Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-03T05:30:05.607Z Has data issue: false hasContentIssue false
  • English
  • Français

Accumulation of nitrate in fresh soils after gamma irradiation

Published online by Cambridge University Press:  27 March 2009

P. A. Cawse  and
T. White
P. A. Cawse
Affiliation:
Wantage Research Laboratory (A.E.R.E.), Wantage, Berks.
T. White
Affiliation:
Wantage Research Laboratory (A.E.R.E.), Wantage, Berks.
Get access Rights & Permissions [Opens in a new window]

Summary

Increases in nitrate have been found in eight out of ten soils irradiated over the range 0·25–2·5 Mrad, with maximum accumulation between 0·25–0·75 Mrad. Oxidation of ammonium added to normal soils was poor at low pH, and showed a highly significant correlation with nitrate produced after 0·25 Mrad. It is suggested that radiation-released ammonium is less limiting to nitrate formation than the original population or activity of nitrifying organisms, which are favoured by alkaline conditions.

Type
Short Note
Information
The Journal of Agricultural Science , Volume 72 , Issue 2 , April 1969 , pp. 331 - 333
Copyright
Copyright © Cambridge University Press 1969

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

Bernard, V. V. & Geller, I. T. (1962). Effect of gamma rays on some groups of the soil microflora. Agrobiologiya. 4, 610–16.Google Scholar
Burgos, C. F. (1964). The effect of gamma radiation on soil nitrogen, phosphorus and organic matter. Ceiba 10, 53–5.Google Scholar
Cawse, P. A. (1967). Effects of low sub-sterilising doses of gamma radiation on carbon, nitrogen and phosphorus in fresh soils. J. Sci. Fd Agric. 18, 388–91.CrossRefGoogle ScholarPubMed
Cawse, P. A. (1968). Effects of gamma radiation on accumulation of mineral nitrogen in fresh soils. J. Sci. Fd Agric. 19, 395–8.CrossRefGoogle Scholar
Cawse, P. A. & Crawford, D. V. (1967). Accumulation of nitrite in fresh soils after gamma irradiation. Nature, Lond. 216, 1142–3.CrossRefGoogle Scholar
Eno, C. F. & Popenoe, H. (1964). Gamma radiation compared with steam and methyl bromide as a soil sterilising agent. Proc. Soil Sci. Soc. Am. 28, 533–5.CrossRefGoogle Scholar
Justice, J. K. & Smith, R. L. (1962). Nitrification of ammonium sulphate in a calcareous soil as influenced by combinations of moisture, temperature and levels of added nitrogen. Proc. Soil Sci. Soc. Am. 26, 246–50.CrossRefGoogle Scholar
Morrill, L. G. (1959). An explanation of the nitrification patterns observed when soils are perfused with ammonium sulphate. Ph.D. thesis, Cornell University.Google Scholar
Splittstoesser, D. F. & Massey, L. M. Jr (1967). Irradiation of composts used in propagation of Agaricus bisporus. Appl. Microbiol. 15, 646–9.CrossRefGoogle Scholar
Stevenson, I. L. & Chase, F. E. (1953). Nitrification in an orchard soil under three cultural practices. Soil Sci. 76, 107–14.CrossRefGoogle Scholar
Stojanovic, B. J. & Alexander, M. (1958). Effect of inorganic nitrogen on nitrification. Soil Sci. 86, 208–15.CrossRefGoogle Scholar
Stotzky, G. & Mortensen, J. L. (1959). Effect of gamma radiation on the growth and metabolism of microorganisms in an organic soil. Proc. Soil Sci. Soc. Am. 23, 125–7.CrossRefGoogle Scholar