Max-Ace Herbicide Tolerance Technology for Rice Approved by EPA

“Rice cropping solution with strongest yield potential, excellent weed control, crop safety and rotational flexibility”. 

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Raleigh, NC April 9, 2021 – Following EPA approval in February, RiceTec and ADAMA are bringing to market their new Max-Ace Rice Cropping Solution. This herbicide-tolerant technology with Highcard herbicide, gives rice growers an excellent tool for weed control, high-yield, a rice rotation alternative to the FullPage Rice Cropping Solution and conventional offerings from RiceTec. Max-Ace with Highcard will be available in limited supply for the 2021 growing season.

“Max-Ace will finally give rice farmers what they’ve been waiting for…a high-yielding herbicide tolerance partner to the FullPage system, which will provide control of red rice and other grass weeds that have built resistance to the IMI herbicides,” said Leandro Pasqualli, Marketing Manager for RiceTec. “It’s the perfect rotational partner with the FullPage Rice Cropping Solution and soybeans to control weeds and maintain herbicide options.”

The Max-Ace technology takes advantage of a unique, non-GMO trait that gives the rice enhanced tolerance to Highcard herbicide and is labeled for postemergence control of grassy weeds in rice, including red and weedy rice and IMI-resistant weeds. Highcard needs to be applied sequentially both early (2-leaf or later) and before panicle initiation to meet stewardship requirements and maximize the effectiveness and longevity of the technology. 

“Highcard is a novel formulation specifically designed to be used with Max-Ace Rice Cropping Solution. And with no residual carryover from Highcard, growers get full rotational flexibility to maintain their options year-over-year,” said Dave Feist, ADAMA’s US Product Strategy Manager for rice. “The exceptional yield potential of the new rice cropping solution is due not only to the quality of the seed, but also to the weed and grass control offered by Highcard, a proprietary, safened herbicide developed by ADAMA,” added Feist. 

To learn more about Max-Ace Rice Cropping Solution with Highcard herbicide, talk to your local ADAMA sales rep or visit Sales subject to state registration requirements.

ADAMA Ltd. is a global leader in crop protection, providing solutions to farmers across the world to combat weeds, insects and disease. ADAMA has one of the widest and most diverse portfolios of active ingredients in the world, state-of-the art R&D, manufacturing and formulation facilities, together with a culture that empowers our people in markets around the world to listen to farmers and ideate from the field. This uniquely positions ADAMA to offer a vast array of distinctive mixtures, formulations and high-quality differentiated products, delivering solutions that meet local farmer and customer needs in over 100 countries globally. For more information, visit us at and follow us on Twitter® at @ADAMAAgri.

About RiceTec
Based in Alvin, TX, RiceTec Inc. drives food production sustainability through rice seed technology and makes a positive impact on farmers, employees and stakeholders. RiceTec has been developing hybrid rice seed since 1988, offering the first commercial hybrid rice seed product in 1999. RiceTec was founded on the premise that modern, technology-based breeding techniques – combined with a broad, diverse germplasm collection – allow for efficient development and economical production of superior hybrid seed products. For more information, visit us at

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ADAMA Contact:
Yemel Ortega
Marketing & Strategy Leader

RiceTec Contact:
RoShelle Salinas