Leaching behaviour of metsulfuron-methyl

Tandon, Shishir; Mehra, Pooja; Sand, N. K.

doi:10.5958/0974-8164.2016.00058.7

Cited by 5 publications

(3 citation statements)

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“…The above laboratory experiments were conducted using the same type of soil (Bernam soil series). A similar relationship between pH and mobility has been reported for metsulfuron-methyl [4,23,35].…”

Section: Discussionsupporting

confidence: 82%

“…The degradation and leaching potential of metsulfuron-methyl have been extensively studied in various types of soils [21][22][23]. The increased use of metsulfuron-methyl has triggered concerns over the possibility of contamination by the herbicide, particularly its leaching potential to ground water.…”

Section: Introductionmentioning

confidence: 99%

“…The increased use of metsulfuron-methyl has triggered concerns over the possibility of contamination by the herbicide, particularly its leaching potential to ground water. Recent study has shown that under simulated rainfall, metsulfuron-methyl residue can be observed at 30-35 cm column depth and is present in the leachate after seven days of application [23]. Based on the K OC (soil adsorption coefficient) values for a number of Argentinean soils, Azcarate et al [21] found that the half-life (t 1/2 ) for metsulfuron-methyl was more than 3 to 15 days, and that of sulfometuron-methyl was more than 3 to 24 days, which would classify them as the leachers in all soil horizons.…”

Section: Introductionmentioning

confidence: 99%

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Residue and Dissipation Kinetics of Metsulfuron-Methyl Herbicide in Soil: A Field Assessment at an Oil Palm Plantation

2020

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A field trial experiment was conducted to investigate the degradation of metsulfuron-methyl at two application dosages, 15 g a.i/ha and 30 g a.i/ha, at an oil palm plantation. Soil samples were collected at ‒1, 0, 1, 3, 7, 14, and 21 days after treatment (DAT) at the following depths: 0–10, 10–20, 20–30, 30–40, and 40–50 cm. The results showed rapid degradation of metsulfuron-methyl in the soil, with calculated half-life (t½) values ranging from 6.3 and 7.9 days. The rates of degradation of metsulfuron-methyl followed first-order reaction kinetics (R2 = 0.91–0.92). At the spray dosage of 15 g a.i/ha, metsulfuron-methyl residue was detected at up to 20–30 cm soil depth, at 3.56% to 1.78% at 3 and 7 DAT, respectively. Doubling the dosage to 30 g a.i/ha increased the metsulfuron-methyl residue in up to 30–40 cm soil depth at 3, 7, and 14 DAT, with concentrations ranging from 1.90% to 1.74%. These findings suggest that metsulfuron-methyl has a low impact on the accumulation of the residues in the soil at application dosages of 15 g a.i/ha and 30 g a.i/ha, due to rapid degradation, and the half-life was found to be 6.3 to 7.9 days.

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%