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Coloring Up Ornamental Pepper Fruit With Ethephon

Tue, Aug 3rd, 2021, created by Brian Whipker
Journal Article Abstract

Enhancement of Ornamental Pepper Ripening withEthephon Sprays or Drenches

Ethephon can be used to enhance fruit ripeningin ornamental peppers.  Previous workfound ethephon sprays to be an effective method of ripening enhancement;however, ethephon sprays also led to significant fruit abscission andphytotoxicity to the foliage. This study compared the efficacy of ethephondrenches and sprays on an ornamental pepper cultivar. These plants receivedeither a foliar spray or a drench of 75, 150, 300, or 600 mgL-1(ppm) ethephon. All plants treated with an ethephon drench and most sprays had morered peppers than the untreated control. Plants that received an ethephon drenchof 75 or 150 mgL-1 had higher fruit set compared to untreatedplants or sprayed plants. Drenched plants had lower phytotoxicity than sprayedplants or were asymptomatic.  In thisstudy, the optimal concentrations of 150 300 mgL-1 ethephonapplied as a drench resulted in higher fruit set and ripening with lowerincidence of phytotoxicity.

Please read and follow all label directions before applying any plant growth regulator.

Link to download article: (listed at the bottom article)

About the Author:

Brian Whipker

Professor, Horticulture, North Carolina State University

Brian E. Whipker is a professor of floriculture at North Carolina State University. He has an appointment split between extension and research, but also teaches the graduate level plant nutrition course at NC State. His specialization is plant nutrition, plant growth regulators, and problem diagnostics. He brings over 30 year of experience in diagnosing grower plant problems.

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