The Adaptability of Trichoderma spp. in the Practicum Land of Politeknik Pertanian Negeri Payakumbuh and the Barrier Mechanism on Xanthomonas campestris pv.oryzae

Abstract

Trichoderma is a multifunctional fungus that is widely known and used as a biological control agent and a decomposer because of its ability to compete with pathogenic fungi and because it possesses cellulolytic enzymes that can decompose organic matters. This study was conducted to determine the presence and species of Trichoderma on the practicum land of Politeknik Pertanian Negeri Payakumbuh. The descriptive method was used to report the Trichoderma exploration conducted in two land locations, namely rice field and dry field. The exploration was not performed on a piece of land with healthy plants, but on one that has been used for >5 years. The results show that Trichoderma was found in both locations with the same percentage of presence of 20%. The species found was macroscopically and microscopically identified as Trichoderma harzianum. This antagonist agent demonstrated the ability to suppress Xantomonas campestris pv. oryzae by covering colonies of Xantomonas campestris pv. oryzae.