Hostname: page-component-84b7d79bbc-l82ql Total loading time: 0 Render date: 2024-08-01T12:27:36.656Z Has data issue: false hasContentIssue false
  • English
  • Français

Field experiments on phosphate fertilizers. A joint investigation

Published online by Cambridge University Press:  27 March 2009

G. W. Cooke  and
F. V. Widdowson
G. W. Cooke
Affiliation:
Chemistry Department, Rothamsted Experimental Station, Harpenden, Herts
F. V. Widdowson
Affiliation:
Chemistry Department, Rothamsted Experimental Station, Harpenden, Herts
Get access Rights & Permissions [Opens in a new window]

Extract

The results of about ninety field experiments carried out over three years to test dicalcium phosphate, nitrophosphate, ammoniated fertilizer and Gafsa rock phosphate are summarized and discussed. Soils with pH values of 6·5 and below are listed as ‘acid’, those with higher pH values as ‘neutral’. All comparisons were made in terms of fertilizers supplying the same total amounts of phosphorus.

Dicalcium phosphate dihydrate gave approximately the same yields as superphosphate for potatoes (both on acid and on neutral soils) and for grass, kale and barley. In one group of swede experiments mostly carried out in the north-east of the country dicalcium phosphate was inferior to superphosphate, but it was equal to superphosphate in another group of swede experiments, most of which were on acid soils in wetter areas.

A nitrophosphate made in England on pilot-plant scale was consistently inferior to superphosphate for barley, potatoes and swedes.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 53 , Issue 1 , August 1959 , pp. 46 - 63
Copyright
Copyright © Cambridge University Press 1959

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

Angus, J. (1953). Proc. Fertil. Soc. no. 23.Google Scholar
Armiger, W. H. & Fried, M. (1958). J. Agric. Fd Chem. 6, 539.CrossRefGoogle Scholar
Cook, R. L., Lawton, K., Robertson, L. S. & Hansen, C. M. (1956). Proc. not. Comm. Fertil. Appl. 32, 49.Google Scholar
Cooke, G. W. (1956). J. Agric. Sci. 48, 74.CrossRefGoogle Scholar
Cooke, G. W., Mattingly, G. E. G. & Widdowson, F. V. (1958). J. Agric. Sci. 50, 253.CrossRefGoogle Scholar
Cooke, G. W. & Widdowson, F. V. (1958). Report on field experiments on phosphate fertilizers carried out in 1954 to 1957. Report presented to the National Agricultural Advisory Service, Conference of Soil Chemists, no. SC/C/261.Google Scholar
Crowther, E. M. & Yates, F. (1941). Emp. J. Exp. Agric. 9, 77.Google Scholar
d'Leny, W. (1953). Proc. Fertil. Soc. no. 24.Google Scholar
Terman, G. L., Bouldin, D. R. & Lehr, J. R. (1958). Proc. Soil Sci. Soc. Amer. 22, 25.CrossRefGoogle Scholar