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Response of dwarf wheat (Triticum aestivutm L.) to graded doses of P and K on soils of different available P status

Published online by Cambridge University Press:  27 March 2009

B. R. Singh ,
L. Singh  and
B. P. Singh
B. R. Singh
Affiliation:
Department of Soils, Haryana Agricultural University, Hissar, India
L. Singh
Affiliation:
Department of Soils, Haryana Agricultural University, Hissar, India
B. P. Singh
Affiliation:
Department of Soils, Haryana Agricultural University, Hissar, India
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Summary

Response of wheat to fertilizer-P on soils low and medium in available P increased with increasing doses up to 26 kg P/ha; responses were proportionately greater on medium-P soils. Application of 39 kg P/ha increased the response slightly on low-P but decreased it drastically on medium-P soils. The relatively small response on low-P soils may be due to fixation of fertilizer-P. The results indicate that the maximum response to fertilizer-P may be obtained only when P fixing capacity of the soil is satisfied so that sufficient P for the crop remains in the soil solution. The results of this investigation suggest that fertilizer should be applied on the basis of soil test data of individual fields instead of following regional recommendations.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 80 , Issue 2 , April 1973 , pp. 251 - 253
Copyright
Copyright © Cambridge University Press 1973

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References

Colwell, J. D. & Esdaile, R. J. (1968). The calibration, interpretation and evaluation of tests for the phosphorus fertilizer requirements of wheat in Northern New South Wales. Aust. J. Soil Res. 6, 105–20.CrossRefGoogle Scholar
Olsen, S. R., Cole, C. V., Watanabe, F. S. & Dean, L. A. (1954). Estimation of available P in soils by extraction with NaHCO3. Circ, U. S. Dep. Agric. No. 939.Google Scholar