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Biological Control Of Some Pathogenic Fungi By Trichoderma harzianum
And Bacillus megaterium
- Abdellaziz Taxanna and L. Larous
Department of Biology,
University of Sétif, 19000 Algeria,
E-mail: a.taxanna @mail.com
Abstract
The antagonistic effect of T. harzianum and B megaterium was tested on
various pathogenic fungi (Fusarium moniliforme, F. solani, F. graminarum,
Alternaria alternata and Aspergillus flavus) according to two different
methods. In the first method, the PDA medium was inoculated with T. harzianum
and B. megaterium 48h before the addition of pathogenic fungi, whereas in
the second, the biocontrol agent and fungal pathogen tested were added together
on the medium. Results showed 100% inhibition of some species by T.
harzianum, whereas the inhibition of B. megaterium to the fungi
studied was about 90-98%. The second method was less effective than the first,
in which the rate of inhibition was only 60-85%.
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