Abstract Trinexapac‐ethyl (TE) is a plant growth regulator commonly used in cereal production systems. It retards by inhibiting gibberellin (GA) biosynthesis, thereby reducing the risk of stem lodging. Lodging at latter stages crop development can compromise grain yield and quality. Thus, application TE may protect quality winter cereals. A field study was conducted from 2014 to 2017 across Can...