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Synergism and Field Efficacy of Mixed Preparations of Pyraclostrobin and Tebuconazole to Glomerella cingulata 被引量:1
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作者 吉沐祥 刘吉祥 +2 位作者 王建华 彭燕琼 李国平 《Agricultural Science & Technology》 CAS 2017年第2期347-352,共6页
[Objective] This study was conducted to screen high-efficient low-toxicity new compound preparation for control of Glomerella cingulata. [Method] The toxicity of pyraclostrobin, tebuconazole and their mixed preparatio... [Objective] This study was conducted to screen high-efficient low-toxicity new compound preparation for control of Glomerella cingulata. [Method] The toxicity of pyraclostrobin, tebuconazole and their mixed preparations to Glomerella cingulata was determined by mycelial growth rate method, and their control effects on Glomerella cingulata were evaluated by field efficacy test. [Result] The mixed preparations of pyraclostrobin and tebuconazole at mass ratios of 5:1, 3:1, 1:1, 1:3 and 1:5 exhibited ECso values to mycelial growth of Glomerella cingulata of 0.612 9, 0.530 1, 0.232 6, 0.232 8 and 0.329 6 iJg/ml, respectively; and the 5 preparations exhibit- ed synergistic coefficients (SRs) to Glomerella cingulata of 1.29, 1.33, 2.29, 1.84 and 1.22, respectively, and among them, the preparation with mass ratio of 1:1 showed the highest synergism. The field efficacy test showed that the field control effects of 1 000 times, 2 000 times and 3 000 times dilutions of 25% pyraclostrobin-tebuconazole suspension, 5 000 times dilution of 430 g/L tebuconazole suspension and 2 000 times dilution of 250 g/L pyraclostrobin EC were 91.54%, 90.80%, 82.88%, 76.43% and 74.10%, respectively. [Conclusions] Therefore, the mixed preparations of pyraclostrobin and tebuconazole showed remarkable synergism on control of Glomerella cingulata, and preparation with the mixing ratio of 1:1 exhibited the most significant synergism on Glomerella cingulata. For soaking treatment to fruit clusters with 1 000-2 000 times dilution of 25% pyraclostrobin .tebuconazole suspension, the field efficacy to Glomerella cingulata was over 90%. 展开更多
关键词 Glomerella cingulata PYRACLOSTROBIN TEBUCONAZOLE Mixed preparation Antifungal activity Field efficacy
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保护性杀菌剂与治疗性杀菌剂混配在防治砂糖桔砂皮病上的应用
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作者 车晖 李石来 《农家科技(理论版)》 2020年第9期60-60,64,共2页
砂糖桔砂皮病严重影响果实的外观品质,对果农造成重大损失,根据砂皮病的发病规律,春梢萌发期、落花2/3、幼果期、膨大期是防治砂皮病的关键时间点,在生产实践中应使用保护性杀菌剂+治疗性杀菌剂,如代森锰锌或克菌丹+吡醚·戊唑醇混... 砂糖桔砂皮病严重影响果实的外观品质,对果农造成重大损失,根据砂皮病的发病规律,春梢萌发期、落花2/3、幼果期、膨大期是防治砂皮病的关键时间点,在生产实践中应使用保护性杀菌剂+治疗性杀菌剂,如代森锰锌或克菌丹+吡醚·戊唑醇混配进行防治。 展开更多
关键词 保护性杀菌剂 代森锰锌 克菌丹 治疗性杀菌剂 吡醚·戊唑醇 砂糖桔砂皮病 防治效果
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