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Leaching of potassium in illitic soil profiles as influenced by long-term application of inorganic fertilizers

Published online by Cambridge University Press:  27 March 2009

Bijay Singh  and
G. S. Sekhon
Bijay Singh
Affiliation:
Department of Soils, Punjab Agricultural University, Ludhiana 141004, India
G. S. Sekhon
Affiliation:
Department of Soils, Punjab Agricultural University, Ludhiana 141004, India
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Summary

The correlation between sorption and mobility of potassium in illitic soils has been used to compare K leaching in profiles under different fertilizer treatments in longterm experiments. Estimates of potassium saturation of the cation exchange capacity in 15 cm soil layers to a depth of 225 cm indicated maximum leaching of K in unfertilized soils. Application of N, P and K increased K uptake by plants, reduced K saturation and thus its leaching.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 91 , Issue 1 , August 1978 , pp. 237 - 240
Copyright
Copyright © Cambridge University Press 1978

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References

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