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Behavior of pre-mix formulation of imazethapyr and imazamox herbicides in two different soils

  • Dimple Rani
  • Anil Duhan
  • Satbir Singh Punia
  • Dharam Bir Yadav
  • Saroj Duhan
Article
  • 21 Downloads

Abstract

Imidazolinone group herbicides are known for longer persistence in soil. Therefore, a laboratory study was performed to evaluate the persistence of pre-mix formulation of two imidazolinone herbicides—imazethapyr and imazamox in clay and sandy loam soils. Herbicide formulation was applied at 70 and 140 g a.i. ha−1 equivalent to recommended doses in legumes. For achieving efficient sample preparation, three methods namely ultrasonic-assisted extraction (UAE), matrix solid phase dispersion (MSPD), and solid phase extraction (SPE) were optimized. MSPD gave better recoveries (85.22 to 96.00%) over SPE (80.10 to 84.78%) and UAE (56.44 to 66.20%). Residues were estimated using gas chromatography tandem mass spectrometry (GC-MS/MS) which is previously not reported in open literature. Dissipation followed first-order kinetics and half-life period of 23.5 to 43.3 days in clay loam and 19.6 to 39.8 days in sandy loam soil. The results revealed the persistent nature of pre-mix formulation of both herbicides as only 64.2 to 86.6% residues dissipated after 90 days of application in both soils.

Keywords

Imazethapyr Imazamox Soil Residues GC-MS/MS 

Notes

Acknowledgements

The authors are thankful to Indian Council of Agricultural Research (ICAR), New Delhi, and Directorate of Weed Research, Jabalpur, India, for providing necessary facilities during the study.

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • Dimple Rani
    • 1
  • Anil Duhan
    • 2
  • Satbir Singh Punia
    • 2
  • Dharam Bir Yadav
    • 2
  • Saroj Duhan
    • 2
  1. 1.Department of ChemistryChaudhary Charan Singh Haryana Agricultural UniversityHisarIndia
  2. 2.Agrochemicals Residues Testing Laboratory, Department of AgronomyChaudhary Charan Singh Haryana Agricultural UniversityHisarIndia

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