Biological control of seedling damping-off of cucumber Control effect on rice dry seedling damping-off by calcium Identification on an antagonistic rhizobacterium X3 from rhizosphere of cucumber Screening and identifying antagonistic bacteria against Rhizoctonia solani and their biological control effects on soil-born damping-off disease of cucumber OCCURRENCE AND CONTROL OF PYTHIUM DAMPING OFF AND LEAF BLIGHT IN COOL-SEASONTURFGRASS