Herbaceous or Salix miyabeana 'SX64' narrow buffer strips as a means to minimize glyphosate and aminomethylphosphonic acid leaching from row crop fields

The Science of the Total Environment
Louise Hénault-EthierMichel Labrecque

Abstract

Glyphosate is the most widely used herbicide worldwide and is now frequently detected in surface waters of agricultural regions, notably in Quebec (Canada). Numerous legislations require vegetated riparian buffer strips (RBS) along agricultural streams. Quebec policy requires 3-meter-wide RBS. The present study evaluates the efficiency of narrow herbaceous and low- or high-density (33,333 and 55,556stumps/ha) willow, Salix miyabeana 'SX64', RBS, to minimize leaching of glyphosate and its main degradation product (AMPA) from agricultural fields to streams. Our study compared triplicate treatments of herbaceous and willow-planted RBS located in an organic-rich soil at Boisbriand (BB) and in a mineral soil at Saint-Roch-de-l'Achigan (SR). Runoff water was sampled with surface collectors and interstitial water was collected with 35cm or 70cm tension lysimeters. Potential efficiency of the RBS is reported as the percent reduction between edge-of-field and edge-of-stream concentrations in runoff and interstitial waters. Neither glyphosate nor AMPA in runoff were significantly intercepted by the RBS. After field herbicide spraying, glyphosate measured in SR surface soils (0-20cm) was on average 210μg·kg-1dw (range from undetected to ≤...Continue Reading

Citations

Nov 24, 2019·The Science of the Total Environment·Anne-Antonella SerraGwenola Gouesbet
Mar 17, 2021·Environmental Pollution·Yuan Guo, Zijian Li
Jul 28, 2020·The Science of the Total Environment·Anne-Antonella SerraCécile Sulmon
Nov 23, 2018·The Science of the Total Environment·Marcelo Pedrosa GomesBruno Francisco Sant'Anna-Santos
Jul 22, 2021·Ecological Applications : a Publication of the Ecological Society of America·Marie-Pier HébertGregor F Fussmann
Apr 7, 2020·Ecotoxicology and Environmental Safety·Marcelo Pedrosa GomesBruno Francisco Sant'Anna-Santos

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