A new biocontrol agent of Drechslera oryzae
Keywords:Drechslera oryzae, Trichoderma harzianum, antagonist, rice
The rice pathogen Drechslera oryzae and the antagonistic fungus Trichoderma harzianum were inoculated in the same substratum at different environmental conditions. The mechanisms exerted by T. harzianum as antagonist over D. oryzae and that on some occasions acted sinergically were: competitiveness for space and nutrients, mycoparasitism and a possible antibiosis. The antagonistic capacity of T. harzianum was higher as the values of water activity and temperature were increasing.
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