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Potassium depletion under long-term fertilization in a semi-arid soil in India

Published online by Cambridge University Press:  27 March 2009

S. B. Mittal ,
Raghbir Singh ,
S. C. Mehta  and
Mahendra Singh
S. B. Mittal
Affiliation:
Department of Soil Science, Haryana Agricultural University, Hisar, India
Raghbir Singh
Affiliation:
Department of Soil Science, Haryana Agricultural University, Hisar, India
S. C. Mehta
Affiliation:
Department of Soil Science, Haryana Agricultural University, Hisar, India
Mahendra Singh
Affiliation:
Department of Soil Science, Haryana Agricultural University, Hisar, India
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Summary

In 12-year (1975–87) fertilizer trial on a pearl millet-wheat rotation, there were no responses to applied K and exchangeable K decreased from 620 to 200 kg/ha. In spite of progressively diminishing exchangeable K, removal of K by crops was independent of soil K status, indicating that exchangeable K had no relation to K uptake in this soil. Thus, nonexchangeable K made a major contribution to plant K, up to 90% in untreated plots and > 70% in K-treated plots. A significant (r = -·708) relationship between nonexchangeable K and K fixation capacity was found. Nonexchangeable K was also significantly but negatively correlated (r = -0·583) with free energy exchange (ΔGr). Potassium supply values, expressed by pK-½p (Ca + Mg), were positively and significantly correlated with K removal by crops in 1987 and with the K saturation values of the exchange phase, so that both these measures can be successfully used to test soil K availability. The results of this study suggested that on this soil, under a pearl millet-wheat crop system, inclusion of K in the fertilizer programme may soon be needed.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 115 , Issue 2 , October 1990 , pp. 173 - 178
Copyright
Copyright © Cambridge University Press 1990

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References

REFERENCES

Gapon, E. N. (1933). On the theory of exchange adsorption in soils. Journal of General Chemistry (USSR) 3, 144–163.Google Scholar
Haryana Agricultural University (1970–1980). Annual Reports, Department of Soils. Hisar, India.Google Scholar
Hunsigi, G. & Srivastava, S. C. (1981). Some measures of potassium availability to sugarcane. Fertilizer News 26, 35–38.Google Scholar
Jackson, M. L. (1978). Soil Chemical Analysis. New Delhi: Prentice Hall of India Pvt. LtdGoogle Scholar
Mittal, S. B., Singh, A. P., Mehta, S. C. & Karwasra, S. P. S. (1987). Potassium buffering capacity in relation to crop growth and soil variables in some tropical soils. Tropical Agriculture 64, 217–220.Google Scholar
Page, M. B. & Talibudeen, O. (1982). Critical potassium potential for crops. 2. Potentials for wheat, maize, peas, beans and sugarbeet in their early growth on a sandy loam. Journal of Soil Science 33, 771–778.CrossRefGoogle Scholar
Ross, G. J. & Cline, R. A. (1984). Potassium exchange characteristics in relation to mineralogical properties and potassium uptake by grapes of selected soils in the peninsula of southern Ontario. Canadian Journal of Soil Science 64, 87–98.CrossRefGoogle Scholar
Singh, B. & Brar, S. P. S. (1977). Dynamics of native and applied potassium in maize-wheat rotation. Potash Review 6, 9/35, 1–6.Google Scholar
Singh, M., Mittal, S. B., Singh, A. P. & Singh, Mohinder. (1986). Evaluation of availability and quantity-intensity relationship of potassium in some soil series of Hisar, Haryana. Journal of the Indian Society of Soil Science 34, 421–424Google Scholar
Singh, R., Mittal, S. B., Singh, A. P. & Singh, Mohinder. (1983). Studies on the depletion pattern of soil potassium in pearl millet-wheat rotation. Journal of the Indian Society of Soil Science 31, 54–59.Google Scholar
Wild, A., Rowell, D. L. & Dgunfowoa, M. A. (1969). The activity ratio as a measure of intensity factor in potassium supply to plants. Soil Science 108, 432–439.CrossRefGoogle Scholar
Woodruff, C. M. (1955 a). Cation activities in the soil solution and energies of exchange. Soil Science Society of America Proceedings 19, 98–99.CrossRefGoogle Scholar
Woodruff, C. M. (1955 b). The energies of replacement of calcium by potassium in soils. Soil Science Society of America Proceedings 19, 167–171.CrossRefGoogle Scholar
Woodruff, C. M. & McIntosh, J. L. (1960). Testing for soil potassium. Proceedings, 7th International Congress of Soil Science. 3, 80–82.Google Scholar