50%氟吗啉·代森锰锌WP防治马铃薯晚疫病药效试验

Pharmacodynamic Test for Prevention and Control of Potato Late Blight with 50% Mancozeb·Flumorph WP

为明确50%氟吗啉.代森锰锌WP防治马铃薯晚疫病的效果和安全性,连续2年进行了田间药效试验。结果表明:在马铃薯晚疫病发生初期,使用剂量为每公顷1 200～1 600 g,间隔7～10 d,连续喷施3次,对晚疫病具有良好的防治效果,防效可达79.5%～84.3%,对马铃薯生长安全。

Pharmacodynamic test was carried on to find the effect and safety of prevention and control of potato late blight with 50% mancozeb·flumorph WP in the consecutive 2-year.The field trial results showed that the late blight of potato could be effectively controlled by continuous spraying for three times at the dosage of 1200-1600g.ha-1 of 50% mancozeb.flumorph WP,and at an interval of 7-10 days in the initial infection period.The control effect of disease reached 79.5%-84.3%,which was safe to potato.