Variables: electric_conductivity Substances: 2-4-D (OVSKIKFHRZPJSS-UHFFFAOYSA-N) 5-Methyl-Benzotriazole (LRUDIIUSNGCQKF-UHFFFAOYSA-N) Acetochlor-OXA (OTKTUNJJKYTOFF-UHFFFAOYSA-N) Keywords: monitoring