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Controlling soil pH with different N-fertilizers in experiments with ryegrass in pots

Published online by Cambridge University Press:  27 March 2009

J. Bolton
Affiliation:
Roihamsted Experimental Station, Harpenden, Herts.

Summary

The pH of soil cropped with ryegrass increased with calcium nitrate as a fertilizer and decreased with ammonium nitrate, especially in the mid-range of pH. Changes above pH 7·2 and below pH 4·5 were small.

Yields of 4 cuts of grass given either N-fertilizer were similar over a pH range (in 0·01M-CaCl2) from 4·3 to 7·4. However, the composition of the grass and nutrient uptakes were affected by both soil pH and form of N-fertilizer.

Type
Short Note
Copyright
Copyright © Cambridge University Press 1971

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References

REFERENCES

Islam, A. & Bolton, J. (1970). The effect of pH on potassium intensity and release of non-exchangeable potassium to ryegrass. J. agric. Sci., Camb. 75, 571–76.CrossRefGoogle Scholar
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