Grass Weed Control Breakthrough Syngenta Launches VIRESTINA™ Technology Globally
Syngenta, a global leader in agricultural innovation, has announced the commercial launch of VIRESTINA™ technology, a major advancement in crop protection that marks the first new selective herbicide solution for controlling resistant grass weeds in soybean and cotton crops in nearly four decades. The innovation represents a significant milestone in the ongoing battle against herbicide-resistant weeds, one of the most pressing challenges facing modern agriculture.
The newly introduced VIRESTINA™ technology, powered by the active ingredient metproxybicyclone, has received its first regulatory approval in Argentina, making it the initial market where farmers will gain access to this cutting-edge solution. Syngenta has also outlined plans to expand the availability of the technology to other major agricultural regions, including Brazil, Australia, the United States, and Canada, reflecting the global relevance of the problem it addresses.
Argentina’s selection as the launch market underscores its prominence as one of the world’s leading agricultural producers and innovators. As the third-largest soybean producer globally, the country has consistently demonstrated a willingness to adopt advanced technologies that enhance productivity and sustainability. Soybeans themselves play a crucial role in global food systems, serving as a rich source of essential amino acids and forming a cornerstone of high-protein animal feed production.
The introduction of VIRESTINA™ technology comes at a critical time for farmers worldwide, who are increasingly grappling with the spread of herbicide-resistant weeds. These weeds have evolved the ability to survive conventional herbicide applications, allowing them to persist in fields and compete aggressively with crops for vital resources such as nutrients, sunlight, and water. Beyond direct competition, resistant weeds can also serve as a “green bridge,” harboring pests and pathogens—including viruses, fungi, and bacteria—that further threaten crop health and yield.
The scale of the problem is substantial and growing. Herbicide resistance has now been documented in 75 countries, affecting more than 100 different crops. Among the 273 weed species known to exhibit resistance, grass weeds account for approximately 40 percent, making them one of the most difficult and economically damaging categories for growers to manage. The increasing prevalence of resistance, combined with the limited introduction of new herbicide modes of action over recent decades, has left farmers with a shrinking set of effective tools.
VIRESTINA™ technology aims to address this gap by offering a highly effective solution specifically designed to control resistant grass weeds in key crops such as soybean and cotton. It demonstrates strong performance against weeds that have developed resistance to widely used herbicides, including glyphosate and clethodim. Importantly, the technology is selective, meaning it can be applied directly over crops without causing damage, thereby simplifying weed management strategies for farmers.
In addition to its efficacy, VIRESTINA™ technology has been engineered with sustainability in mind. The herbicide breaks down rapidly in the soil, minimizing long-term environmental impact and supporting safer agricultural practices. This favorable environmental profile enables farmers to maintain greater flexibility in crop rotations and the use of cover crops—both of which are essential components of regenerative and sustainable farming systems.
Another key benefit of the technology is its potential to reduce the need for multiple mechanical weed control operations. By decreasing reliance on repeated passes of heavy machinery, farmers can lower soil compaction, preserve soil health, and reduce greenhouse gas emissions associated with fuel use. These advantages align with broader industry efforts to enhance sustainability while maintaining high levels of productivity.
The development of VIRESTINA™ technology highlights Syngenta’s commitment to accelerating innovation in response to emerging agricultural challenges. Scientists at the Jealott’s Hill International Research Centre leveraged advanced predictive science techniques to bring the product to market in just 10 years—significantly faster than the typical 12 to 14 years required for new agricultural technologies. This accelerated timeline reflects both technological advancements and a focused effort to anticipate future challenges in weed management.
According to Ioana Tudor, Syngenta’s Global Head of Crop Protection Marketing, the launch of VIRESTINA™ technology demonstrates the company’s ability to identify critical issues well in advance and deliver timely solutions. She emphasized that innovation plays a central role in helping growers navigate complex and evolving challenges, and highlighted the company’s strong pipeline of next-generation technologies.
Indeed, VIRESTINA™ technology is part of a broader wave of innovation emerging from Syngenta’s research and development efforts. Over the next decade, the company plans to introduce at least 20 new proprietary solutions across advanced crop protection and agricultural biologicals. Its existing portfolio already includes several high-impact technologies, such as TYMIRIUM® for controlling nematodes and fungal diseases, PLINAZOLIN® for insect control, and ADEPIDYN® for managing fungal pathogens. These products are widely recognized for their effectiveness and sustainability benefits.
In parallel, Syngenta continues to expand its leadership in agricultural biologicals, offering a comprehensive range of biocontrol agents, biostimulants, and nutrient use efficiency solutions. The company is also investing heavily in artificial intelligence–driven digital tools and precision agriculture technologies, which enable farmers to make more informed decisions and optimize resource use.
VIRESTINA™ technology itself was developed using Syngenta’s deep expertise in ACCase-inhibitor herbicides, a foundational class of crop protection chemistry widely used in modern agriculture. As a fourth-generation innovation within this group, it has been specifically engineered to overcome resistance challenges associated with both older ACCase herbicides and herbicides from other modes of action. This makes it a powerful addition to integrated weed management strategies, helping farmers stay ahead of evolving resistance patterns.
Overall, the global launch of VIRESTINA™ technology represents a significant step forward in addressing one of agriculture’s most persistent and costly problems. By combining high efficacy, crop safety, and environmental sustainability, Syngenta is providing farmers with a much-needed tool to protect yields, preserve farmland value, and support the long-term resilience of agricultural systems worldwide.
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