Page 5 April, 2020 SARDA News
Effect of Trinexapac-ethyl (TE) Plant Growth Regulator on Seed Yield of Red Clover Introduction
The application of the growth regulator trinexapacethyl (TE) is a standard application to grass and clover seed crops grown in the main seed producing areas of the world. In Canada TE is not yet registered but registration by Syngenta on cereal crops such as wheat and barley is expected soon. The trade name for TE will be Moddus. Pricing at this time is not known. Studies conducted in Oregon showed red clover seed crops to be responsive to applications of TE. Trials conducted in 2011 and 2012 in Oregon showed applications of TE applied at stem elongation to red clover improved seed yields by increasing inflorescence m-2 through a reduction
in plant canopy height. TE did reduce seed weights and promoted earlier maturity. Trials were conducted from 2013 to 2015 in cooperation with SARDA, Alberta Agriculture and Forestry and Agriculture and Agri-Food Canada to evaluate the effects of TE on first year production red clover seed yields located in the Peace River Region of Alberta. In 2017 an additional trial was conducted to compare the applications of TE, CCC (chlormequat chloride trade name Manipulator) and TE+CCC on red clover seed yields applied at stem elongation stage.
