: a powerful herbicide and plant desiccant C12H12Br2N2 used especially to control aquatic weeds and to desiccate aerial plant parts (as of potatoes) before harvesting
Examples of diquat in a Sentence
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The strategy the group would use would include releasing two herbicides — diquat and fluoridone — into the lakes and maintaining high enough concentrations for long enough to kill the elodea.
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Author: Elizabeth Earl, Anchorage Daily News, 20 June 2019
After the use of the chemical diquat, the duckweed turns brown and sinks to the bottom, which can nourish unkilled weeds, effectively making matters worse.
—Hector Argüello Canals, National Geographic, 17 June 2016
Duckweed and watermeal are just two types of weeds that most pond owners seek to control with chemicals such as diquat.
—Hector Argüello Canals, National Geographic, 17 June 2016
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Author: Elizabeth Earl, Anchorage Daily News, 20 June 2019
After the use of the chemical diquat, the duckweed turns brown and sinks to the bottom, which can nourish unkilled weeds, effectively making matters worse.
—Hector Argüello Canals, National Geographic, 17 June 2016
Duckweed and watermeal are just two types of weeds that most pond owners seek to control with chemicals such as diquat.
—Hector Argüello Canals, National Geographic, 17 June 2016
Cite this Entry
“Diquat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diquat. Accessed 17 Jul. 2025.
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