CORESTA Congress, New Orleans, 2002, APPOST 17 Study on the fertilizer efficiency of tobacco fungicide made of Trichoderma viride and its colonization on tobacco leaf and root WANG Ge; LI Tianfu; SHUN Chaomin; LI Meiyun; KONG Guanghui; LI Song; ZHU Weiming; LI Zhengguo; LI Tianfei; LIU Kaiqi HongTa Tobacco Group Co., R&D, Yuxi, Yunnan, China