Diquat

diquat dibromideReglone
Diquat is a contact herbicide that produces desiccation and defoliation most often available as the dibromide, diquat dibromide.wikipedia
30 Related Articles

Herbicide

herbicidesherbicidalweed killer
Diquat is a contact herbicide that produces desiccation and defoliation most often available as the dibromide, diquat dibromide.
Photosystem I inhibitors steal electrons from the normal pathway through FeS to Fdx to NADP + leading to direct discharge of electrons on oxygen. As a result, reactive oxygen species are produced and oxidation reactions in excess of those normally tolerated by the cell occur, leading to plant death. Bipyridinium herbicides (such as diquat and paraquat) inhibit the FeS to Fdx step of that chain, while diphenyl ether herbicides (such as nitrofen, nitrofluorfen, and acifluorfen) inhibit the Fdx to NADP + step.

Crop desiccation

crop desiccant
It has been used in pre-harvest crop desiccation.
Herbicides used include glyphosate, diquat and glufosinate.

Pyridine

pyridylpyridinespy
Pyridine is oxidatively coupled to 2,2′-bipyridine over a heated Raney nickel catalyst.
The main use of pyridine is as a precursor to the herbicides paraquat and diquat.

Desiccation

desiccateddesiccatedesiccating
Diquat is a contact herbicide that produces desiccation and defoliation most often available as the dibromide, diquat dibromide.

Defoliant

defoliationdefoliantsdefoliate
Diquat is a contact herbicide that produces desiccation and defoliation most often available as the dibromide, diquat dibromide.

Glyphosate

Roundupglycosphateglyphosates
Brand names for this formulation include Aquacide, Dextrone, Preeglone, Deiquat, Spectracide, Detrone, Reglone, Reglon, Reglox, Tribune, Ortho-Diquat, Weedtrine-D, Weedol 2, and in combination with glyphosate, Resolva.

2,2'-Bipyridine

2,2′-bipyridinebipyridinebipy
Pyridine is oxidatively coupled to 2,2′-bipyridine over a heated Raney nickel catalyst.

Raney nickel

catalyst for hydrogenationspongy nickel
Pyridine is oxidatively coupled to 2,2′-bipyridine over a heated Raney nickel catalyst.

1,2-Dibromoethane

ethylene dibromideEDBEthylene bromide
The ethylene bridge is formed by the reaction with 1,2-dibromoethane:

Paraquat

methyl viologenparaquat dichlorideparaquat intoxication
* Paraquat

Myriophyllum

milfoilwater milfoilwatermilfoil
The widespread invasive Eurasian watermilfoil (M. spicatum) is often controlled with herbicide containing diquat dibromide.

Fine chemical

fine chemicalsspecialty chemicalSpecialty chemicals
Pyridine derivatives are found in both well-known Diquat and Chlorpyrifos herbicides, and in modern nicotinoid insecticides, such as Imidacloprid.

Glyphosate-based herbicides

glyphosate formulationglyphosate-based herbicide
Glyphosate-based herbicides were initially used in a similar way to paraquat and diquat, as non-selective herbicides.

Paraquat murders

Paraquat murders" killer
All the beverages were poisoned with the herbicide paraquat except for one which was poisoned with diquat.

Viologen

viologensextended viologensmethylviologen
Diquat is an isomer of viologens, being derived from 2,2'-bipyridine (instead of the 4,4'-isomer).

Industrial Bio-Test Laboratories

Industrial BioTest Labs
Agriculture Canada banned use of Reglone until further safety testing could be conducted and evaluated by Health and Welfare Canada, though application of the chemical continued illegally on a significant majority of lentils produced.

Superoxide dismutase

SODSOD1orgotein
Knockout mice of any SOD enzyme are more sensitive to the lethal effects of superoxide-generating compounds, such as paraquat and diquat (herbicides).

Bipyridine

dipyridine2,2′-bypyridylbipyridinium
2,2′-Bipyridine is used in the manufacture of diquat.

C12H12N2

Diquat (C 12 H 12 N 2 2+ )

Hepatotoxin

hepatic
allyl alcohol, amiodarone, Aroclor 1254, arsenic, carbamazepine, carbon tetrachloride, diethylnitrosamine, dimethylformamide, diquat, etoposide, indomethacin, methapyrilene, methotrexate, monocrotaline, and 3-methylcholanthrene.

Roundup (herbicide)

Roundupround-upRoundup ready crops
It was initially used in a similar way to paraquat and diquat, as a non-selective herbicide.

Agriculture in Thailand

agricultureagricultural sectorThai agricultural economics
It is sold under various trade names: Crisquat, Cyclone, Dextrone, Gramoxone Extra, Herbaxone, Ortho Weed and Spot Killer, and Sweep.

Orellanine

orellanin
The herbicides paraquat and diquat are toxic not only to plants, but also to humans and livestock.

Salvinia molesta

giant salviniaSalvina
Other chemicals such as hexazinone and diquat and double-chelated copper are used together to kill S. molesta.