References
- Al-Kanani , T. , A. J. Hussien , and N. N. Barthakut . 1989 . Potassium exchange equilibria in calcareous soils . Soil Science 148 : 286 – 292 .
- Barbayiannis , N. , V. P. Evangelou , and V. C. Keramidas . 1996 . Potassium-ammonium calcium quantity/intensity studies in the binary and ternary models in two soils of micaceous mineralogy of northern Greece . Soil Science 161 : 716 – 724 .
- Barrow , N. J. 1966 . Nutrient potential and capacity. II. Relationship between potassium potential and buffering capacity and the supply of potassium to plants . Australian Journal of Agricultural Research 17 : 849 – 861 .
- Beckett , P. H. T. 1964 . The immediate Q/I relations of labile potassium in the soil . Journal of Soil Science 15 : 9 – 23 .
- Beckett , P. H. T. 1972 . Critical cation activity ratios . Advances in Agronomy 24 : 376 – 412 .
- Evangelou , V. P. and A. D. Karathanasis . 1986 . Evaluation of potassium quantity-intensity relationships by a computer model employing the Gapon equation . Soil Science Society of American Journal 50 : 58 – 62 .
- Evangelou , V. P. and R. L. Blevins . 1988 . Effects of long-term tillage systems and nitrogen addition on potassium quantity-intensity relationships . Soil Science Society of America Journal 52 : 1047 – 1054 .
- Evangelou , V. P. , J. Wang , and R. E. Phillips . 1994 . New developments and perspectives on soil potassium quantity/intensity relationships . Advances in Agronomy 52 : 173 – 227 .
- Fergus , I. F. , A. E. Martin , L. P. Little , and K. P. Haydock . 1972 . Studies on soil potassium. II. The Q/I relation and other parameters compared with plant uptake of potassium . Australian Journal of Agricultural Research 10 : 95 – 111 .
- Jalali , M. 2005 . Release kinetics of non-exchangeable potassium in calcareous soils . Communications in Soil and Plant Analysis 36 : 1903 – 1917 .
- Jalali , M. 2006 . Kinetics of non-exchangeable potassium release and availability in some calcareous soils of western Iran . Geoderma 135 : 63 – 71 .
- Jimenez , C. and M. A. Parra . 1991 . Potassium quantity-intensity relationships in calcareous vertisols and Inceptisols of southern Spain . Soil Science Society of American Journal 55 : 985 – 989 .
- Johnston , A. E. and K. W. T. Goulding . 1990 . The use of plant and soil analyses to predict the potassium supplying capacity of soil . In Proceedings of the Development of K-Fertilizer Recommendations . pp. 177 – 204 . International Potash Institute , Basel , Switzerland .
- Krauss , A. 1993 . Role of potassium in fertilizer nutrient efficiency . In Proceedings of the Regional Symposium , Tehran , Iran .
- Krauss , A. 1999 . Balanced fertilization: The key for sustainable crop production . In Proceeding of the Regional Symposium , Tehran , Iran .
- Malakouti , M. J. 1999 . Iran confronts the imbalances in fertilizer use . In Proceeding of the Regional Symposium , Tehran , Iran .
- Mengel , K. and K. Uhlenbecker . 1993 . Determination of available interlayer potassium and its uptake by ryegrass . Soil Science Society of America Journal 57 : 561 – 566 .
- Mengel , K. , Rahmatullah , H. Dou. 1998 . Release of potassium from the silt and sand fraction of loss-drived soils . Soil Science 163 : 805 – 813 .
- Onchere , J. , K. W. T. Goulding , I. G. Wood , and J. A. Catt . 1989. Potassium and magnesium in some Kenyan soils: Their mineral sources and release to Ca-resin. Soil Science 40:621–634.
- Quirk , J. P. and J. H. Chute . 1968 . Potassium release from mica-like clay minerals , in Transactions of the 9th international congress of soil science , International Society of Soil Science , Sydney , Australia .
- Richards , J. E. and T. E. Bates . 1988 . Studies on the potassium-supplying capacities of southern Ontario: II. Nitric acid extraction of non-exchangeable K and its availability to crops . Canadian Journal of Soil Science 68 : 199 – 208 .
- Rowell , D. L. 1994 . Soil science: methods and application . Longman Group , Harlow , UK .
- Selim , H. M. , R. S. Mansell , and L. W. Zelanzy . 1976 . Modelling reactions and transport of potassium in soils . Soil Science 122 : 77 – 84 .
- Singh , B. B. and J. P. Jones . 1976 . Sorption isotherms for predicting potassium requirements of some Iowa soils . Communications in Soil and Plant Analysis 7 : 197 – 211 .
- Sinclair , A. H. 1979 . Availability of potassium to Ryegrass from Scottish soils. I. Effects of intensive cropping on potassium parameters . Journal of Soil Science 30 : 757 – 773 .
- Sparks , D. L. 1987 . Potassium dynamics in soils , in B. A. Stewart , ed., Advances in soil science . Springer-Verlag , New York .
- Sparks , D. L. and W. C. Liebhardt . 1981 . Effect of long-term lime and potassium application on quantity-intensity (Q/I) relationships in sandy soil . Soil Science Society of America Journal 45 : 786 – 790 .
- Wang , J. J. and A. D. Scott . 2001 . Effect of experimental relevance on potassium Q/I relationships and its implications for surface and subsurface soils . Communications in Soil and Plant Analysis 32 : 2561 – 2575 .
- Wang , J. J. , D. L. Harrell , and P. F. Bell . 2004 . Potassium buffering characteristics of three soils exchangeable potassium . Soil Science Society of American Journal 68 : 654 – 661 .
- Woodruff , C. M. 1955 . The energies of replacement of calcium by potassium in soils . Soil Science Society of America Journal 19 : 167 – 171 .