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The Potential Availability of Organic Nitrogen Fractions in Some West Indian Soils

Published online by Cambridge University Press:  03 October 2008

I. S. Cornforth
I. S. Cornforth
Affiliation:
Regional Research Centre, University of the West Indies, St. Augustine, Trinidad
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Summary

The effect of four crops of maize on the distribution of organic nitrogen in ten West Indian soils, given either lime, P, K, Mg and trace elements or no fertilizers, was studied in a greenhouse experiment. The soils were also analysed for ‘available N’ by incubation and chemical methods. Variations in the redistribution of organic N fractions during the greenhouse experiment did not permit conclusions to be drawn on the source of N used by the maize, although the amount of hydrolysable N, particularly hexosamine, amino and hydroxy-amino N, in the initial samples was closely related to N uptake. Part of the chemically stable, non-hydrolysable organic N was broken down by soil organisms during the experiment; this was increased by liming acid soils.

Type
Research Article
Information
Experimental Agriculture , Volume 4 , Issue 3 , July 1968 , pp. 193 - 201
Copyright
Copyright © Cambridge University Press 1968

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