2,4-D


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

2,4-D

 
2,4-dichlorophenoxyacetic acid, a toxic chlorphenoxy herbicide; it is a component of agent orange.

2,4-D

Abbreviation for (2,4-dichlorophenoxy) acetic acid.
References in periodicals archive ?
The classification of the weed killer, 2,4-dichlorophenoxyacetic acid, was made by the WHO's International Agency for Research on Cancer (IARC).The IARC said it reviewed the latest scientific literature and decided to classify 2,4-D as "possibly carcinogenic to humans", a step below the more definitive "probably carcinogenic" category but two steps above the "probably not carcinogenic" category.
Fact Sheet: Maintaining Efficacy with Larger Droplets - New 2,4-D Application Requirements
Mixture of florasulam + 2,4-D + Asahi applied at the dose 3.75g a.i x [ha.sup.-1] + 180g a.i x [ha.sup.-1] + 0.6[dm.sup.3] x [ha.sup.-1] at the growth stage BBCH 30;
For the environment SHGO, in both years, pluvial precipitations occurred between the first and second herbicide applications, until the evaluation of treatment effects (Figure 1), which must have contributed to the better control of regrowth, especially in the treatment with the systemic herbicide 2,4-D. Herbicide efficiency to control plants originated from cotton stalk regrowth, as occurs for weeds, is determined among other factors by climate conditions, especially temperature, water content in the soil and relative air humidity (Cieslik et al., 2013; Matzenbacher et al., 2014).
The commercial product DMA 806 BR ([R]) DowElanco was used as the 2,4-D source.
Auxin (2,4-D) alone or combined with cytokinins, such as BAP, is widely used to stimulate callus formation, however, the concentration of these regulators should be defined for each species (Castro, Braga, Souza, Coimbra, & Chagas, 2016).
Different explants from Jaunpuri and Jhalri cultivars responded differently to BAP and 2,4-D (different concentrations) in MS medium in in vitro cultures to produce callus cultures.
Classifying 2,4-D as a cancer risk to humans ignores extensive research and analysis conducted by health authorities worldwide, including the United Nations WHO/FAO Joint Meeting on Pesticide Residue.
Because both of the concentrations of 2,4-D tested produced similar effects, we recommend the use of 4.52 [micro]M, as the lower dose would be more cost effective.