“Tolvera herbicide, powered by tolpyralate, an HPPD inhibitor offers growers tank-mix flexibility with excellent control of many challenging weeds, including Russian thistle, waterhemp, green and yellow foxtail, barnyardgrass and all common herbicide-resistant biotypes of kochia,” says Matthew Pederson, retail strategic account manager, Corteva Agriscience. “Tolvera herbicide will be the best option for a lot of cereal growers to control those broadleaf and grass weeds across their farms.”
Wheat research trials conducted in 2024 at North Dakota State University (NDSU) documented the high efficacy of Tolvera® herbicide and demonstrated the importance of application timing. Getting control of resistant foxtail and resistant kochia early, when they are under 3 inches in height, rather than later, is important. The trials also confirmed Group 1 and Group 2 herbicides were basically ineffective on many foxtail populations.
“NDSU and other universities have conducted extensive work with Tolvera herbicide and have seen it perform well for multiple years,” Pederson says. “Growers should embrace this new and novel herbicide for not only its effectiveness to control tough weeds but also because of the much shorter crop rotation timing intervals it affords other popular economic crops often rotated to in these regions — and that is critically important from a profitability potential standpoint.”
Farmers wanting to plant lentils or chickpeas after wheat, durum or barley have not been able to use an HPPD because of herbicide carryover concerns. With a nine-month plant-back option to other commodities next season, Tolvera herbicide helps farmers keep their rotation options open long-term.
“A farmer will be able to apply Tolvera herbicide in late May or early June and, by the next spring, not be worried about herbicide carryover,” Pederson says. “Many factors influence crop rotation decisions farmers make, but those decisions will not be restricted thanks to the flexibility in rotational crops and advantageous plant-back intervals Tolvera herbicide gives them.”
Additional Crop Flexibility, Weed Resistance Management
Crop flexibility may be viewed from other perspectives, including making applications at specific crop growth stages. Tolvera® herbicide has the flexibility to be applied from the one-leaf to jointing stage in wheat, durum and barley.
“It’s a great tank-mix partner with a number of other herbicides, as well as insecticides and fungicides,” Pederson says. “That tank-mix flexibility lends itself well to farmers who want to apply multiple products in one pass across their farms — which can obviously save time during the growing season.”
That tank-mix flexibility directly supports a farmer’s herbicide resistance stewardship efforts thanks to the new active ingredient in Tolvera herbicide, tolpyralate, a Group 27, that can be mixed with other herbicides to broaden weed spectrum control.
From a grass control perspective, this will be the first HPPD product specifically targeting barnyardgrass and foxtail grass in cereals. That places Tolvera herbicide in a preeminent position to be a solution for farmers across growing regions with resistance issues to those two grasses.
“When you look across North Dakota, Minnesota and over to the Pacific Northwest, there are six to 10 crops that could be in a farmer’s rotation to help them capitalize on specialty markets. This year, I know many of them will monitor markets, weigh their options and count on Tolvera herbicide to lock in that extended flexibility in crop rotation and weed control,” Pederson concludes.
Log on to Corteva.us/Solutions or visit with your Corteva Agriscience sales representative to learn more about Tolvera herbicide and the entire portfolio of Corteva Agriscience crop protection solutions.
Tolvera® is not registered for sale or use in all states. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Always read and follow label directions.
