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Syngenta unveils major breakthrough in fight against resistant grass weeds
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Tuesday, 24 June, 2025, 13 : 00 PM [IST]
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Basel, Switzerland
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Weeds compete with crops for resources such as water, nutrients and sunlight, and lower yields in major crops by as much as 43% (Savary, 2019). The evolution of herbicide resistance in many weed
species poses a serious and growing threat to many farmers around the world, limiting yield and – in extreme cases – destroying the value of the land. Innovation in herbicide technologies has resurged in importance and urgency, reflecting the value of such technologies in controlling weeds and improving the sustainability of farming operations.
Syngenta, a global leader in agricultural innovation, announced that its latest weed control solution, metproxybicyclone, has been recognised under a new chemical subclass of herbicides. The decision, by the Herbicide Resistance Action Committee (HRAC) and the Weed Science Society of America (WSSA), reflects metproxybicyclone’s distinction as the fourth generation of ACCase-inhibitors, an important class of herbicides. The third generation of ACCase-inhibitors, represented by Syngenta’s leading molecule pinoxaden, was launched in 2006; the nearly two-decade long gap in ACCase subclass innovation reflects in part the extreme challenges in finding new, effective and safe solutions.
Camilla Corsi, Syngenta’s global head of research and development, said, “Herbicide resistance has been officially reported in 75 countries and affects farmers of more than 100 crops; of the 273 weed species afflicted, 40 percent are grass weeds. At Syngenta, we push the boundaries of crop protection science to deliver solutions farmers need. Years ago, our scientists foresaw that certain grass weeds in Argentina and Brazil would likely evolve resistance to existing herbicides, and since then we’ve raced to bring a solution to market – in time to support soybean and cotton farmers who now confront this challenge.”
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