Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-29T11:39:33.487Z Has data issue: false hasContentIssue false
  • English
  • Français

The effect of nitrogenous fertilizers on white clover

Published online by Cambridge University Press:  27 March 2009

A. J. Low  and
E. R. Armitage
A. J. Low
Affiliation:
Imperial Chemical Industries Limited, Agricultural Division, Jealott's Hill Research Station, Bracknell, Berks.
E. R. Armitage
Affiliation:
Imperial Chemical Industries Limited, Agricultural Division, Jealott's Hill Research Station, Bracknell, Berks.
Get access Rights & Permissions [Opens in a new window]

Summary

The comparative effects of very heavy dressings of ammonium sulphate and urea on the growth of established plants of white clover (S100) have been studied in pot culture. Five applications each of 263 kg N/ha were applied over 9 months in 3 different ways (i) direct contact of the fertilizers with the leaves, (ii) only with the stolons or surface roots or (iii) applied 12·5 cm below the soil surface.

The ammonium sulphate broadcast over the leaves reduced the growth of the clover whilst urea under the same conditions caused temporary damage with very little reduction in dry weight compared with the control. When the ammonium sulphate was applied to the soil surface or 12·5 cm below, there was appreciable reduction in dry weight but less than when the fertilizer was in contact with the leaves. Under the same conditions, urea did not reduce growth.

The pH of the soil fell to about 4·6 with ammonium sulphate (control 6·1) but only slightly with urea.

Root development was not affected by urea but greatly reduced with ammonium sulphate. With both fertilizers the root nodules were very pale in colour and few in number compared with the control.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 74 , Issue 3 , June 1970 , pp. 583 - 589
Copyright
Copyright © Cambridge University Press 1970

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

Allos, H. F. & Bartholomew, W. V. (1955). Effect of available nitrogen on symbiotic fixation. Proc. Soil Sci. Soc. Am. 19, 182–4.CrossRefGoogle Scholar
Allos, H. F. & Bartholomew, W. V. (1959). Replacement of symbiotic fixation by available nitrogen. Soil Sci. 87, 61–6.CrossRefGoogle Scholar
Armitage, E. R. & Templeman, W. G. (1964). Response of grassland to nitrogenous fertilizers in the West of England. J. Br. Orassld Soc. 19, 2911–7.Google Scholar
Boynton, D. (1954). Nutrition by Foliar Application. A. Rev. PI. Physiol. 5, 31–54.CrossRefGoogle Scholar
Brown, B. A. & Munsell, R. I. (1956). Clovers in permanent grassland as influenced by fertilization. Bull. Storrs agric. Exp. Stn Univ. Connecticut, Bull. 329.Google Scholar
Cowling, D. W. (1961). The effect of nitrogenous fertilizer on established white clover sward. J. Br. Orassld Soc. 16, 65–8.CrossRefGoogle Scholar
Furutani, S., Omura, H., Osajima, Y. & Yamafuji, K. (1964). Enzymatic study of assimilation of urea and ammonia in tissue of higher plants. Enzymologia 28 (52) 278–303.Google Scholar
Heddle, R. G. (1966). The after effects of varying rates of spring application of nitrogen and of dates of first defoliation on the yield and botanical composition of a grass/clover sward. J. Br. Orassld Soc. 21, 251–7.CrossRefGoogle Scholar
Low, A. J. (1948). Fluorescent lighting for pot culture. Agriculture, Lond. 55, 210–11.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.Google Scholar
Mitsui, S. & Kurihara, K. (1957). The intake and utilization of carbon by plant roots from 14C labelled urea. Part I. The determination of radioactive carbon of plant materials and a preliminary seedling experiment utilising 14C labelled urea. Soil PI. Fd, Tokyo 3, 59–64.Google Scholar
Munns, D. N. (1965). Soil acidity and growth of a legume. Aust. J. agric. Res. 16, 733–66.Google Scholar
Reinbothe, H. & Mothes, K. (1962). Urea, Ureides and Guanidines in Plants. A. Rev. PI. Physiol 13, 129–50.Google Scholar
Sears, P. D. (1950). Soil fertility and pasture growth. J. Br.Orassld Soc. 5, 267–80.CrossRefGoogle Scholar