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  11. Persistence And Degradation Of Tembotrione In Loamy Soil: Effect Of Various Organic Amendments, Moisture Regimes And Temperatures

Persistence and degradation of tembotrione in loamy soil: Effect of various organic amendments, moisture regimes and temperatures

Debabrata Ghoshal1,2, Mahima Dixit3, Neethu Narayanan1

  • 1Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, India.

Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
|September 17, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

Tembotrione herbicide dissipation in soil is influenced by temperature, moisture, and organic amendments like vermicompost. Higher temperatures and moisture accelerate tembotrione degradation, reducing its persistence.

Area of Science:

  • Environmental Chemistry
  • Soil Science
  • Agrochemicals

Background:

  • Tembotrione is a triketone herbicide used in maize cultivation.
  • Understanding herbicide persistence and degradation is crucial for environmental safety and agricultural practices.

Purpose of the Study:

  • To investigate the persistence and degradation kinetics of tembotrione in loamy soil.
  • To evaluate the impact of organic amendments, moisture, and temperature on tembotrione dissipation.

Main Methods:

  • Soil samples from a maize field were analyzed for tembotrione and its metabolites (TCMBA, M5) using modified QuEChERS and LC-MS/MS.
  • Experiments varied organic amendments, moisture levels, and temperatures to assess their effects on herbicide dissipation.

Main Results:

Keywords:
TCMBATembotrione degradationamendmentsmoisture

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  • Tembotrione dissipation ranged from 85.55% to 98.53% within 90 days across treatments.
  • Dissipation increased with higher soil temperature and moisture; vermicompost showed the highest dissipation rate.
  • Tembotrione half-life varied from 15.7 days at 35°C to 33 days under air-dry conditions.

Conclusions:

  • Tembotrione persistence is negatively correlated with soil organic carbon, moisture, and temperature.
  • Soil microbial biomass carbon positively correlated with tembotrione degradation.
  • Environmental factors significantly influence tembotrione's fate in soil ecosystems.
soil microbial biomass
temperatures