新疆加工番茄品种抗早疫病测定及防治药剂筛选

对15个加工番茄品种进行了田间抗早疫病鉴定,结果表明,供试品种中无抗病品种,耐病品种6个,占40%;感病品种9个,占60%。对加工番茄早疫病菌进行了室内毒力测定和小区药效试验,室内毒力测定结果表明:72%锰锌·霜脲氰WP对菌丝生长抑制效果最好,EC50值为8.1μg/mL,70%代森锰锌WP、58%甲霜·锰锌WP、10%苯醚甲环唑WP次之,其它的药剂抑菌效果较差。小区药效试验结果表明:72%锰锌·霜脲氰的防治防效最好,可达81.2%,其次是10%苯醚甲环唑WP、70%代森锰锌WP、58%甲霜·锰锌WP,防效分别为73.1%、71.0%和61.0%。

Screen Varieties Resistance and Fungicide to Early Blight of Processing Tomato

Fifteen processing tomato varieties were identified for the early blight resistance identification in the farm.The results showed that there were no resistant varieties,and 6 varieties were tolerable account for 40%,9 varieties were susceptible accounting for 60%.The control efficacy of twelve fungicides to early blight of processing tomato with experiments of indoor toxicity trials and field trials were compared.Indoor toxicity trials shows that Cymoxanil mancozeb 72% WP was the most effective fungicide against the pathogen with EC50of 8.1 μg/mL,Mancozeb 70% WP,Metalaxyl·mancozeb 58% WP,Difenoconazole 10% WP,and others with a low effect.Field plot trials showed that the control effects of Cymoxanil mancozeb 72% WP was the highest,the control efficacy reached to 81.2%,Mancozeb 70% WP,Metalaxyl·mancozeb 58% WP and Difenoconazole 10% WP in turn,with the average control efficacy of 73.1%,71.0% and 61.0%,respectively.