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Nitrogen and potassium uptake by high-yielding potato crops

Published online by Cambridge University Press:  27 March 2009

O. P. Ifenkwe  and
E. J. Allen
O. P. Ifenkwe
Affiliation:
Department of Agriculture (Crop Husbandry), University College of Wales, Aberystwyth
E. J. Allen
Affiliation:
Department of Agriculture (Crop Husbandry), University College of Wales, Aberystwyth
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Summary

Results are presented from two experiments (1973 and 1974) in which high potato yields were obtained (60–70 t/ha). In both, Désirée and Maris Piper accumulated much more N and K (> 200 and 300 kg/ha respectively) than was applied as fertilizer (160 kg N and 189 kg K/ha). Increasing planting density (to levels above commercial practice) increased nutrient accumulation but had only small effects on yields. Thus, high yields are associated with but not necessarily caused by large accumulations of nutrients. As a general principle, increasing fertilizer rates above those shown to be optimal will not increase yields.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 101 , Issue 1 , August 1983 , pp. 103 - 111
Copyright
Copyright © Cambridge University Press 1983

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References

Allen, E. J. (1977). Effects of date of planting on growth and yield of contrasting potato varieties in Pembrokeshire. Journal of Agricultural Science, Cambridge 89, 711–735.CrossRefGoogle Scholar
Allen, E. J., Bean, J. N., Griffith, R. L. & O'Brien, P. J. (1979). Effects of length of sprouting period on growth and yield of contrasting early potato varieties. Journal of Agricultural Science, Cambridge 92, 151–163.CrossRefGoogle Scholar
Allen, E. J. & Scott, R. K. (1980). An analysis of growth of the potato crop. Journal of Agricultural Science, Cambridge 94, 583–606.Google Scholar
Archer, F. C, Victor, A. & Boyd, D. A. (1976). Fertilizer requirements of potatoes in the Vale of Eden. Experimental Husbandry 31, 72–79.Google Scholar
Berryman, C., Batey, T., Caldwell, T. H. & Boyd, D. A. (1973). Manuring of potatoes on fen silt soils in Holland, Lincolnshire. Journal of Agricultural Science, Cambridge 80, 269–281.Google Scholar
Birch, J. A., Devine, J. R., Holmes, M. R. J. & Whitear, J. D. (1967). Field experiments on the fertilizer requirements of maincrop potatoes. Journal of Agricultural Science, Cambridge 69, 13–24.Google Scholar
Boyd, D. A., Hill, R. J. & Batey, T. (1968). The effect on yield of maincrop potatoes of different methods of fertilizer application. Experimental Husbandry 16, 13–20.Google Scholar
Church, B. (1980). Use of fertilizers in England and Wales. Rothamsted Annual Report, 1979, pp. 105–110.Google Scholar
Dyson, P. W. & Watson, D. J. (1971). An analysis of the effects of nutrient supply on the growth of potato crops. Annals of Applied Biology 69, 47–63.Google Scholar
Evans, S. A. (1975). Maximum potato yield in the United Kingdom. Outlook on Agriculture 8, 184–187.CrossRefGoogle Scholar
Faithful, N. T. (1971). Simultaneous determination of nitrogen, phosphorus, potassium and calcium on the same herbage digest solution. Laboratory Practice 20 (1), 41–44.Google Scholar
Farrar, K. & Boyd, D. A. (1976). Experiments on the manuring of maincrop potatoes on soils of Ross Series. Experimental Husbandry 31, 64–71.Google Scholar
Gunasena, H. P. M. & Harris, P. M. (1971). The effect of CCC, nitrogen and potassium on the growth and yield of two varieties of potatoes. Journal of Agricultural Science, Cambridge 76, 33–52.Google Scholar
Ifenkwe, O. P. & Allen, E. J. (1978 a). Effects of row width and planting density on growth and yield of two maincrop potato varieties. 1. Plant morphology and dry-matter accumulation. Journal of Agricultural Science, Cambridge 91, 265–278.Google Scholar
Ifenkwe, O. P. & Allen, E. J. (1978 b). Effect of row width and planting density on growth and yield of two maincrop potato varieties. 2. Number of tubers, total and graded yields and their relationship with above ground stem densities. Journal of Agricultural Science, Cambridge 91, 279–289.Google Scholar
Kerketta, R. (1976). Growth, nitrogen, and leaf senescence in the potato. Ph.D. thesis, University of Reading.Google Scholar
Ralph, R. L. & Ridoman, W. J. (1981). A study of the effects of potassium fertilizer with special reference to wheat on boulder-clay soils. Journal of Agricultural Science, Cambridge 97, 261–296.Google Scholar
Thomas, R. L., Sheard, R. W. & Meyer, J. R. (1967). Comparison of conventional and automated procedures for nitrogen, phosphorus and potassium analysis of plant material using a single digestion. Agronomy Journal 59, 240–243.Google Scholar
van der Zaag, D. E. & Meijers, C. P. (1970). Black spot: physiological aspects. 4th Triennial Conference of the European Association for Potato Research, Brest 8–13. IX. 1969.Google Scholar
Webber, J., Boyd, D. A. & Victor, A. (1976). Fertilizer for maincrop potatoes on Magnesian Limestone soils: experiments in Yorkshire, 1966–7. Experimental Husbandry 31, 80–90.Google Scholar
Wurr, D. C. E. & Allen, E. J. (1974). Some effects of planting density and variety on the relationship between tuber size and tuber dry-matter percentage in potatoes. Journal of Agricultural Science, Cambridge 82, 277–282.Google Scholar