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Fertilizer Responses by Coconuts (Cocos nucifera) on Two Contrasting Jamaican Soils

Published online by Cambridge University Press:  03 October 2008

R. W. Smith
R. W. Smith
Affiliation:
Research Department, Coconut Industry Board, P.O. Box 204, Kingston 10, Jamaica, W. I.
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Summary

The results from a 33 and two 25 factorial fertilizer experiments are presented. N-deficiency limited female flower production, rate of bunch production, and yield; K-deficiency reduced the setting of flowers and yield; nuts were larger where P was applied. The results are interpreted in the light of foliar analyses, and the concept of independant critical levels of the major nutrients is challenged. It is suggested that yield is related to the ratios between foliar N and K, but that the K level should in turn be interpreted in the light of a balance between the monovalent and divalent cations. Female flower production and setting can be used as a ready field guide to nutrient requirements.

Information

Type
Research Article
Information
Experimental Agriculture , Volume 5 , Issue 2 , April 1969, pp. 133 - 145
Copyright
Copyright © Cambridge University Press 1969

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References

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