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The effects of potassium and magnesium fertilizers on yield and composition of successive crops of ryegrass, clover, sugar beet, potatoes, kale and barley on sandy soil at Woburn

Published online by Cambridge University Press:  27 March 2009

J. Bolton  and
A. Penny
J. Bolton
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts.
A. Penny
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts.
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Summary

In an 8-year field experiment, potassium sulphate and to a lesser extent magnesium sulphate increased yields of all crops both when applied alone and together. Although K/Mg interactions did not affect yields they considerably affected the ratio of concentrations of these elements in the dry matter of the crops. Sodium chloride increased yields of kale but not of barley harvested at ear-emergence.

Percentage yield response to potasium followed the order

Potatoes (218%) < clover = barley < sugar beet < kato; < ryegress (17%).

Magnesium increased yields from 3 to 10%, most with potatoes.

Changes in exchangeable magnesium in the soil reflected differences between applied magnesium and crop uptakes. Changes in exchangeable potassium were less than expected, probably because non-exchangeable potassium was released on plots without added potassium and ‘fixed’ in non-exchangeable forms on plots where much fertilizer potassium had been given.

Increase in the incidence of magnesium deficiency symptoms reported recently in South. East England are attributed to the local liming materials containing only small amounts of magnesium and to less F.V.M being applied to crops than previously.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 70 , Issue 3 , June 1968 , pp. 303 - 311
Copyright
Copyright © Cambridge University Press 1968

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References

REFERENCES

Basu, J. K. (1930). On the exchangeable bases and saturation capacities of soils with special reference to the effects of manures. Ph.D. Thesis, University of London.Google Scholar
Bolton, J. (1966). Magnesium deficiency at Woburn. Rep. Rothamsted Exp. Stn for 1965, 45–6.Google Scholar
Crowther, E. M. (1936). In Fifty Years of Field Experiments at the Woburn Experimental Station. Ed. Russell, E. J. and Voelcker, J. A.. Part IV. The Soil, p. 315–45. London: Longmans Green and Co.Google Scholar
Edwards, G. H. A. (1967). An evaluation of crop response to magnesium in the West Midlands 1952–58. Tech. Bull. Minist. Agric. Fish. Fd, no. 14, pp. 147–59. Soil potassium and magnesium. (London: H.M.S.O.)Google Scholar
Harrod, M. F. & Caldwell, T. H. (1967). The magnesium manuring of sugar beet on light sandy soils of East Anglia. Tech. Bull. Minist. Agric. Fish. Fd, no. 14, pp. 127–42. Soil potassium and magnesium. (London: H.M.S.O.)Google Scholar
Rook, J. A. F. & Rowland, S. J. (1962). Hypomagnesaemia and grass tetany Outl. Agric. 3, 151.CrossRefGoogle Scholar
Russell, E. J. & Voelcker, J. A. (ed.) (1936). Fifty Years of Field Experiments at Woburn Experimental station. (London: Longmans Green and Co.)Google Scholar
Salmon, R. C. (1963). Magnesium relationships in soils and plants. J. Sci. Fd Agric. 14, 605–10.CrossRefGoogle Scholar
Salt, P. D. (1967). Soil and plant analysis by flame emission spectrophotometry. Spectrovision, 18, 9. Unicam Instruments, Cambridge.Google Scholar
Tinker, P. B. H. (1967). The effects of magnesium sulphate on sugar beet yields and its interactions with other fertilizers. J. agric. Sci., Oamb. 68, 205–12.CrossRefGoogle Scholar
Widdowson, F. V. & Penny, A. (1967). Results of an experiment at Woburn testing farmyard manure and N, P and K fertilizers on five arable crops and a long ley. I. Yields. J. agric. Sci., Camb., 68, 95–102.CrossRefGoogle Scholar