Evaluation of Soil Antagonism against the White Root Rot Fungus Rosellinia necatrix and Pathogen Mycosphere Communities in Biochar-amended Soil.

ABSTRACT: White root rot disease caused by Rosellinia necatrix is a growing issue in orchards, and biochar pyrolyzed from the pruned branch residues of fruit trees has potential as a soil amendment agent with a number of benefits, such as long-term carbon sequestration. However, the effects of pruned branch biochar on white root rot disease remain unclear. Therefore, we compared direct antagonism against R. necatrix between soils with and without pruned pear branch biochar using a toothpick method and then linked soil physicochemical properties and microbial communities with soil antagonism. The results obtained showed that soil antagonism against the pathogen, that is, the extinction zone of R. necatrix in mycelial toothpicks, decreased in soils amended with 20% (v/v) pruned branch biochar. Soil pH

SUBMITTER: Guo Y 

PROVIDER: S-EPMC11821764 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature