Corteva Field Day Highlights Weed Control, New Product Offering
August 25, 2026 For several years now, Corteva Agriscience has offered a range of products to help grower-customers with their weed control issues. And according to the company, more help is on the way, including a new herbicide for soybeans featuring a lower price point.
In late July, Corteva invited several guests to its annual Field Day at the company’s headquarters in Johnston, IA. Attendees of this event learned more about many of Corteva’s brand. This included spotlighting the 100-year anniversary of Pioneer Seed, an update on Brevant Seeds, and fungicides for the specialty crop marketplace.
Still, the majority of the news presented at the Field Day focused on Corteva’s line-up of herbicides for the row crop sectors, where resistant weeds have increasingly become a serious problem for growers. Indeed, according to the Weed Science Society of America, there are approximately 273 herbicide-resistant weed species in the world today. And this number keeps growing each and every year.
For row crop growers, said Ron Geis, Technical Field Agronomist, the No. 1 problem weed in the Midwest is waterhemp. This weed is particularly hard-to-control because of how it reproduces.
“Each leaf on a waterhemp plant has a growth point attached to it,” said Geis. “So, if I’m applying a foliar herbicide to control it, I have to kill every single growth point to have a dead plant. That’s hard to do with the growth points closer to the ground with the canopy in the way.”
For control, Geis recommended growers use a two-step approach. The first was to make sure the crop field was clean of weeds through the use of tillage or burndown application. The second step was to employ some kind of residual herbicide in conjunction with planting that can offer four to nine weeks of additional weed control.
In the Corteva portfolio, he highlighted Resicore REV as an option to achieve this result. A micro-encapsulated formulation of acetochlor, mesotrione, and clopyralid, Resicore REV can control more than 75 tough broadleaf and grass weeds, including resistant biotypes such as waterhemp, Palmer amaranth, marestail, and giant ragweed.
Important for growers, said Geis, Resicore REV is engineered to tank mix with liquid nitrogen and sulfur.
“Farmers want to do everything in their fields in one pass, but if sulfur makes up more than 20% of their tank mixes, almost no herbicide will mix with it properly,” he said. “But Resicore REV can work at a 50% sulfur inclusion rate, so that’s not a problem.”
The other big herbicide news from the Corteva Field Day involved the introduction of a new product for soybeans. As Geis pointed out, the company has enjoyed widespread success with its Enversa herbicide paired with its Enlist E3 soybean system. In fact, he claimed that Enlist E3 soybeans are the No. 1 selling soybean technology in the country today, with more than 1,700 qualified tank-mix partners.
To capitalize on this success, Corteva wanted to offer growers another option for weed control tied to this cropping system. The result of these efforts is a new product: Enclosa. Featuring a formulation of proprietary encapsulated acetochlor and cloransulam, Enclosa has obtained approval from the EPA and is now in the process of receiving state approvals.
According to Eric Scherder, National Agronomy Lead, Herbicides and Nitrogen Stabilizers, Enclosa can be used in preplant and preemergence applications to control 35 broadleaf and grasses such as Palmer amaranth, morningglory, lambsquarter, and ragweed. He added that one of the things that makes Enclosa unique is its formulation.
“This is a novel ZC product that takes two dissimilar products and puts them together,” said Scherder. “Growers increasingly want liquid formulations.”
The other key point of uniqueness for Enclosa is its price point.
“Enclosa isn’t meant to be a premium product, instead having a mid-tier price point,” he said. “That was done intentionally. We are not looking for Enclosa to control 100 different weeds vs. other products. This is meant to a cost-effective option for growers given the difficult economic conditions many of them are dealing with today.”
According to Scherder, initial sales of Enclosa are anticipated later in 2026 for use during the 2027 growing season.
“With Enclosa’s introduction, Corteva is building out something the company has already had great success with, our Enlist soybeans,” he said. “We are expanding that to our customers in an economical and efficient way.”
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