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The effect of soil characteristics on the zinc-copper interaction in the nutrition of wheat

Published online by Cambridge University Press:  27 March 2009

C. L. Arora  and
G. S. Sekhon
C. L. Arora
Affiliation:
Department of Soils, Punjab Agricultural University, Ludhiana, 141004, India
G. S. Sekhon
Affiliation:
Department of Soils, Punjab Agricultural University, Ludhiana, 141004, India
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Summary

A pot culture experiment was conducted on 11 soils differing in their physicochemical characteristics to study the occurrence of Zn-Cu interaction in relation to plant growth and Zn and Cu concentrations of wheat. The nature of the interaction was found to vary with the soils and the amounts of applied nutrients. The plant growth showed antagonistic interaction between Zn and Cu when one of the two elements was added in low amounts. However, when the two elements were applied in large amounts, their concentrations in the plants increased but the plant growth was adversely affected. The applied Zn generally failed to affect the uptake of native or low amounts of applied Cu whereas the applied Cu decreased the uptake of native zinc in five out of 11 soils.

The DTPA extractable amounts of Zn in experimental soils were not affected signicantly by Cu application and vice versa. The fact that the application of Zn or Cu may not affect or increase the uptake of each other may depend upon the soil characteristics and the rates of their application.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 99 , Issue 1 , August 1982 , pp. 185 - 189
Copyright
Copyright © Cambridge University Press 1982

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