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Effects of Environment and Cultural Conditions on Nitrogen and Phosphorus in Coffee Leaves

Published online by Cambridge University Press:  03 October 2008

J. B. D. Robinson
J. B. D. Robinson
Affiliation:
East African Agriculture and Forestry Research Organization, Muguga, Kenya
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Summary

Analyses of total N and P in coffee leaves from different geographic areas have been compared. The levels of these nutrients are correlated with each other and the quadratic regression equation for leaf N on leaf P has been derived. The value of N/P ratio in the coffee leaf for diagnosing nutritional status is assessed. No correlations were observed between Mg and either N or P. Irrigation of coffee in Kenya on latosolic soils raises leaf P but not N levels, in the absence of organic mulch and fertilizers. Effects of organic mulch, N and P fertilizers on leaf levels of N or P are discussed.

Type
Research Article
Information
Experimental Agriculture , Volume 5 , Issue 4 , October 1969 , pp. 301 - 309
Copyright
Copyright © Cambridge University Press 1969

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References

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