As herbicide resistance continues to develop, growers must think about the current year’s herbicide program as well as the next two, three or five years in the future.
New herbicide active ingredients and differing modes of action are just two ways to stop weed pressures in their tracks. UPL is listening to grower needs and is committed to finding ways to control broadleaf weeds.
“Listening and spending time with growers in the field helps us at UPL to understand what growers’ needs are and build the right products that can help them,” says James Coday, UPL Strategic Marketing Manager. “One of UPL’s strengths is in formulation and we have access to a large number of active ingredients. Once we understand the problem, we can work with our technical services team to create a solution that helps growers in the field.”
Looking Closer at Herbicide Resistance
UPL’s OpenAg® approach includes identifying new controls as well as improving and enhancing current, EPA-approved active ingredients. With the assistance of agronomists, scientists and researchers, PREVIEW™ 2.1 SC herbicide was specifically designed to control resistant weed species, such as Palmer amaranth, pigweed and waterhemp in soybean fields.
The unique, liquid 2:1 ratio of metribuzin and sulfentrazone in PREVIEW 2.1 SC herbicide is extremely beneficial for broadleaf weed control. The ingredient metribuzin has been demonstrated to be effective against resistant weeds. However, studies show that combining metribuzin with one or more additional effective ingredients can increase it’s effectiveness, which is why PREVIEW 2.1 SC herbicide has been formulated with two concentrated active ingredients.
“PREVIEW 2.1 SC herbicide’s unique co-crystal formulation ensures product stability across pH ranges, providing extended residual control on lower pH soils and superior crop safety on high pH soils. This high-performance formulation is scientifically designed to work harder than the individual ingredients alone. The liquid aqueous suspension concentrate (SC) offers better mixing in the tank and provides tank-mix convenience with other active ingredients,” says Kip Jacobs, UPL Technical Services Manager, Row Crops.
Proven Trial Results
In University of Illinois trials in 2022, a pre-emergence application of PREVIEW 2.1 SC herbicide with a post-emergence application of INTERMOC™ herbicide provided good control of grass and broadleaf weeds.
For fields with exceptional broadleaf pressures, Jacobs advises growers to look at adding MOCCASIN® II PLUS herbicide in the pre-emergence application of PREVIEW 2.1 SC and then follow with the post application of INTERMOC herbicide. In University of Illinois trials in 2022, this combination followed by a post-emergence application of INTERMOC herbicide provided exceptional control of PPO- and glyphosate-resistant waterhemp, as well as giant foxtail and velvetleaf.
“We have found great success with a Group 15 layered residual program in combination with PREVIEW 2.1 SC herbicide,” Jacobs says. “Even when growers are faced with weeds that exhibit herbicide resistance, layering residual herbicides provides a longer window of weed control.”
A layered residual program is one way growers can extend weed control up to canopy closure, with the current tools they already have in the toolbox.
Learn more about the best crop protection solutions for your acres and connect with your local UPL representative at https://uplportfolio.com/en-us/soybeans.
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