25%苯醚甲环唑·咪鲜胺悬浮剂防治香蕉叶斑病药效试验

Evaluation of 25% difenoconazole azole prochloraz SC on banana leaf spot disease control

2010—2011年进行25%苯醚甲环唑.咪鲜胺悬浮剂对香蕉叶斑病药效试验。结果表明,25%苯醚甲环唑.咪鲜胺悬浮剂1000～2 000倍液可有效防治香蕉叶斑病,3次施药后10 d防效为75.25%～87.43%,其1 000倍液的防效极显著优于对照药剂25%苯醚甲环唑.咪鲜胺微乳剂1 500倍的防效,其2 000倍液处理的防效和对照药剂1 500倍处理相近,且在供试剂量下对香蕉植株生长无致害性影响。25%苯醚甲环唑.咪鲜胺悬浮剂可作为香蕉叶斑病防治中的新药剂,在发病初期开始施药,使用浓度为1 000～1 500倍。

During 2010--2011, the control effects of 25% difenoconazole azole prochloraz SC on leaf spot disease of banana have been evaluated under field.The results showed that 25% difenoeonazole azole proebloraz SC had good effect on leaf spot disease of banana, after spayed three times, the effect of 25% difenoconazole azole proehloraz diluted with 1 000-2 000 times dilution was 75.25% to 87.43% .Among that,the control effect of 25% difenoconazole azole proehloraz diluted with 1 000 times was compared with that of 25% difenoconazole azole prochloraz mieroemulsion diluted with 1 500 times and the difference was remarkable,and its 2 000 times dilution was equivalent to that of 25% difenoeonazole azole prochloraz microemulsion with 1 500 times at the same concentration,and 25% difenoconazole azole prochloraz SC had no harmful effect on the growth of banana plants.Therefore,The use of 25% difenoeonazole azole prochloraz SC after 1 000-1 500 times dilution at the beginning of disease occurrence, it could be applied on controlling the banana leaf spot disease.