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The agronomic properties of urea-containing compound fertilizers:I. High-nitrogen type

Published online by Cambridge University Press:  27 March 2009

P. A. Collier ,
A. E. M. Hood ,
R. A. Powell  and
W. G. Templeman
P. A. Collier
Affiliation:
Imperial Chemical Industries Ltd., Agricultural Division, Jealott's Hill Research Station, Bracknell, Berks.
A. E. M. Hood
Affiliation:
Imperial Chemical Industries Ltd., Agricultural Division, Jealott's Hill Research Station, Bracknell, Berks.
R. A. Powell
Affiliation:
Imperial Chemical Industries Ltd., Agricultural Division, Jealott's Hill Research Station, Bracknell, Berks.
W. G. Templeman
Affiliation:
Imperial Chemical Industries Ltd., Agricultural Division, Jealott's Hill Research Station, Bracknell, Berks.
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Summary

This paper reviews extensive work at Jealott's Hill and elsewhere in England and Wales on the agronomic effects of including various levels of urea in 2:1:1 NPK fertilizers combine-drilled with spring cereals.

Little evidence of phytotoxicity was found with fertilizers containing up to 12% urea and providing about 0·6 cwt N/acre. The inclusion of 20% urea reduced braird more frequently on soils of high pH than did lower proportions although grain yields were seldom affected adversely. Such soils are not uncommon, especially in the barleygrowing areas of Southern and Eastern England, where perhaps a quarter of the cereal acreage may be located on soils of pH 7·7 and above.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 74 , Issue 1 , February 1970 , pp. 153 - 160
Copyright
Copyright © Cambridge University Press 1970

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References

REFERENCES

Devine, J. R. & Holmes, M. R. J. (1963 a). Field experiments comparing ammonium nitrate, ammonium sulphate and urea applied repetitively to grassland. J. agric. Sci., Camb. 60, 297–304.CrossRefGoogle Scholar
Devine, J. R. & Holmes, M. R. J. (1963 b). Field experiments comparing ammonium sulphate, ammonium nitrate, calcium nitrate and urea combinedrilled with spring barley. J. agric. Sci., Camb. 61, 381–90.CrossRefGoogle Scholar
Devine, J. R. & Holmes, M. R. J. (1963 c). Field experiments on the value of urea as a fertilizer for barley, sugar beet, potatoes, winter wheat and grassland in Great Britain. J. agric. Sci., Camb. 61, 391–6.CrossRefGoogle Scholar
Dilz, K. & van Burg, P. F. J. (1963). Nitrogen fertilization of grassland. Comparison of the nitrogen fertilizer materials urea and nitrolime. Stikstof 7, 66–71.Google Scholar
Holliday, R. (1960). Plant population and crop yield: Part I. Fid Crop Abstr. 13, 159–67.Google Scholar
Hutchison, P. S. (1961). The longitudinal distribution pattern of fertilizer from combine drills. J. agric. Engng Res. 6, 157–60.Google Scholar
Low, A. J. & Piper, F. J. (1961). Urea as a fertilizer. Laboratory and pot-culture studies. J. agric. Sci., Camb. 57, 249–55.CrossRefGoogle Scholar
Mehring, A. L. & Cumings, G. A. (1930). Factors affecting the mechanical application of fertilizers to the soil. Tech. Bull. U.S. Dep. Agric. no. 182.Google Scholar
Stephen, R. C. & Waid, J. S. (1963). Pot experiments on urea as a fertilizer. II. The influence of other fertilizer constituents on the response of maize to urea. Pl. Soil 19, 97–105.CrossRefGoogle Scholar
Templeman, W. G. (1961). Urea as a fertilizer. J. agric. Sci., Camb. 57, 237–9.CrossRefGoogle Scholar
Widdowson, F. V., Penny, A. & Williams, R. J. B. (1964). Side-placing urea and other nitrogen fertilizers for spring barley. J. agric. Sci., Camb. 62, 73–82.CrossRefGoogle Scholar