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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]
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]
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 ...
The ruling bars farmers from spraying dicamba products in the upcoming growing season unless the EPA allows them to use stocks of the herbicide that have already been shipped, said Meredith ...
The kill rate of bees in a single bee hive can be classified as: [19] < 100 bees per day – normal die off rate 200–400 bees per day – low kill 500–900 bees per day – moderate kill 1000+ bees per day – high kill
A federal judge on Tuesday ordered U.S. health agencies to restore websites that they abruptly took offline in response to an executive order by President Donald Trump telling them to scrub ...
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.
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