meaning diquat
Freebase (0.00 / 0 votes) Rate this definition: Diquat. Diquat is a contact herbicide that produces desiccation and defoliation most often available as the dibromide, diquat dibromide. Brand names for this formulation include Aquacide, Dextrone, Preeglone, Deiquat, Detrone, Reglone, Reglon, Reglox, Ortho-Diquat, Weedtrine-D, Weedol 2 and, in combination with glyphosate, Resolva.