​​​Cotton Maturity and Plant Growth Regulators

December 2018 | 13 min., 52 sec.
by Glen Ritchie
Texas Tech University and Texas A&M AgriLife Research

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​Ritchie discusses the management of plant growth regulators (PGRs), addressing four general questions: (1) Why did I have low micronaire in 2017? (2) Will I have high micronaire in 2018? (3) If I irrigate properly, do I need PGRs? and (4) Can I curb late-season growth with PGRs? In discussing PGRs, he defines and discusses types of cotton maturity (vegetative/reproductive and fiber maturity), how water deficit affects maturity, effects of planting date on maturity, and effects of gibberellins on crop growth.

About the Presenter

Glen RitchieGlen Ritchie is a cotton physiologist with a joint appointment at Texas Tech University and Texas A&M AgriLife Research in Lubbock, Texas. His current research focuses on physiology and plant water relations in cotton and sorghum. His research group evaluates irrigation level, irrigation timing, the interaction of irrigation with cultivars, soil moisture, and fertility.

Contact Information:
Email: glen.ritchie@ttu.edu


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