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The relationships between tuber size and tuber concentrations of nitrogen, phosphorus and potassium

Published online by Cambridge University Press:  27 March 2009

E. J. Allen  and
D. C. E. Wurr
E. J. Allen
Affiliation:
Department of Agriculture (Crop Husbandry), U.C.W., Aberystwyth
D. C. E. Wurr
Affiliation:
National Vegetable Research Station, Wellesbourne, Warwick
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Summary

In each of two experiments two potato varieties were grown at a range of plant densities in order to provide mature tubers of different sizes for the study of the relationshipsbetween tuber size and tuber concentration of nitrogen (N), phosphorus (P) and potassium (K). As tuber size increased, the concentrations of tuber nutrients (g/100 g dry matter) declined to a minimum value and then tended to increase with a further increase in tuber size. This suggests that when tuber samples are taken for the determination of tuber nutrient concentration on a dry-weight basis the sampling procedure should ensure that results do not vary because of differences in the tuber size distribution.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 86 , Issue 3 , June 1976 , pp. 503 - 505
Copyright
Copyright © Cambridge University Press 1976

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References

Bleasdale, J. K. A. & Thompson, R. (1969). Some effects of plant spacing on potato quality. European Potato Journal 12, 173–87.CrossRefGoogle Scholar
Dyson, P. M. & 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.CrossRefGoogle Scholar
Faithfull, N. T. (1971). Automated, simultaneous determination of nitrogen, phosphorus, potassium and calcium on the same herbage digest solution. Laboratory Practice 20, 41–4.Google Scholar
Gray, D. (1974). Effects of nitrogen fertilizer applied to the seed crop on the subsequent growth of early potatoes. Journal of Agricultural Science, Cambridge 82, 363–9.CrossRefGoogle Scholar
Ifenkwe, O. P., Allen, E. J. & Wurr, D. C. E. (1974). Factors affecting the relationship between tuber size and tuber dry-matter content. American Potato Journal 51, 233–42.CrossRefGoogle 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, 277–82.CrossRefGoogle Scholar