Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-03T05:34:49.194Z Has data issue: false hasContentIssue false

Boron Nutrition of Amazon Cocoa (Cacao theobroma) in Nigeria. I. Early Results of Fertilizer Trials

Published online by Cambridge University Press:  03 October 2008

S. O. Ojeniyi
Affiliation:
Cocoa Research Institute of Nigeria, PMB 5244, Ibadan, Nigeria
N. E. Egbe
Affiliation:
Cocoa Research Institute of Nigeria, PMB 5244, Ibadan, Nigeria
T. I. Omotosho
Affiliation:
Cocoa Research Institute of Nigeria, PMB 5244, Ibadan, Nigeria

Summary

Boron treatment was superimposed on half of 48 Amazon cocoa NK-treated plots in four locations across Southern Nigeria. Boron was deficient in soil and leaves of untreated 12-year-old Amazon cocoa, but boron treatment increased bean yield from 13 to 70%. Application of N and K fertilizers reduced the impact of soil-applied boron.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1981

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Asomaning, E. J. A. & Kwakwa, R. S. (1965). Boron deficiency symptoms in cocoa fruits. Proc. 2nd International Cocoa Research Conference, Ivory Coast, 3942.Google Scholar
Berger, K. C. & Truog, E. (1940). Boron deficiencies as revealed by plant and soil tests. Journal of the American Society of Agronomy 32:297301.CrossRefGoogle Scholar
Bowen, J. E. (1977). The fine art of using enough, but not too much boron. Crops & Soils Magazine, 08/09: 1214.Google Scholar
Gupta, S. K. (1978). Effect of soil properties on the extractable boron contents. Schweizerische land-wirtschaftliche Forschung 17:4550.Google Scholar
Jackson, M. L. (1958). Soil Chemical Analysis, 379. New Jersey: Prentice-Hall.Google Scholar
Maskell, E. J., Evan, H. & Murray, D. B. (1953). The symptoms of nutritional deficiencies in cacao produced in sand water cultures, in Report on Cocoa Research 1945–1951, 5464. Imperial College of Tropical Agriculture, Trinidad.Google Scholar
Omotosho, T. I. (1975). Boron nutrition problems of cocoa in Nigeria. Proc. 5th International Cocoa Research Conference, Nigeria, 312315.Google Scholar
Rajaratnam, J. A. (1973a). Movement and accumulation of boron in some Malaysian soils. Experimental Agriculture 9:233240.CrossRefGoogle Scholar
Rajaratnam, J. A. (1973b). Application, absorption and translocation of boron in oil palm. III. Leaf analysis for diagnosing boron requirements. Experimental Agriculture 9:257262.CrossRefGoogle Scholar
Russell, E. W. (1973). Soil Conditions and Plant Growth (10th edn) 654657. London: Longmans.Google Scholar
Saul, M. S. & Jose, L. C. (1970). The correction of boron deficiency in cacao in Ecuador. Tropical Agriculture, Trinidad 47:5761.Google Scholar
Tollenaar, D. (1967). Field symptoms of boron deficiency in cocoa. Cocoa Growers' Bulletin 8:1518.Google Scholar