Chemical: Chlorsulfuron
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November 2022: Loddon River, Kerang. Pesticides: Atrazine, Simazine
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2015 August: Oodlawirra Reservoir. Pesticide: Chlorsulfuron
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2011 – 2023: Middle River, Kangaroo Island. Pesticides detected: MCPA, Triclopyr, Chlorosulfuron, Simazine
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2011 – 2024: Gumeracha Weir 2.6km upstream. Pesticides detected: MCPA, Triclopyr, Dicamba, Chlorthal-Dimethyl, Chlorsulfuron, Metsulfuron Methyl, Picloram