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Evaluation of Fungicides for the Control of Helminthosporium heveae on Hevea Rubber in Malaysia I. Laboratory Assessment

Published online by Cambridge University Press:  03 October 2008

P. D. Turner
P. D. Turner
Affiliation:
Harrisons & Crosfield (Malaysia) Sdn Bhd, Oil Palm Research Station, Banting, Selangor, Malaysia
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Summary

To evaluate the potential efficacy of fungicides for the control of birds' eye spot in rubber nurseries, 49 formulations were tested in the laboratory by the paper disc diffusion and liquid culture methods. After discarding phytotoxic fungicides, only certain of the carbamate compounds, especially thiram, and those containing manganese and difolatan showed mazked activity in both series of tests. The results were compazed with field experience, and for the most part good correlations were found between laboratory and field results, a marked exception being the poor in vitro inhibition shown by zineb. A bimodal growth response was shown by the fungus to some of the carbamate formulations.

Type
Research Article
Information
Experimental Agriculture , Volume 5 , Issue 1 , January 1969 , pp. 33 - 40
Copyright
Copyright © Cambridge University Press 1969

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References

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