PGR Management for Northern Production Regions

December 2022 | 9 min., 4 sec.
by Seth Byrd
Oklahoma State University

Audio Icon Summary Webcast Icon Study Guide IconSlide Deck Icon​​​


​This presentation review factors in plant growth regulator (PGR) management for northern U.S. production regions. General topics include considerations for PGR use (plant size and growth; dilution of effect; “pix effect”); other factors that regulate growth (variety selection; fruit retention; management of nutrients and water); and PGRs in dryland cotton (fruit loss from water and/or heat stress or storm damage; season-long conditions; risk of applying versus not applying; anticipating need).

About the Presenter

Seth Byrd

​Seth Byrd is the Extension cotton specialist for Oklahoma State University. He received a bachelor’s degree in agronomy from North Carolina State University, a master’s degree in agronomy from the University of Florida, and a PhD in crop and soil science with a focus on cotton agronomics from the University of Georgia. (OSU photo by Todd Johnson)

Contact Information:


In 2020, Grow webcasts had more than 110,000 views. Help support our mission to provide comprehensive high-quality, science-based resources to and for plant health researchers and practitioners at no cost.

PDMR submission guidelines and schedule information are available online.


Plant Health Progress is a peer-reviewed multidiciplinary, online journal of applied plant health.