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Dicamba is toxic to conifer species but is in general less toxic to grasses. [2] Dicamba is a synthetic auxin that functions by increasing plant growth rate, leading to senescence and cell death. [2] [11] The growth regulating properties of dicamba were first discovered by Zimmerman and Hitchcock in 1942. [12]
Chemical structure of Dicamba, 3,6-dichloro-2-methoxybenzoic acid. Dicamba drift is a particular problem, as has been recognized since at least 1979. [20] The effects have been noted for many crops: grapes, tomatoes, soybeans. [21] [22] In 2017, Dicamba-resistant soybeans and cotton were approved for use in the US. This new technology worsened ...
From the late 1970s to 2016, there was a 100-fold increase in the frequency and volume of application of glyphosate-based herbicides (GBHs) worldwide, with further increases expected in the future. Glyphosate is absorbed through foliage, and minimally through roots, and from there translocated to growing points.
Bayer soybeans that resist dicamba-based herbicide are the No. 2-most planted soybeans in the United States, though not all are sprayed with the chemical.
In 2015, Monsanto released crop seed varieties resistant to both dicamba and glyphosate, allowing for use of a greater variety of herbicides on fields without harming the crops. By 2020, five years after the release of dicamba-resistant seed, the first example of dicamba-resistant Palmer amaranth was found in one location. [74]
The sports streaming game has a new player: DirecTV. The TV provider is launching MySports, a sports subscription streaming service with 40 channels including ESPN, Fox Sports, and the NFL Network.
The other auxin now used in comparable amounts to 2,4-D is dicamba, where the 2019 figure was 30,000,000 pounds (14,000,000 kg). [7] It is a benzoic acid rather than a phenoxyacetic acid whose use has grown rapidly since 2016 as crops genetically modified to be resistant to it have been cultivated.
Wastewater data and reports from the Centers of Disease Control and Prevention have shown a significant spike in norovirus in the last few weeks, with rates far exceeding those of the past few years.