A new biocontrol agent of Drechslera oryzae

  • Francisca Sempere Universidad Politécnica de Valencia


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 some occasions acted sinergically were: competence by the 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.