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One major complication to the use of herbicides for weed control is the ability of plants to evolve herbicide resistance, rendering the herbicides ineffective against target plants. Out of 31 known herbicide modes of action, weeds have evolved resistance to 21. 268 plant species are known to have evolved herbicide resistance at least once. [59]
While the use of Roundup Ready crops has increased the usage of herbicides measured in pounds applied per acre, [9] it has also changed the herbicide use profile away from atrazine, metribuzin, and alachlor [citation needed] which are more likely to be present in run off water. [citation needed] An injunction in the case of Center for Food ...
As of 2011, herbicide-resistant GM corn was grown in 14 countries. [4] By 2012, 26 varieties of herbicide-resistant GM maize were authorised for import into the European Union, [5] but such imports remain controversial. [6] Cultivation of herbicide-resistant corn in the EU provides substantial farm-level benefits. [7]
The Enlist Weed Control System is an agricultural system that includes seeds for genetically modified crops that are resistant to Enlist (a broadleaf herbicide with two active agents, 2,4-Dichlorophenoxyacetic acid (2,4-D) and glyphosate) and the Enlist herbicide; spraying the herbicide will kill weeds but not the resulting crop.
Weeds resistant to multiple herbicide modes of action are also on the rise. [7] Before glyphosate, most herbicides would kill a limited number of weed species, forcing farmers to continually rotate their crops and herbicides to prevent resistance. Glyphosate disrupts the ability of most plants to construct new proteins.
This reduction in pesticide use has been ecologically beneficial, but benefits may be reduced by overuse. [4] Yield gains and pesticide reductions are larger for insect-resistant crops than for herbicide-tolerant crops. [5] Yield and profit gains are higher in developing countries than in developed countries. [3]
Bayer's crop science division is increasingly turning to artificial intelligence in its battle against crop killing weeds, the company told Reuters. Weeds are growing resistant to the herbicides ...
Farmers have manipulated plants and animals through selective breeding for decades of thousands of years in order to create desired traits. In the 20th century, a surge in technology resulted in an increase in agricultural biotechnology through the selection of traits like the increased yield, pest resistance, drought resistance, and herbicide resistance.
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