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| Web URL(s): | https://link.springer.com/article/10.1007%2FBF02232883
Last checked: 10/17/2016 |
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| Publication Type:
| Refereed |
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| Author(s): | Jackson, B. L. J.;
During, C. |
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| Author Affiliation: | Ruakura Agric. Res. Cent., Hamilton, New Zealand |
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| Title: | Studies of slowly available potassium in soils of New Zealand. 1. Effects of leaching, temperature and potassium depletion on the equilibrium concentration of potassium in solution |
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| Source: | Plant and Soil. Vol. 51, No. 2, March 1979, p. 197-204. |
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| Publishing Information: | Dordrecht, Netherland: Martinus Nijhoff Publishers |
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| # of Pages: | 8 |
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| Related Web URL: | https://www.springerlink.com/content/l6512x8222318x30/
Last checked: 10/06/2017
Notes: Abstract only |
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| Keywords: | TIC Keywords: Potassium; Soils; Lolium perenne; Nutrients
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| Geographic Terms: | New Zealand |
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| Abstract/Contents: | "The concentration of K in the soil solution at zero change of non-exchangeable K (Co) was determined at 20° and 50° for six topsoils of widely different clay mineralogy. This was done with and without prior removal of the K that was exchangeable to dilute salt solutions in a two to three hour leach. Except for one case Co was greater for leached than for not leached samples, particularly at the higher temperature. This is attributed to rapid 'edge-weathering' during leaching caused by interlayer penetration at the clay edges by calcium, sodium or hydronium ions. It is assumed that K newly exposed in this manner is not immediately exchangeable but that it exerts an influence on the equilibrium concentration of K in solution. Among soils Co was not related to the K available to ryegrass nor to the non-exchangeable K fraction of the uptake by ryegrass. However, much reduced values of Co were obtained after depletion by ryegrass in the new two soils examined." |
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| Language: | English |
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| References: | 18 |
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| See Also: | Other items relating to: Potassium |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jackson, B. L. J., and C. During. 1979. Studies of slowly available potassium in soils of New Zealand. 1. Effects of leaching, temperature and potassium depletion on the equilibrium concentration of potassium in solution. Plant Soil. 51(2):p. 197-204. |
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| Web URL(s):
https://link.springer.com/article/10.1007%2FBF02232883
Last checked: 10/17/2016 |
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MSU catalog number: SB 13 .P55 |
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