Full TGIF Record # 13640
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Publication Type:
Author(s):Holford, I. C. R.
Author Affiliation:Agricultural Research Centre, R.M. B. 944 Tamworth, N.S.W. 2340, Australia.
Title:Buffering of Phosphate in the Soil Solution During Growth of Ryegrass Compared with Buffering by Sorption
Source:Plant and Soil. Vol. 111, No. 1, September 1988, p. 3-9.
Publishing Information:Dordrecht, Netherland: Martinus Nijhoff Publishers
Related Web URL:http://link.springer.com/article/10.1007/BF02182030
    Last checked: 10/14/2015
    Notes: Abstract only
Keywords:TIC Keywords: Phosphorus; Lolium; Uptake; Soil solution; Sorption; Fertilizer technology
Abstract/Contents:"Phosphate adsorption isotherms, extrapolated into the depletion zone of soil solution P, were similar in their overall slope to the regressions of P uptake by ryegrass on residual P concentrations in the soil solution after each of six successive harvests. These results, which occurred in 15 soils of diverse P characteristics, indicate that buffer capacities, derived from P adsorption isotherms, are satisfactory for characterising P desorption, as well as adsorption, in the context of P diffusion in the soil and P uptake by plants. During the latter stages of P uptake, buffer capacities were always greater than indicated by adsorption measurements, suggesting that non labile P was making a signficant contribution to the replenishment of the soil solution."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Holford, I. C. R. 1988. Buffering of Phosphate in the Soil Solution During Growth of Ryegrass Compared with Buffering by Sorption. Plant Soil. 111(1):p. 3-9.
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