averaged twice those of noninoculated plants in two separate experiments. The mean concentrations of CO2 in the soil atmosphere, measured at discrete weekly intervals, ranged between 0.13 and 2.63 kPa for inoculated systems and was significantly higher in 10 of 19 sampling events than for noninoculated systems (range of 0.05 to 1.02 kPa). Total plant P uptake was also significantly higher for inoculated compared with noninoculated plants. Total solution P, measured monthly in saturation throughput from experimental columns, was significantly higher in three of seven sampling events for inoculated compared with noninoculated plant systems. In treatments where noninoculated plants were grown under an imposed soil CO2 regime, total solution P was highly correlated with CO2. In soil systems where P availability is governed by the solubility of Ca-phosphate minerals, mycorrhizae may contribute to the P nutrition of host plants via a CO2-enhanced mineral weathering mechanism." |
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| Language: | English |
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| References: | 45 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Knight, W. G., M. F. Allen, J. J. Jurinak, and L. M. Dudley. 1989. Elevated Carbon Dioxide and Solution Phosphorus in Soil with Vesicular-Arbuscular Mycorrhizal Western Wheatgrass. Soil Sci. Soc. Am. J. 53(4):p. 1075-1082. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/sssaj/pdfs/53/4/SS0530041075
Last checked: 12/07/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 590 .S65 |
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