Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-08T02:49:35.783Z Has data issue: false hasContentIssue false
  • English
  • Français

Potassium-releasing power of soils from the Agdell rotation experiment assessed by glasshouse cropping

Published online by Cambridge University Press:  27 March 2009

P. W. Arnold  and
B. M. Close
P. W. Arnold
Affiliation:
Chemistry Department, Rothamsted Experimental Station, Harpenden, Hertfordshire
B. M. Close
Affiliation:
Chemistry Department, Rothamsted Experimental Station, Harpenden, Hertfordshire
Get access Rights & Permissions [Opens in a new window]

Extract

1. On cropping Agdell Experiment topsoils to exhaustion with perennial rye-grass in the glasshouse the total K uptakes were directly proportional to the initial exchangeable K contents of the soils.

2. The ability of the Agdell topsoils to release non-exchangeable K under glasshouse conditions decreased in the order: PK-rotation with fallow < NPK rotation with fallow < PK-rotation with clover < NPK-rotation with clover < no-fertilizerrotation with fallow = no-fertilizer rotation with clover.

3. Releases of non-exchangeable K were at least 2·5 times larger than the falls in the exchangeable K for all the Agdell soils.

4. In a ‘take-down’ experiment in the glasshouse on a soil receiving K fertilizer each year in the Saxmundham Rotation I Experiment, loosely held non-exchangeable K was released at a near-linear rate. At least a part of the loosely held non-exchangeable K in the Agdell soils was also released at a near-linear rate.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 57 , Issue 3 , November 1961 , pp. 381 - 386
Copyright
Copyright © Cambridge University Press 1961

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Arnold, P. W. & Close, B. M. (1961). J. Agric. Sci. (In the Press.)Google Scholar
Cooke, G. W., Mattingly, G. E. G. & Williams, R. J. B. (1958). J. Soil Sci. 9, 298.CrossRefGoogle Scholar
Ellis, B. G. & Mortland, M. M. (1959). Proc. Soil Sci. Soc. Amer. 23, 451.CrossRefGoogle Scholar
Jackson, M. L., Hseung, Y., Corey, R. B., Evans, E. J. & Vanden Heuvel, R. C. (1952). Proc. Soil Sci. Soc. Amer. 16, 3.CrossRefGoogle Scholar
Mortland, M. M. (1958). Proc. Soil Sci. Soc. Amer. 22, 503.CrossRefGoogle Scholar
Mortland, M. M. & Ellis, B. (1959). Proc. Soil Sci. Soc. Amer. 23, 363.CrossRefGoogle Scholar
Reitemeier, R. F. (1951). Advanc. Agron. 3, 113.CrossRefGoogle Scholar
Reitemeier, R. F., Brown, I. C. & Holmes, R. S. (1951). U.S. Dept. Agric. Tech. Bull. no. 1049.Google Scholar
Warren, R. G. (1957). Rep. Rothamst. Exp. Sta., p. 252.Google Scholar