References
- Adams , F. 1974 . “ Soil solution ” . In The Plant Root and its Environment , Edited by: Carson , E.W. 441 – 481 . Charlottesville, VA : University Press of Virginia .
- Asher , C.J. and Ozanne , P.G. 1967 . Growth and potassium content of plants in solution cultures maintained at constant potassium concentration . Soil Sci. , 103 : 155 – 161 .
- Barber , S.A. and Cushman , J.H. 1981 . “ Nitrogen uptake model for agronomic crops ” . In Modeling Waste Water Renovation‐Land Treatment , Edited by: Iskander , J.K. 382 – 409 . New York, NY : Wiley Interscience .
- Brouder , S.M. and Cassman , K.G. 1994 . Evaluation of a mechanistic model of potassium uptake by cotton in vermiculitic soil . Soil Sci. Soc. Am. J. , 58 : 1174 – 1183 .
- Chen , J.H. and Barber , S.A. 1990 . Soil pH and phosphorus and potassium uptake by maize evaluated with an uptake model . Soil Sci. Soc. Am. J. , 54 : 1032 – 1036 .
- Claassen , N. 1990 . Die Aufnahme von Naehrstoffen aus dem Boden durch die hoehere Pflanze als Ergebnis von Verfuegbarkeit und Aneignungsvermoegen , Gottingen, , Germany : Severin‐Verlag .
- Claassen , N. and Barber , S.A. 1976 . Simulation model for nutrient uptake from soil by a growing plant root systems . Agron. J. , 68 : 961 – 964 .
- Claassen , N. , Syring , K.M. and Jungk , A. 1986 . Verification of a mathematical model by simulating potassium uptake from soil . Plant Soil , 95 : 209 – 220 .
- Glass , A.D.M. and Perley , J.E. 1980 . Varietal differences in potassium uptake by barley . Plant Physiol. , 65 : 160 – 164 .
- Kaselowsky , J. 1990 . Wirkung von Lagerungsdichte und Wassergehalt des Bodens auf die Verfuegbarkeit von Phosphat und Kalium sowie das Naehrstoffaneignungsvermoegen von Pflanzen , Gottingen, , Germany : University Gottingen . Ph.D.
- Meyer , D. 1993 . Effizienz von Kulturpflanzen bei der Nutzung des nicht austauschbaren Kaliums von Boeden , Gottingen, , Germany : University Gottingen . Ph.D.
- Newman , E.J. 1966 . A method of estimating the total root length in a sample . J. Appl. Ecol. , 3 : 139 – 145 .
- Nye , P.H. 1984 . On estimating the uptake of nutrients solubilized near roots or other surfaces . J. Soil Sci. , 35 : 439 – 446 .
- Parsons , R. 1959 . Handbook of Electrochemical Constants. , New York, NY : Academic Press .
- Pettersson , S. and Jensen , P. 1983 . Variation among species and varieties in uptake and utilization of potassium . Plant Soil , 72 : 231 – 237 .
- Schenk , M.K. and Barber , S.A. 1980 . Potassium and phosphorus uptake by corn genotypes in the field as influenced by root characteristics . Plant Soil , 54 : 65 – 76 .
- Shaw , J.K. , Stivers , R.K. and Barber , S.A. 1983 . Evaluation of differences in potassium availability in soils of the same exchangeable potassium level . Commun. Soil Sci. Plant Anal. , 14 : 1035 – 1049 .
- Silberbush , M. and Barber , S.A. 1983 . Prediction of phosphorus and potassium uptake by soybeans with a mechanistic mathematical model . Soil Sci. Soc. Am. J. , 47 : 262 – 265 .
- Tinker , P.B. 1965 . The effects of nitrogen, potassium and sodium fertilizers on sugarbeet . J. Agric. Sci. , 65 : 207 – 212 .
- Van Rees , K.C.J. , Comerford , N.B. and McFee , W.W. 1990 . Modeling potassium uptake by slash pine seedlings from low‐potassium‐supplying soils . Soil Sci. Soc. Am. J. , 54 : 1413 – 1421 .
- Werner , W. 1977 . Natrium‐wichtiger Naehrstoff fuer die Zukerruebe . Zuckerruebe , 26 (6) : 16 – 17 .
- Williams , R.F. 1948 . The effect of phosphorus supply on the rates of intake of phosphorus and nitrogen upon certain aspects of phosphorus metabolism in gramineous plants . Aust. J. Sci. Res. , 1 (B) : 333 – 336 .
- Corresponding author (e‐mail address: [email protected]).