Katagonis a new postemergence herbicide for targeted control of broadleaf and grass weeds that is safe for use in different types of field corn.

A first-of-its-kind HPPD premix, Katagon provides corn growers with greater flexibility while protecting corn yields from yield-robbing threats caused by resistance.

Katagon’s novel co-formulation of two proven active ingredients delivers top performing broadleaf and grass control, including glyphosate, PPO, triazine and ALS-resistant weed species.

It also provides multiple modes of action with the added benefits of a low use rate, crop safety profile and wide application window.

Primary Weeds Controlled

Barnyardgrass, Foxtails (giant, green, yellow), Lambsquarters, Ivyleaf Morningglory, Large Crabgrass, Palmer amaranth (amaranth spp.), Ragweed (common, giant), Redroot pigweed, Sorghum, Velvetleaf, Venice Mallow, Waterhemp


Katagon is designed for early to mid-season postemergence applications. It is powerful enough for a one-pass postemergence program when supplemented with higher rates of atrazine for enhanced weed control.1

Katagon can be use alone or in combination with other approved herbicides. Katagon is most recommended for use with atrazine.

In fields where tough-to-manage or resistant weed species are present, growers can use Katagon as part of a two-pass sequential weed control program.

With a wide application window, Katagon can be applied to corn from V1 up to 20-inch tall corn or V5, whichever is most restrictive. 

When used in a tank mix with atrazine, time of application must occur before corn reaches 12-inches in height. 

Field Trial Data

Delivering cross-spectrum postemergence weed control activity, Katagon is a flexible fit for growers wanting the freedom to farm with less restrictions and limitations.

In product development trials, Katagon has shown high levels of performance in controlling emerged broadleaf and grass weeds, including biotypes resistant to glyphosate, PPO, triazine and ALS.

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States Registered

    1In a tank mix with Katagon, the maximum single application rate for atrazine is 2.0 pounds per acre. Do not exceed 2.5 pounds of atrazine per acre per year.

    ATRAZINE IS A RESTRICTED USE PESTICIDE. Katagonis an invention and trademark of Ishihara Sangyo Kaisha, Ltd., and is manufactured and developed by ISK Biosciences Corporation.