Carya cathayensis Sarg. is an economically important cultivated tree species in China, valued for its edible nuts (Li et al. 2023). Based on recent field investigations, Tuankou Town in Lin'an District has been identified as the region with the most severe incidence of root rot disease in C. cathayensis plantations across Zhejiang Province, where the plantations cover over 27 hectares with infection rates from 40% to 60%. In C. cathayensis root rot, the initial infection occurs in lateral roots,