Efficacy of several species of fungi bioagents and fungicides against <i>Magnaporthe oryzae in vitro</i>

On rice (Oryza sativa L.), more than 70 diseases caused by fungi, bacteria, viruses, and nematodes have been listed. Among them, the blast disease Magnaporthe oryzae B. Couch (syn. Pyricularia Cavara) seriously threatens global production worldwide. Effective management strategies such as use of resistant cultivars application fungicides individually cannot sustainably contain disease, because emergence resistance genes environmental threats. Therefore, applying bioagents to reduce M. infections, complete other strategies, pesticide dependence. The present work was carried out evaluate potential not only plant rhizosphere-associated fungi in controlling but also effectiveness five coculture vitro. Twenty-three biocontrol mainly Trichoderma Penicillium evaluated on six isolates were found pathogen growth dual culture assay. results obtained highlighted good ability inhibit 82.7 97% at 7 days after incubation. In addition, tested namely Amistar, Horizon, Opu, Spartaktak, Signum successfully inhibited mycelial oryzae. major outcome our study evidence that all susceptible through their concentration (ppm) 50% (EC50). No isolate hypersensitive or with EC50 average values 0.24, 0.25, 0.28, 0.33, 0.38 mg/l respectively for Spartak, Signum, Opus. These must be plants greenhouse best them could used IPM strategy combination a reasoned control.