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Changes occurring during a year in the soluble phosphorus and potassium in soil under crops in rotation experiments at Rothamsted, Woburn and Saxmundham

Published online by Cambridge University Press:  27 March 2009

I. P. Garbouchev
I. P. Garbouchev
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts
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Extract

From May 1963 to April 1964 seasonal changes in soluble nutrients were followed in soil samples taken monthly from plots having none, PK, and NPK fertilizers in experiments at Rothamsted and Woburn. Phosphorus, potassium and magnesium concentrations in equilibrium extracts of the soils made with 0.0lM-CaCl2 solution were determined. Exchangeable P was determined with an anion exchange resin. Samples were taken under five arable crops growing in rotation, and under permanent grass on the two soils.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 66 , Issue 3 , June 1966 , pp. 399 - 412
Copyright
Copyright © Cambridge University Press 1966

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References

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