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Effects of Cutting Lengths on Sweet Potato Yields in Sierra Leone

Published online by Cambridge University Press:  03 October 2008

W. Godfrey-Sam-Aggrey
W. Godfrey-Sam-Aggrey
Affiliation:
Department of Agronomy, Njala University College, University of Sierra Leone, Njala, Sierra Leone
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Summary

Effects of cutting lengths on tuber yields and vine production of Missus and Madam sweet potatoes, as influenced by two different fertilizer regimes, were studied on Njala upland soils of Sierra Leone. Cuttings 61 cm. long gave significantly the highest tuber yields for both early-maturing cultivars when fertilized with 336 kg. sulphate of ammonia, 112 kg. basic slag, 448 kg. sulphate of potash, 841 kg. lime and 340 kg. sulphate of magnesium per ha. in two split applications a month apart. Fertilized with 502 kg./ha. sulphate of ammonia per application for 4 applications, 61 cm. long cuttings again gave the highest vine production. The lower the vine/tuber ratio, the higher the tuber yield.

Type
Research Article
Information
Experimental Agriculture , Volume 10 , Issue 1 , January 1974 , pp. 33 - 37
Copyright
Copyright © Cambridge University Press 1974

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References

REFERENCES

Aldrich, D. T. A. (1963). E. Afr. agric. for. J. 29, 42.Google Scholar
Anon. (1919). Ann. Rep. Sierra Leone Dep. Agric. 22.Google Scholar
Anon. (1940). Malay. agric. J. 28, 221.Google Scholar
Boswell, V. R. (1950). Fmrs Bull. 2020 U.S. Dep. Agric. 38.Google Scholar
Dijkerman, J. C. & Breteler, H. (1969). Soil Survey of the Oil Palm Station and North-West Extension of Njala University College Farm. Njala University College.Google Scholar
Fielden, G. (1940). Vegetative Propagation of Tropical and Subtropical Plantation Crops. Tech. Comm. 13, Bur. Hort., East Malling.Google Scholar
Godfrey-Sam-Aggrey, W. (1971). Growing Sweet Potato for Tubers and Leaves. Njala Univ. Coll. Circ. 2.Google Scholar
Kennard, G. B. (1944). Trop. Agric., Trin. 21, 69.Google Scholar
MacDonald, A. S. (1963). Field Crop Abstr. 16, 219.Google Scholar
Norton, J. D. & Nettles, V. F. (1957). Florida State Univ. Ext. Circ. 160.Google Scholar
Odell, R. T. & Dijkerman, J. C. (1967). Properties, Classification and Uses of Tropical Soils. Njala University College.Google Scholar
Terra, G. J. A. (1966). Tropical Vegetables. Roy. Trop. Inst., Amsterdam. Netherlands Comm. 54e.Google Scholar
Van den Abeele, M. & Vandenput, R. (1958). Cultures du Congo Belge. Bruxelles: Govt Publ.Google Scholar