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Decrease of Herbicide Bromobutide and its Debromo Metabolite in Paddy Field Soil during 24 weeks After Application

Abstract

Variations in concentrations of herbicide bromobutide (RS)-2-bromo-N-(α,α-dimethylbenzyl)-3,3-dimethylbutyramide, and its metabolite bromobutide-debromo, N-(α,α-dimethylbenzyl)-3,3-dimethylbutyramide were investigated in soils from three paddy fields used for rice farming at 24 weeks after application. The bromobutide concentration was maximum within 24 h after application. That of bromobutide-debromo was maximum within 5–7 days of application. Each gradually decreased to below detection limits at 12–22 weeks after application. Bromobutide was detected up to 76–104 days after application in the paddy soils, whereas bromobutide-debromo was detected up to 125 days after application. The bromobutide composition was higher than 90 % within 6 days of application, decreasing to less than 5 % by 125 days of application. The decrease of bromobutide amount in the soil was inferred as the first-order reaction. The bromobutide half-life was calculated as 12–21 days (16 days mean) during 18–104 days following application.

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References

  1. Amano S, Kagiya T, Katami T (2001) Behavior and control of thiobencarb and mefenacet in paddy field. J Environ Chem 11:785–792

    Article  CAS  Google Scholar 

  2. Food Safety Commission (2008) Evaluation report bromobutiode. Food Safety Commission, Tokyo

    Google Scholar 

  3. García-Valcárcel AI, Tadeo JL (1999) Influence of soil moisture on sorption and degradation of hexazinone and simazine in soil. J Agric Food Chem 47:3895–3900

    Article  Google Scholar 

  4. Ishii Y, Inao K, Kobara Y (2004) Dissipation of some herbicides in a flooded rice field and increase of water-holding times after application of herbicides. Bull Nation Inst Agro-Environ Sci 23:15–25

    CAS  Google Scholar 

  5. Isobe N, Matsuo M, Miyamoto J (1984) Comparative metabolism studies on N-(1-methyl-1-phenylethyl)-2-bromo-3,3-dimethylbutanamide (bromobutide) and its debromonated derivative in rats and mice. J Pestic Sci 9:105–115

    Article  CAS  Google Scholar 

  6. Iwashita M, Maeda T, Hori T, Asada T, Oikawa K, Kawata K (2008) Decrease of 4,5,6,7-tetrachlorophthalide in paddy field soil after aerial application. Bull Environ Contam Toxicol 81:383–386

    Article  CAS  Google Scholar 

  7. Kanazawa J (1996) Environmental character and toxicity data of pesticides. Godo-shuppan, Tokyo

    Google Scholar 

  8. Kawata K, Asada T, Oikawa K, Tanabe A (2005) Multiresidue determination of pesticides in sediment by ultrasonically assisted extraction and gas chromatography/mass spectrometry. J AOAC Int 88:1440–1451

    CAS  Google Scholar 

  9. Mine A (1987) Mode of action of bentazon and bromobutide in relation to the control of perennial paddy weeds. J Weed Sci Technol 32:78–84

    Article  CAS  Google Scholar 

  10. Morohashi M, Nagasawa S, Enya N, Suzuki K, Kose T, Kawata K (2012) Behavior of bromobutide in paddy water and soil after application. Bull Environ Contam Toxicol 88:521–525

    Article  CAS  Google Scholar 

  11. Qin S, Gan J, Liu W, Becker JO (2004) Degradation and adsorption of fosthiazate in soil. J Agric Food Chem 52:6239–6242

    Article  CAS  Google Scholar 

  12. Takahashi N, Mikami N, Yamada H, Miyamoto J (1985) Photodegradation of the herbicide bromobutide in water. J Pestic Sci 10:247–256

    Article  CAS  Google Scholar 

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Correspondence to Kuniaki Kawata.

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Morohashi, M., Nagasawa, S., Enya, N. et al. Decrease of Herbicide Bromobutide and its Debromo Metabolite in Paddy Field Soil during 24 weeks After Application. Bull Environ Contam Toxicol 89, 176–180 (2012). https://doi.org/10.1007/s00128-012-0625-8

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Keywords

  • Herbicide
  • Metabolite
  • Paddy field
  • Soil
  • Half-life