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| DOI: | 10.2136/sssaj1976.03615995004000030020x |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/sssaj/pdfs/40/3/SS0400030370
Last checked: 12/07/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Hons, F. M.;
Dixon, J. B.;
Matocha, J. E. |
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| Author Affiliation: | Hons: Graduate Assistant; Dixon: Professor, Soil Mineralogy, Texas A&M Univ., College Station, TX; Matocha: Associate Professor, Soil Chemistry, Texas A&M Univ. Agric. Res. and Ext. Ctr., Corpus Christi |
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| Title: | Potassium sources and availability in a deep, sandy soil of east Texas |
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| Section: | Soil chemistry
Other records with the "Soil chemistry" Section
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| Source: | Soil Science Society of America Journal. Vol. 40, No. 3, May/June 1976, p. 370-373. |
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| Publishing Information: | Madison, WI: Soil Science Society of America |
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| # of Pages: | 4 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/sssaj/abstracts/40/3/SS0400030370
Last checked: 12/07/2016
Notes: Abstract only |
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| Keywords: | TIC Keywords: Cynodon dactylon; Potassium; Plant response; Soil types
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| Abstract/Contents: | "Soil properties were assessed that may have contributed to the failure of Coastal bermudagrass [Cynodon dactylon (L. Pers.)] to respond to application of K on Darco fine sand for 5 consecutive years. The depth to which plant roots absorbed K was assessed by field observation and by determination of K levels in control and treatment plots. Potassium minerals were determined by chemical methods to assess potential nutrient sources. Potassium removal was indicated to at least 160 cm by soil solution content and to 235 cm by exchangeable K concentration and Gapon selectivity values. Depth of bermudagrass rooting was in agreement with chemical indicators of K removal. Mica and interstratified mica in the fine silt and clay fractions correlated best with exchangeable K (r2= 0.97) suggesting a direct influence of the finer micaceous materials in Darco soils upon K retained in an exchangeable form and possibly upon K release. Inclusion of feldspar-K with mica-K reduced the r2 value from 0.97 to 0.83 suggesting that K-feldspar does not contribute appreciable K to exchangeable form. Feldspar was present mostly in the sand and two coarser silt fractions which expose little surface area to weathering forces. The large rooting volume of Coastal bermudagrass in Darco soil in conjunction with the mica and appreciable interstratified mica present may explain why no plant response was obtained to K application." |
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| Language: | English |
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| References: | 28 |
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| See Also: | Other items relating to: Potassium |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hons, F. M., J. B. Dixon, and J. E. Matocha. 1976. Potassium sources and availability in a deep, sandy soil of east Texas. Soil Sci. Soc. Am. J. 40(3):p. 370-373. |
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| DOI: 10.2136/sssaj1976.03615995004000030020x |
| Web URL(s):
https://dl.sciencesocieties.org/publications/sssaj/pdfs/40/3/SS0400030370
Last checked: 12/07/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: S 590 .S65 |
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