Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (31): 113-118.doi: 10.11924/j.issn.1000-6850.casb2021-1140

Special Issue: 生物技术 植物保护 园艺

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Bactericides Screening and Field Application for Banana Bacterial Soft Rot

FAN Huacai1(), ZENG Li1(), LI Weiyan2, DING Yunxiu2, GUO Zhixiang1, LI Shu1, XU Shengtao1, ZHENG Sijun1, WANG Yongbin3   

  1. 1Institute of Agriculture Environment and Resource, Yunnan Academy of Agricultural Sciences, Kunming 650205
    2Green Food and Rural Industry Development Center of Xishuangbanna Dai Autonomous Prefecture, Jinghong, Yunnan 666100
    3Yunnan Langcang Tea and Characteristic Biological Industry Development Center, Pu’er, Yunnan 665600
  • Received:2021-11-26 Revised:2022-07-15 Online:2022-11-05 Published:2022-10-27
  • Contact: ZENG Li E-mail:hcfan325@126.com;ynzengli@163.com

Abstract:

To screen effective bactericides against banana bacterial soft rot, indoor inhibitory, pot and field experiments were conducted to evaluate the control effect. The minimum inhibitory concentration method in the toxic medium method was used to determine the indoor inhibitory effect of 11 bactericides including antibiotics and non-antibiotics on the banana bacterial soft rot. Ten bactericides with inhibitory effect were selected for pot control experiment. Four bactericides with good pot control effect were selected for field control evaluation. The results are as follows. (1) Among the 11 kinds of antibiotics, tetramycin had good inhibitory effect, and the minimal inhibitory concentration (MIC) was 1.74 μg/mL, followed by streptomycin sulfate, kasugamycin, zhongshengmycin, of which the MIC was 9.10, 29.50 and 89.10 μg/mL, respectively. Among non-antibiotics bactericides’ tests, benziothiazolinone had the greatest inhibitory effect with MIC of 89.55 μg/mL, and the MIC of copper oxychloride and thiodiazole-copper was 445.00 and 595.00 μg/mL, respectively. (2) Pot experiment showed that kasugamycin, benziothiazolinone, zhongshengmycin and thiodiazole-copper had good control effect, with the control effect of 67.97%, 64.58%, 63.53% and 61.83%, respectively. (3) Field experiments showed that the control effect of kasugamycin was 90.19%, followed by that of benziothiazolinone, zhongshengmycin and thiodiazole-copper, which was 89.84%, 84.60% and 74.59%, respectively. In summary, the 4 bactericides have good control effect on banana bacterial soft rot, which could be popularized in production by spraying.

Key words: banana, Dickeya zeae, control, bactericides screening, field application

CLC Number: