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Foliar Diagnosis on Cotton in Macedonia

Published online by Cambridge University Press:  03 October 2008

G. A. Argyriadis  and
N. A. Polyzopoulos
G. A. Argyriadis
Affiliation:
Research Station for Soils and Fertilizers of Thessaloniki, Greece
N. A. Polyzopoulos
Affiliation:
Research Station for Soils and Fertilizers of Thessaloniki, Greece
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Summary

The results of eight fertilizer experiments with cotton, conducted in several areas of Macedonia, were evaluated by leaf analysis to establish possible relations between leaf N, P and K and yield, as well as to estimate the adequacy ranges of those elements under local conditions. Such a relation between leaf N and yield does exist, and leaf N within the range 4·4–4·9% of DM is adequate. On the other hand, leaf P and K within the ranges of 0·20–0·29 and 1·5–2·6%, respectively, also seem to be adequate. These findings are in agreement with general experience in this region, where cotton seldom benefits from application of fertilizers other than nitrogenous.

Type
Research Article
Information
Experimental Agriculture , Volume 13 , Issue 4 , October 1977 , pp. 395 - 399
Copyright
Copyright © Cambridge University Press 1977

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References

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