U.S. EPA proposes to register new herbicide active ingredient Glufosinate-P
On May 9, 2024, the U.S. Environmental Protection Agency (EPA) released for public comment its proposed registration decision for pesticide products containing the new active ingredient Glufosinate-P to control weeds in non-tolerant and Glufosinate-resistant corn, sweet corn, soybean, cotton, and canola. The public comment period will be open for 30 days, closing on June 8, 2024. In addition to its proposed registration decision, EPA has also released its draft biological evaluation for the pesticide under the Endangered Species Act (ESA).
This action complies with EPA’s obligations under the ESA and furthers the goals outlined in EPA’s April 2022 ESA Workplan by identifying potential effects to listed species and proposing protective measures prior to new conventional active ingredient pesticide registration. EPA is proposing several mitigation measures to reduce exposure to non-target species. Those measures are expected to minimize impacts to federally endangered and threatened (listed) species and their designated critical habitats. Glufosinate-P is the fourth new conventional active ingredient EPA has proposed to register that complies with the ESA.
Background on Glufosinate-P
Glufosinate-P, an isomer of the currently registered herbicide Glufosinate, is a non-selective herbicide that kills plants by causing excess ammonia build-up and directly inhibiting photosynthesis.
EPA received applications for both Glufosinate-P and its ammonium salt, Glufosinate-P ammonium. Glufosinate-P ammonium and Glufosinate-P will generally exist in the same form in the environment and share the same herbicidal properties. Therefore, the Agency considers Glufosinate-P to be the active ingredient for both forms under the proposed registration decision. EPA is proposing to register several Glufosinate-P and Glufosinate-P-ammonium products for manufacturing and commercial distribution.
Glufosinate-P has similar benefits and uses to the currently registered Glufosinate herbicide products. These benefits include flexible application timing, which allows for postemergence weed control over the top of Glufosinate-tolerant crops and for early season use in non-tolerant canola, corn, cotton, and soybean. The proposed Glufosinate-P products result in less chemicals entering the environment compared to the currently registered Glufosinate. Glufosinate-P only contains the herbicidally active part of Glufosinate, so Glufosinate-P applications require approximately half the application rate compared to Glufosinate.
Results of EPA’s Risk Assessments
Before issuing this proposed registration decision, EPA evaluated the potential hazardous effects and exposures to human health and the environment, as required by the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). Based on the Agency’s human health risk assessment, the proposed uses of Glufosinate-P have no human health risks. However, EPA’s ecological draft risk assessment identified risks for terrestrial and aquatic plants and chronic risk to mammals, bees, and non-bee terrestrial invertebrates that forage in treated fields and may be exposed to residues on food items exposed to off-site spray drift.
Proposed Mitigations
To reduce impacts on non-target species, the EPA has proposed a range of mitigation measures. With these proposed mitigations in place, EPA’s draft biological evaluation predicts that the use of Glufosinate-P will not result in a likelihood of future jeopardy for the survival of any listed species, or a likelihood of adverse modification for any designated critical habitat.
And now, King Quenson provides farmers an formulation of Glufosinate-P, King's Proud.
Feature and benefits of King's Proud:
Multiplied Activity
Broad-Spectrum Weeds Control
Fast-Acting and Long-Lasting Protection
Safer for Crops and Environmental Friendly
1. Multiplied Activity
The herbicidal activity of King's Proud is 1.5 to 2 times that of the conventional Glufosinate-ammonium. Therefore the dosage of King's Proud can be reduced 50% (e.g. 20% SL, 1.5-2.25 L/ha), which can significantly reduce the cost of technical materials, adjuvants, packaging and transportation. The direct benefit to farmers is that the actual cost of using King's Proud is not only much lower than conventional Glufosinate-ammonium, it is even at the same cost level as Glyphosate.
2. Broad-Spectrum Weeds Control
King's Proud can effectively control most of annual and perennial broad-leaved weeds and grasses, especially to Glyphosate-resistant weeds such as Goosegrass (Eleusine indica), Horseweed (Erigeron canadensis) and etc.
In addition, there have been no reports of weed resistance developed to King's Proud.
3. Fast-Acting and Long-Lasting Protection
After using King's Proud, the treated weeds stop growing within the first day of application. The visual symptoms appear in 2 to 3 days, include yellowing, chlorosis, wilting, scorching, necrosis and etc. And the complete death of the weeds usually occurs in 7 to 10 days. If the temperature is lower to 15-20°C the complete death will occur in 15 to 20 days.
Meanwhile, King's Proud provides long-lasting protection for 25 to 30 days for sensitive weeds and 10 to 20 days for moderate sensitive weeds.
4. Safer for Crops and Environmental Friendly
King's Proud degrades rapidly in the soil, so it does not harm the roots or the soil. As King's Proud only affects the parts of the plant where it is applied, farmers can rely on it to guarantee a high level of crop safety.
Meanwhile, King's Proud is more environmental friendly as it only contains the active L-glufosinate, resulting in a 50% reduction in the release of inactive isomer into the soil.
If you have a need, you can contact us at any time:
Email: info@kingquenson.com
Tel: 86-755-86612760, 86-755-86612793
Prev: 2023 China Fertilizer Registration Analysis
Next: Analysis of Pesticide Registration in China, the United States, and Europe
