This research is part of a study entitled “The Use of Local Trichoderma Biological Agents of Riau as Biofertilizer and Biopestisides in PHT to Control the Disease and Increase Rice Production“. The objective of this research to determine the effect and the ability of rice straw trichocompost with various stater of Trichoderma spp to control stem rot disease and blast disease in rice (Oryza …