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Effect of spacing on growth and yield of sunflower (Helianthus annuus L.) under two systems of dry farming in Sudan

Published online by Cambridge University Press:  27 March 2009

F. M. Khalifa
F. M. Khalifa
Affiliation:
Kenana Research Station, Abu-Naama, B.N.P., Sudan
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Summary

An experiment was conducted over a 2-year period at two sites in the central rainlands of Sudan under rainfed conditions at one location and under supplementary irrigation at the other to investigate the effects of cultivars and spacing on yield and yield components of sunflower. Row spacing had no significant effect on grain yield under either system of production. Under rainfed conditions, the late maturing cultivar Manchurian performed better under wider row spacing than Hungarian-A which is a medium late maturing variety. Size and number of seeds weie significantly affected by row width. It is argued that the choice of a row spacing for sunflower production on a commercial scale in dry regions should be evaluated in association with machine efficiency which is affected by plant height, stem circumference, head diameter and lodging, all of which were significantly affected by row width. Also the number of plants established per unit area of land differed between systems of farming.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 103 , Issue 1 , August 1984 , pp. 213 - 222
Copyright
Copyright © Cambridge University Press 1984

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References

Alex, A. H. (1975). Pollination of some oil seed crops by honeybees. Progress Report. Texas Agricultural Station. 1960, 5 pp., mimeographed.Google Scholar
Arnon, I. (1972). Crop Production in Dry Regions. II. Systematic Treatment of the Principal Crops. London: Leonard Hill.Google Scholar
Horie, T. & Udagawa, T. (1971). Canopy photosynthesis of sunflower plants, its measurement and modelling. Bulletin of the National Institute of Agricultural Sciences (Japan). Series A 18, 1–54.Google Scholar
Khalifa, F. M. (1981). Some factors influencing the development of sunflower (Helianthus annuus L.) under dry farming systems in Sudan. Journal of Agricultural Science, Cambridge 97, 45–53.CrossRefGoogle Scholar
Lloyd, N. D. H. & Canvin, D. T. (1977). Photosynthesis and photorespiration in sunflower selections. Canadian Journal of Botany 55, 3006–3012.CrossRefGoogle Scholar
Rawson, H. M. & Constable, G. A. (1980). Carbon production of sunflower cultivars in field and controlled environments. I. Photosynthesis and transpiration of leaves, stems and heads. Australian Journal of Plant Physiology 7, 555–573.Google Scholar