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Effects of Sett Size and Spacing on Tuber Yield of White Guinea Yam (Dioscorea rotundata) in the Rainforest and Savanna Zones of Nigeria

Published online by Cambridge University Press:  03 October 2008

G. O. Kayode
Affiliation:
National Cereals Research Institute, P.M.B. 5042, Ibadan, Nigeria

Summary

Field studies designed to investigate the effects of sett size and spacing on tuber yield of white Guinea yam were conducted in three locations over a two year period in the rainforest and savanna zones of Nigeria. Sett weights larger than 400 g could be used for maximum tuber yields in both forest and savanna zones. Spacing had no significant effects on tuber yield in the savanna zone, but optimum spacing has yet to be identified in the forest zone.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1984

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References

REFERENCES

Bouyoucos, G. H. (1951). A recalibration of the hydrometer method for making mechanical analysis of soils. Agronomy Journal 43:434438.CrossRefGoogle Scholar
Bray, R. H. & Kurtz, L. T. (1945). Determination of total, organic and available forms of phosphorus in soils. Soil Science 59:3945.CrossRefGoogle Scholar
Coursey, D. G. (1967). Yams. London: Longmans.Google Scholar
Gurnah, A. M. (1973). Effects of plant population and fertilizers on cassava yield. Proc. 3rd International Symposium on Tropical Root Crops. Vol. 1: 369377. Ibadan, Nigeria: IITA.Google Scholar
Jackson, M. L. (1962). Soil Chemical Analysis. Englewood Cliffs, New Jersey: Prentice Hall.Google Scholar
Kang, B. T. & Wilson, G. (1981). Effect of mound size and fertilizer on white Guinea yam (Dioscorea rotundata) in Southern Nigeria. Plant & Soil 61:319327.CrossRefGoogle Scholar
Kassam, A. H., Kowal, J., Dagg, M. & Harrison, M. N. (1975). Maize in West Africa and its potential in Savanna areas. Samaru Research Bulletin 250.Google Scholar
Kayode, G. O. & Agboola, A. A. (1981). Effects of different nitrogen levels, plant population and soil nutrient status on yield and yield components of maize in different ecological zones of Nigeria. Fertilizer Research 2:177191.CrossRefGoogle Scholar
Koli, S. E. (1973). The response of yam (Dioscorea rotundata) to fertilizer application in northern Ghana. Journal of Agricultural Science, Cambridge 80:245249.CrossRefGoogle Scholar
Lyonga, S. N., Fayemi, A. A. & Agboola, A. A. (1973). Agronomic studies on edible yams (Dioscorea spp.) in the grassland plateau region of the United Republic of Cameroon. Proc. 3rd International Symposium on Tropical Root Crops. Vol. 2: 255269. Ibadan, Nigeria: IITA.Google Scholar
Miege, J. (1957). Influence de quelque caracteres des tubercules semancos sur la levee et le rendement des ignames cultivees. Journal d'Agriculture Tropicale et de Botanique Applique 4:315342.CrossRefGoogle Scholar
Onwueme, I. C. (1972). Influence of the weight of the planted tuber on the vegetative performance of white yam (Dioscorea rotundata poir) plants. Nigerian Agricultural Journal 9:170173.Google Scholar
Onwueme, I. C. (1978). The Tropical Tuber Crops. New York: John Wiley & Sons.Google Scholar
Unamah, R. P. A., Akobundu, I. O. & Fayemi, A. A. A. (1981). Effect of weed interference on concentration of some major nutrient elements in yam (D. rotundata). Paper presented at the 9th Annual Conference of the Soil Science Society of Nigeria. Owerri, Nigeria.Google Scholar
Walkley, A. & Black, T. A. (1934). An examination of the Dgtjareff method for determining soil organic matter and a proposed modification of the chromic acid titration method. Soil Science 37:2930.CrossRefGoogle Scholar