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Effects 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 relationships with above-ground stem densities

Published online by Cambridge University Press:  27 March 2009

O. P. Ifenkwe  and
E. J. Allen
O. P. Ifenkwe
Affiliation:
Department of Agriculture (Crop Production), U.C.W., Aberystwyth
E. J. Allen
Affiliation:
Department of Agriculture (Crop Production), U.C.W., Aberystwyth
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Summary

Data are reported from three experiments from 1972 to 1974 which examined the effects of two row widths (66 cm and 132 cm) and five planting densities on number of tubers, tuber yields and tuber saleability of two maincrop potato varieties (Désirée and Maris Piper). Fewer tubers were generally found in 132 cm rows than in 66 cm rows; in 1972 reductions were most marked at high densities in both varieties and in 1974 effects were most pronounced in Maris Piper. Row width had little effect on total tuber yield at any stage of growth in either variety. The use of 132 cm rows reduced tuber greening, so that yields of saleable ware tubers at final harvest were not reduced by 132 cm rows in any year and in 1973 were higher in Désirée from 132 cm rows than from 66 cm rows. These results suggest that wider rows than are currently used in practice should be considered for maincrop potatoes, especially where water is not limiting.

Increasing planting density increased total yields in both varieties although the responsesto the final increments in planting density were small. Yields > 38 and > 57 mm declinedat the higher planting densities in Maris Piper and the optimum above-ground stem densities for ware grades differed markedly in the two varieties. Good relationships between tuber yieldsand number of above-ground stems were found in all years and support the use of stems as thebasic unit of density in this crop.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 91 , Issue 2 , October 1978 , pp. 279 - 289
Copyright
Copyright © Cambridge University Press 1978

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References

REFERENCES

Axlen, E. J. (1972). The effect of row width on the yield of three potato varieties. Journal of Agricultural Science, Cambridge 79, 315–321.Google Scholar
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.Google Scholar
Anon. (1974). Ware Standard (Exemptions) Prescription, 1974. London: Potato Marketing Board, Knightsbridge.Google Scholar
Ifenkwe, O. P. & Allen, E. J. (1978). 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
Jarvis, R. H. & Shotton, F. E. (1971). Population studies with King Edward potatoes. Experimental Husbandry 20, 12–29.Google Scholar
Jaevis, R. H. & Shotton, F. E. (1972). Comparison of 30 in. and 36 in. rows for maincrop potatoes. Part I. Effects on yield. Experimental Husbandry 21, 78–84.Google Scholar
Potato Mabketing Boabd (1969). Survey of Maincrop Potatoes.Google Scholar
Scott, R. K. & Yottngek, A. (1972). Potato agronomy in a changing industry. Outlook on Agriculture 7, 3—9.Google Scholar
Wurr, D. C. E. (1974). Some effects of seed size and spacing on the yield and grading of two maincrop potato varieties. I. Final yield and its relationship to plant population. Journal of Agricultural Science, Cambridge 82, 37–45.Google Scholar