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Nitrogen, sulphur and carbon uptake from some nitrogenous fertilizers using 15N, 35S and 13C as tracers

Published online by Cambridge University Press:  27 March 2009

A. J. Low  and
F. J. Piper
A. J. Low
Affiliation:
Imperial Chemical Industries Limited, Jealott's Hill Research Station, Bracknell, Berks
F. J. Piper
Affiliation:
Imperial Chemical Industries Limited, Jealott's Hill Research Station, Bracknell, Berks
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Extract

1. Pot culture experiments are described comparing the recovery of nitrogen, and sulphur by the difference and ‘labelled atom’ methods and the recovery of carbon by the latter method. Italian ryegrass was used as the test crop with ammonium sulphate, calcium nitrate and urea as the fertilizers.

2. The recovery of fertilizer nitrogen was less using the ‘labelled atom’ technique than the conventional difference method.

3. The recovery of sulphur from ammonium sulphate ‘labelled’ with 35S was measured. It was considerably less than the nitrogen, but not inconsiderable especially as a basal dressing of ‘unlabelled’ K2SO4 was applied.

4. Using urea ‘labelled’ with 13C there was no evidence that any of the carbon was in the ryegrass four weeks after application.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 49 , Issue 1 , May 1957 , pp. 56 - 59
Copyright
Copyright © Cambridge University Press 1957

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References

REFERENCES

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