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The effects on winter wheat of ammonium sulphate, with and without a nitrification inhibitor, and of calcium nitrate

Published online by Cambridge University Press:  27 March 2009

J. K. R. Gasser  and
F. G. Hamlyn
J. K. R. Gasser
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts.
F. G. Hamlyn
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts.
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Summary

Winter wheat grown on a sandy-loam and on a clay-loam soil was given ammonium sulphate alone or treated with the nitrification inhibitor, 2-chloro-6-(trichloromethyl)- pyridine, drilled with seed, in autumn. In spring, dressings of treated or untreated ammonium sulphate or of calcium nitrate, were broadcast. 75 or 150 lb N/acre were given on the sandy loam and 50 or 100 lb on the clay loam. Plants were sampled during growth and grain yield was measured.

Without fertilizer-N, the wheat yielded 17 cwt/acre on the sandy-loam and 46 cwt on the clay, and with the double dressings given in spring yields were 52 and 56 cwt/ acre. On the light soil, treated ammonium sulphate given in autumn increased yield by 3–5 cwt/acre with the single dressing and by 5–4 cwt/acre with the double one.

On the heavy soil the inhibitor had no effect on yield. Dressings of 50 lb N/acre in autumn or spring increased yields equally, but with 100 lb N/acre the spring dressing increased yield slightly more than autumn dressings. Calcium nitrate at 75 lb N/acre was significantly better than ammonium sulphate on the light soil.

The inhibitor did not affect the speed with which N was taken up, or the total uptake, from fertilizer given in spring.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 71 , Issue 2 , October 1968 , pp. 243 - 249
Copyright
Copyright © Cambridge University Press 1968

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References

REFERENCES

Devine, J. R. & Holmes, M. R. J. (1964). Field experiments comparing autumn and spring applications of ammonium sulphate, ammonium nitrate and calcium nitrate for winter wheat. J. agric. Sci., Camb. 69–74.CrossRefGoogle Scholar
Gasser, J. K. R. (1965). Effects of 2-chloro-6-(tri-chloromethyl) pyridine on the nitrification of ammonium sulphate and its recovery by ryegrass. J. agric. Sci., Camb. 64, 299–303.CrossRefGoogle Scholar
Large, E. C. (1954). Growth stages in cereals. Illustration of the Feekes scale. Pl. Path. 3, 128–9.CrossRefGoogle Scholar
Nowakowski, T. Z. & Gasser, J. K. R. (1967). The effect of a nitrification inhibitor on the concentration of nitrate in plants. J. agric. Sci., Camb. 68, 131–3.CrossRefGoogle Scholar
Widdowson, F. V., Penny, A. & Williams, R. J. B. (1961). Autumn nitrogen for winter wheat. J. agric. Sci., Camb. 57, 329–34.CrossRefGoogle Scholar
Widdowson, F. V. & Penny, A. (1965). Experiments measuring the residual effects of nitrogen fertilisers. J. agric. Sci., Camb. 65, 195–200.CrossRefGoogle Scholar