Top Crop Manager

News Cereals Markets
Updated U.S. Manipulator MRL good news for Canadian oats

June 5, 2020  By Top Crop Manager

The U.S. Environmental Protection Agency (EPA) has amended the tolerance for residues of chlormequat chloride in or on oat grain. Chlormequat chloride is the active ingredient in Manipulator plant growth regulator (PGR).

The new regulation went into effect on May 26, 2020, increasing the maximum residue level (MRL) to 40 ppm, matching the MRL previously established in Canada for oat.

This amendment removes a significant hurdle for Canadian grain growers using Manipulator PGR on oats destined for markets in both Canada and the U.S.


Manipulator PGR was introduced to the Canadian market by Belchim Crop Protection as a tool to prevent lodging in cereal crops, allowing producers to grow higher yielding crops while ensuring a good stand and smooth harvest.

Growers are encouraged to consult with their grain handler regarding export markets before using Manipulator on oats or barley. For more information on Manipulator PGR, visit


Stories continue below