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2021 Volume 34 Issue 3
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XING Yan, WAN Xuan-wu, ZHANG Guo-zhi, et al. Control Efficacy of 39.8% Pentafluoro-Butachlor Suspension Concentrate on Weeds in Transplanted Paddy Fields[J]. PLANT HEALTH AND MEDICINE, 2021, (3): 58-64. doi: 10.13718/j.cnki.zwys.2021.03.011
Citation: XING Yan, WAN Xuan-wu, ZHANG Guo-zhi, et al. Control Efficacy of 39.8% Pentafluoro-Butachlor Suspension Concentrate on Weeds in Transplanted Paddy Fields[J]. PLANT HEALTH AND MEDICINE, 2021, (3): 58-64. doi: 10.13718/j.cnki.zwys.2021.03.011
shu

Control Efficacy of 39.8% Pentafluoro-Butachlor Suspension Concentrate on Weeds in Transplanted Paddy Fields

  • 1. Agricultural and Rural Bureau of Guang'an City, Guang'an Sichuan 63800, China;

  • 2. Plant Protection Station of Sichuan Agricultural and Rural Department, Chengdu 610041, China;

  • 3. Agricultural and Rural Bureau of Pengxi County, Pengxi Sichuan 638399, China

More Information
  • Received Date: 21/03/2021

  • MSC: S451.21

  • There are many kinds of malignant weeds in paddy fields in Sichuan,and they are likely to re-growquickly after weeding treatment,which seriously restricts the production of rice. In order to provide a guidance for the scientific and efficient chemical control and management of malignant weeds in paddy fields,control experiments were carried out in Pengxi County and Guang'an District of Sichuan,in which 39.8% pentafluoro-butracholide suspension concentrate (SC) was applied to transplanted paddy fields,and the control efficacy of the agent on weeds recorded 5 and 10 days after seedling transplanting was compared. The results showed that the control efficacy of 39.8% pentafloro-butachlor SC on barnyard grass (Echinochloa crusgalli),heterosedge (Cyperus difformis L.),strangleweed (Lindernia procumbens) and other broad-leaved weeds was as high as 90% or more as investigated 15,30 and 45 days after application.With the same date of herbicide application,the higher the concentration,the better the control efficacy; and with the same herbicide concentration,the earlier the application,the better the control efficacy. Compared with the untreated control and the control herbicide 55% benzozoyl dry suspension agent,application of 39.8% pentafluoro-buchloride SC significantly increased rice yield.When applied 5 days after transplanting with a rate of 2 250 g/ha (the active ingredient was 895.50 g/ha),39.8% pentafluoro-buchloride SC gave a maximum yield increase rate of 12.42% and 12.54%in Pengxi County and Guang'an District,respectively.
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Control Efficacy of 39.8% Pentafluoro-Butachlor Suspension Concentrate on Weeds in Transplanted Paddy Fields

  • Received Date: 21/03/2021

Abstract: There are many kinds of malignant weeds in paddy fields in Sichuan,and they are likely to re-growquickly after weeding treatment,which seriously restricts the production of rice. In order to provide a guidance for the scientific and efficient chemical control and management of malignant weeds in paddy fields,control experiments were carried out in Pengxi County and Guang'an District of Sichuan,in which 39.8% pentafluoro-butracholide suspension concentrate (SC) was applied to transplanted paddy fields,and the control efficacy of the agent on weeds recorded 5 and 10 days after seedling transplanting was compared. The results showed that the control efficacy of 39.8% pentafloro-butachlor SC on barnyard grass (Echinochloa crusgalli),heterosedge (Cyperus difformis L.),strangleweed (Lindernia procumbens) and other broad-leaved weeds was as high as 90% or more as investigated 15,30 and 45 days after application.With the same date of herbicide application,the higher the concentration,the better the control efficacy; and with the same herbicide concentration,the earlier the application,the better the control efficacy. Compared with the untreated control and the control herbicide 55% benzozoyl dry suspension agent,application of 39.8% pentafluoro-buchloride SC significantly increased rice yield.When applied 5 days after transplanting with a rate of 2 250 g/ha (the active ingredient was 895.50 g/ha),39.8% pentafluoro-buchloride SC gave a maximum yield increase rate of 12.42% and 12.54%in Pengxi County and Guang'an District,respectively.

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