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DOI: | 10.2136/sssaj1976.03615995004000060025x |
Web URL(s): | https://dl.sciencesocieties.org/publications/sssaj/pdfs/40/6/SS0400060883 Last checked: 12/07/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Rasnake, Monroe;
Thomas, Grant W. |
Author Affiliation: | Rasnake: Assistant Professor, Agronomy, Virginia Polytechnic Instit. and State Univ., Blackstone; Thomas: Professor, Agronomy |
Title: | Potassium status of some alluvial soils in Kentucky |
Section: | Soil fertility and plant nutrition Other records with the "Soil fertility and plant nutrition" Section
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Source: | Soil Science Society of America Journal. Vol. 40, No. 6, November/December 1976, p. 883-886. |
Publishing Information: | Madison, WI: Soil Science Society of America |
# of Pages: | 4 |
Related Web URL: | https://dl.sciencesocieties.org/publications/sssaj/abstracts/40/6/SS0400060883 Last checked: 12/07/2016 Notes: Abstract only |
Keywords: | TIC Keywords: Potassium; Soil types; Alluvial soils
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Geographic Terms: | Kentucky |
Abstract/Contents: | "Six alluvial soils from Kentucky were intensively cropped to Midland bermudagrass (Cynodon dactylon L. Pers.) to determine K availability in each soil. Potassium removal by the bermudagrass was compared to exchangeable K, to labile K estimated from Beckett quantity/intensity plots and to Gapon coefficients before and after cropping. Exchangeable K was not a good measure of uptake (r = 0.61 not significant), but labile K determined on soils before cropping and the Gapon coefficient after cropping gave highly significant linear correlations with K removed by bermudagrass. Exchangeable K after cropping changed an average of only 23 ppm K in the soils, but availability of K to plants was lowered drastically in all soils. This study shows that exchangeable K is an insensitive measurement of K availability to plants. Exchangeable K is a useable measurement only because wide ranges are used in determining classes of availability in soil testing." |
Language: | English |
References: | 21 |
See Also: | Other items relating to: Potassium |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Rasnake, M., and G. W. Thomas. 1976. Potassium status of some alluvial soils in Kentucky. Soil Sci. Soc. Am. J. 40(6):p. 883-886. |
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| DOI: 10.2136/sssaj1976.03615995004000060025x |
| Web URL(s): https://dl.sciencesocieties.org/publications/sssaj/pdfs/40/6/SS0400060883 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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