Laboratory assessment of 14c-phenyl metsulfuron-methyl degradation in an oil palm plantation soil

Ismail Sahid, E. K. Ooi, A. M. Tayeb

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The 14C-phenyl metsulfuron-methyl is a selective systemic sulfonylurea herbicide. Degradation studies in soils are essential for the evaluation of the persistence of pesticides and their breakdown products. The objective of this study was to investigate the degradation of metsulfuron-methyl in an oil palm plantation soil under laboratory conditions. The soil used was both sterilised and non-sterilised soil in order to observe the involvement of soil microbes. The estimated DT50 and DT90 values of metsulfuron-methyl in a nonsterile system were approximately 13 and 44 days, whereas in sterilised soil, the DT50 and DT90 were 31 and 70 days, respectively. The principal degradation product after 60 days is CO2. The higher cumulative 14CO2 in 14C-phenyl in the non-sterilised soil compared to that in the sterile system suggests that biological degradation by soil micro-organisms significantly contribute to the dissipation of the compound. In some the major routes of degradation are O-demethylation, sulfonylurea bridge cleavage and triazine ringopened. In vitro study in order to identify the microbes involve in the degradation of the compound should be carried out in the future study.

Original languageEnglish
Pages (from-to)403-416
Number of pages14
JournalJournal of Oil Palm Research
Volume27
Issue number4
Publication statusPublished - 1 Dec 2015

Fingerprint

metsulfuron
Palm oil
Elaeis guineensis
Oils
Soil
plantations
Soils
Degradation
degradation
soil
pesticide persistence
microorganisms
sulfonylurea herbicides
sulfonylureas
triazines
Triazines
metsulfuron methyl
soil microorganisms
Herbicides
biodegradation

Keywords

  • Degradation
  • DT50
  • Metsulfuron-methyl
  • Oil palm soil

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Food Science
  • Renewable Energy, Sustainability and the Environment
  • Biomaterials

Cite this

Laboratory assessment of 14c-phenyl metsulfuron-methyl degradation in an oil palm plantation soil. / Sahid, Ismail; Ooi, E. K.; Tayeb, A. M.

In: Journal of Oil Palm Research, Vol. 27, No. 4, 01.12.2015, p. 403-416.

Research output: Contribution to journalArticle

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