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"Identification of the weed will help you determine the timing of weed removal before flowering and seed production," says Teresa Watkins, host of syndicated iHeart garden radio show, Better Lawns ...
The glyphosate-based herbicide RoundUp (styled: Roundup) was developed in the 1970s by Monsanto. Glyphosate was first registered for use in the U.S. in 1974. [4] Glyphosate-based herbicides were initially used in a similar way to paraquat and diquat, as non-selective herbicides. Attempts were made to apply them to row crops, but problems with ...
In the United States, use of Roundup experienced rapid growth following the commercial introduction of a glyphosate-resistant soybean in 1996. [75] "Roundup Ready" became Monsanto's trademark for its patented line of crop seeds that are resistant to Roundup. Between 1990 and 1996 sales of Roundup increased around 20% per year. [76]
It was marketed as Roundup in 1971. [17] The development of glyphosate-resistant crop plants, it is now used very extensively for selective weed control in growing crops. The pairing of the herbicide with the resistant seed contributed to the consolidation of the seed and chemistry industry in the late 1990s.
Current Roundup Ready crops include soy, corn (maize), canola, [2] sugar beets, [3] cotton, and alfalfa, [4] with wheat [5] still under development. Additional information on Roundup Ready crops is available on the GM Crops List. [6] As of 2005, 87% of U.S. soybean fields were planted with glyphosate resistant varieties. [7] [8]
Faster growing weeds can be reduced by increased competition with eventual growth of perennials, shrubs and trees. Herbicides such as glyphosate are commonly used in place of tillage for seedbed preparation, which leads to more herbicide use in comparison to conventional tillage. Alternatives include winter cover crops, soil solarization, or ...