Full TGIF Record # 169983
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Web URL(s):https://link.springer.com/article/10.1007%2Fs11104-010-0429-8
    Last checked: 10/05/2017
Publication Type:
Author(s):Öborn, Ingrid; Edwards, Anthony C.; Hillier, Stephen
Author Affiliation:Hillier: Macaulay Institute, Craigiebuckler, Aberdeen, UK; Öborn: Department of Crop Production Ecology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden; Edwards: Nether Backhill, Ardallie (by Peterhead), Aberdeenshire, UK
Title:Quantifying uptake rate of potassium from soil in a long-term grass rotation experiment
Section:Regular article
Other records with the "Regular article" Section
Source:Plant and Soil. Vol. 335, No. 1-2, October 2010, p. 3-19.
# of Pages:17
Publishing Information:Dordrecht, Netherlands: Kluwer Academic Publishers
Related Web URL:http://www.springerlink.com/content/251458r639057230/
    Last checked: 10/04/2010
    Notes: Abstract only
Keywords:TIC Keywords: Acetic acid; Nutrient uptake; Lolium perenne; Nutrient management; Nutrient retention; Potassium; Chemical soil analysis; Tissue testing
Abstract/Contents:"Soil-plant potassium (K) dynamics were studied using a long-term field experiment in order to evaluate the plant performance and K delivering capacity of the soil parent material. Rye grass (Lolium perenne L.) based rotations on a loamy sand derived from granitic bedrock were studied over 30 years with two K-fertilisation regimes, nil (K0) and 65 kg K ha-1 yr-1. Mineralogical and chemical methods were combined to identify and quantify soil K resources including the partitioning of K between minerals. Two or three cuts were taken annually and herbage yield and composition together with exchangeable soil K were analysed. Herbage yield declined with time and significantly reduced when the K concentrations approached 1%. The grass K concentration also declined over time and stabilized at around 0.5-0.7% (dw) in K0 in all cuts. Input-output mass balances showed an accumulated net K off-take (deficit) of 1,100 kg ha-1, i.e. 35 kg ha-1 yr-1. With an exchangeable K pool of 100 kg ha-1 (in the rooting zone 0-40 cm) this indicated a substantial release of K from mineral sources, most probably biotite and hydrobiotite. Assuming a similar net off-take was continued then this particular mineralogical K source would be depleted within two centuries. The study illustrates the strength of combining long-term field experimental data with state of the art quantitative mineralogical methods in order to assess site-specific resources, which can form a basis to evaluate the sustainability of different management practices."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Öborn, I., A. C. Edwards, and S. Hillier. 2010. Quantifying uptake rate of potassium from soil in a long-term grass rotation experiment. Plant Soil. 335(1-2):p. 3-19.
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DOI: 10.1007/s11104-010-0429-8
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    Last checked: 10/05/2017
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MSU catalog number: b2212822
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