Grower experiences with chlormequat chloride (CCC)


Farming in a place like Ireland presents its share of challenges, mainly in keeping crops standing under high fertilizer regimes. Our family grows winter- and spring-sown wheat, barley, oats, and oilseed rape. We need products that provide reliable results each season—no matter the weather conditions. Traditionally, Irish growers have started with standard chlormequat chloride (CCC)-based products followed by trinexapac and/or ethephon later in the season. Since early-season spring temperatures tend to be too low for standard chlormequat, the results can be disappointing.

The main benefit we’ve seen from Eastman’s CCC-based product formulated to work effectively at temperatures as low as 34°F has been reliable growth regulation and manipulation in early spring. We’ve seen how crops sprayed early will develop a better rooting system and produce a higher number of more evenly sized tillers. Crops will be noticeably stiffer and more even to walk across, which we believe will give a strong foundation for better grain yields.

We use Eastman’s Adjust™ SL plant growth regulator alone as a first-crop application. We follow up with a mix of Eastman’s product and trinexapac. We find no tank mix problems when paired with any other relevant agrochemical product.

Eastman’s plant growth regulator gives us peace of mind that we have chosen the best available technology for our wheat, barley, and oat crops. It keeps crops standing and leads to the best possible grain harvests.

Testimonial by Denis Madigan
Managing director of DHM Agrochemicals Limited, authorized distributor for Eastman’s crop protection solutions in Ireland for more than twenty years


United Kingdom and Continental Europe

The United Kingdom, France, Germany, Poland, and many other EU countries enjoy the highest-yielding grain acreage around the globe. This positions them to be the most significant grain exporters of cereals. Nitrogen and growth regulators are the key tools applied together in these high grain-yielding countries.

For large grain-producing countries in the EU, chlormequat chloride (CCC) is a standard tool to protect yield and investments on wheat, barley, oats, rye, and triticale. According to market studies, more than 50% of wheat acres receive a CCC treatment. Likewise, almost 50% of barley, oats, rye, triticale, and spelt are also treated with CCC.

CCC is used in Europe as a very effective lodging control agent, which improves crop standing power. It is also integrated as a field management tool to establish fewer plants per square meter while applying higher nitrogen levels to maximize yield potential. Nitrogen and growth regulators are the key tools applied together in high wheat-yielding countries.


In Canada, CCC has become the industry standard for maximizing yields and increasing harvest efficiency of wheat, oats, rye, barley, and triticale. Since its launch in 2014, CCC has gained widespread market acceptance in cereals because of its wide application window and safety for crops at low temperatures. CCC is an excellent tool for growers who want to maximize their yield potential by applying higher nitrogen rates where lodging is a concern. Growers in Canada recognize the value of CCC in their high-yielding and lodging-prone cereals’ application programs.

In Canada, product is sold under the brand name Manipulator™ through authorized Eastman distributor Belchim Crop Protection.


CCC for high-yielding and lodging-prone cereals
On the left, a lodged, untreated field, and on the right, a field treated with Eastman product used in Canada

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Certain statements may not be applicable in all geographical regions. Product labeling and associated claims may differ based on government requirements.
Pending EPA registration, Adjust SL is not yet registered for sale or use in the U.S.