The nutrient status of soils under peasant cocoa farms of varying ages in Southwestern Nigeria

Biological Agriculture and Horticulture

Volumn 5, Issue 2, 1988, Pages 155-167

  Ekanade, Olusegun ^a  

^a OBAFEMI AWOLOWO UNIVERSITY   (Nigeria)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 15744376679     PISSN: 01448765     EISSN: None     Source Type: Journal    
DOI: 10.1080/01448765.1988.9755137     Document Type: Article

References (20)

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2. Are, L. A., Ashiru, G. A. & Odegbaro, O. A. (1971). Cocoa agronomy. In Progress in Tree Crop Research in Nigeria, pp. 52-67. Cocoa Research Institute of Nigeria; Ibadan.
3. Are, L. A. & Gwyne-Jones, D. R. G. (1974). Cocoa in West Africa. Oxford University Press; Ibadan.
4. Aweto, A. O. (1978). Secondary Succession and Soil Regeneration in a Part of the Forest Zone of Southwestern Nigeria. Unpublished Ph.D. Thesis, University of Ibadan.
5. Aweto, A. O. (1981). Organic matter build-up in fallow soil of a part of southwestern Nigeria and its effects on soil properties. Journal of Biogeography, 8, 67-74.
6. Ekanade, O. (1985). The Impact of Cocoa Cultivation on Soil Characteristics in Southwestern Nigeria. Unpublished Ph.D. Thesis, University of Ife.
7. Galletti, R., Baldwin, K. D. S. & Dina, I. O. (1956). Nigerian Cocoa Farmers. Oxford University Press; London.
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9. Jolly, A. L. (1942). Factors affecting field yields of cocoa in Grenada. Tropical Agriculture (Trinidad), 19, 234-243.
10. Kay, D. (1961). Die-back of Cocoa. West African Cocoa Research Institute, Technical Bulletin No. 8.
11. Keay, R. W. J. (1959). An Outline of Nigeria Vegetation. Government Printer; Lagos.
12. Kowal, J. M. L. (1959). The effect of spacing on the environment and performance of cocoa under Nigerian conditions. II. Ecological factors (soil moisture, soil nitrates, shade and micro-climate conditions). Empire Journal of Experimental Agriculture, 27, 138-149.
13. Lockard, R. G. & Asomaning, E. J. A. (1964). Mineral nutrition of cocoa (Theobroma cacao L.) I. Deficiency symptoms and nutrient levels in plants grown in sand culture. Plant & Soil, 21, 142-152.
14. Lockard, R. G. & Burridge, J. C. (1965). The levels of macro-and micro-nutrients in the beans of cocoa (Theobroma cacao L.) in relation to shade, fertiliser, irrigation and season. Annals of Botany. 29, 377-382.
15. Moss, R. P. (1969). The ecological background to landuse studies in tropical Africa, with special reference to the west. In Environment and Landuse in Africa (M. F. Thomas & G. W. Whithington, eds.), pp. 193-238. Methuen, London.
16. Ochse, J. J., Soule, M. J., Dijkman, M. J. & Wehlburg, C. (1961). Tropical and Subtropical Agriculture. Macmillan; New York.
17. Ogutuga, D. B. A. (1975). Some physical and chemical characteristics of the pod husk of F3 Amazon, Trinitario and Amelonado cocoa in Nigeria. Ghana Journal of Agricultural Sciences, 8, 115-120.
18. Ojeniyi, S. O., Egbe, N. E. & Omotosho, T. I. (1981). Boron nutition of Amazon cocoa (Cacao theobroma) in Nigeria. I. Early results of fertiliser trials. Experimental Agriculture, 17,399-402.
19. Smyth, A. J. & Montgomery, R. F. (1962). Soils and Landuse in Central Western Nigeria. Government Printer; Ibadan.
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