Abstractsolution （AS） against Rhizocto- nia solani, Magnaporthe grisea and Ustilaginoidea virens. [ Method] The toxicity effect of 0.3% agricultural antibiotic 702 AS against R., solani, M. grisea and U. virens were...Abstractsolution （AS） against Rhizocto- nia solani, Magnaporthe grisea and Ustilaginoidea virens. [ Method] The toxicity effect of 0.3% agricultural antibiotic 702 AS against R., solani, M. grisea and U. virens were studied by mycelial growth rate method and mycelial wet weight method. [ Result ] The EC50 and EC50 values of agricultural antibiotics 702 AS to R. solani, M. grisea and U. virens in vitro condition were 4.16 and 16.17 mg/L, 16.05 and 41.85 mg/L, 111.2 and 389.0 mg/L, respectively. Agricultural antibi- otics 702 AS had good inhibition effect against R. solani and M. grisea and could basically achieve the effects of commercially available Jinggangmycin and kaanga- mycin, but the inhibition effect against U. v/rens was relatively weak. The preventive activity of aqueous solution was obviously higher than treatment activity. [Conclusion] 0.3% Agricultural antibiotic 702 AS is considered to be a potential biological control agent against R. solani, M. grisea and U. virens, and can be used as the potential alternative pesticide of Jinggangmycin.展开更多
基金Supported by National Natural Science Foundation of China(30960011,31071724)Natural Science Foundation of Jiangxi Province(2009GZN0030,2010GZN0037)+1 种基金Jiangxi Science and Technology Support Program(2009BNA07200)Fund for Key Laboratory of the Ministry of Agriculture of Agricultural Environment and Agricultural Products Safety
文摘Abstractsolution （AS） against Rhizocto- nia solani, Magnaporthe grisea and Ustilaginoidea virens. [ Method] The toxicity effect of 0.3% agricultural antibiotic 702 AS against R., solani, M. grisea and U. virens were studied by mycelial growth rate method and mycelial wet weight method. [ Result ] The EC50 and EC50 values of agricultural antibiotics 702 AS to R. solani, M. grisea and U. virens in vitro condition were 4.16 and 16.17 mg/L, 16.05 and 41.85 mg/L, 111.2 and 389.0 mg/L, respectively. Agricultural antibi- otics 702 AS had good inhibition effect against R. solani and M. grisea and could basically achieve the effects of commercially available Jinggangmycin and kaanga- mycin, but the inhibition effect against U. v/rens was relatively weak. The preventive activity of aqueous solution was obviously higher than treatment activity. [Conclusion] 0.3% Agricultural antibiotic 702 AS is considered to be a potential biological control agent against R. solani, M. grisea and U. virens, and can be used as the potential alternative pesticide of Jinggangmycin.
