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Showing results for content tagged 'height management of ornamentals'. Search instead for the keyword 'height management of ornamentals'.


  • Getting results with liner dip

    Published on November 18, 2008
    In this article, we provide four keys to successful use of using plant growth regulators as liner (or plug) dips.

  • Maximizing PGR spray applications

    Published on April 18, 2010
    Despite the availability of many different plant growth regulators, their spraying methods are generally similar. How can you get the most out of each application?

  • Know your application techniques

    Published on August 18, 2006
    Be sure to select the proper plant growth regulator application technique to achieve your desired crop size.

  • PGR drench guidelines

    Published on April 18, 2007
    A drench of a plant growth regulator (PGR) is an application of a relatively large volume of solution at a low concentration to the growing media. Learn more about which chemicals are appropriate for drenches, as well as suggested volumes and rates.

  • Spray vs. sprench vs. drench

    Published on July 18, 2010
    This article discusses three application methods for plant growth regulators: foliar spray, substrate drench, and sprench, which is a hybrid between a spray and a drench. Here are some guidelines to help you determine which method is most appropriate.

  • Understanding how PGRs work

    Published on May 17, 2017
    Plant growth regulators are chemical compounds that regulate various growth and developmental processes in plants, such as seed germination, rooting, branching, flowering, fruit development, dormancy and plant growth habit.

  • A new height control possibility for daffodils and hyacinths

    Published on March 18, 2013
    In this first of a two-part series, we look at ethephon (e.g., Florel) release as affected by substrate pH, and results of drenches on daffodils and hyacinths.

  • Height control for vegetable transplants

    Published on February 18, 2010
    A supplemental labeling of Sumagic for use on vegetable transplants in the U.S. has made height control less complicated. There are a few other methods that may be helpful, too.

  • How to avoid GA carryover

    Published on August 18, 2010
    Gibberellins (GA) can bind to plastic and concrete, and potentially cause excessive growth, especially in sensitive crops.

  • Rice hulls and PGRs - en Español

    Published on December 23, 2010

  • PGRs on perennials

    Published on June 18, 2008
    Learn how to choose the right plant growth regulator (PGR) and application method for commercial production of herbaceous perennial crops.

  • Using a GA to increase plant height

    Published on August 8, 2018
    Regardless of the cause, the most common technique to increase plant height of containerized flowering plants is an application of gibberellic acid by someone certified as a pesticide applicator.

  • Controlling height with temperature drops

    Published on April 17, 2009
    Temperature drop is the practice of lowering the temperature, typically by 5-15 degrees F, before sunrise. Generally, the greater the magnitude of the temperature drop, the stronger it suppresses plant height.

  • Comparing PGRs

    Published on October 18, 2008
    Plant growth retardants (PGRs) are often used by commercial growers to produce a more compact, higher quality ornamental plant. This article compares the efficacy of different products with the same active ingredient.

  • Height control of perennials: What works and what doesn’t

    Published on August 17, 2020
    This article discusses height control techniques that generally do or don’t work for herbaceous perennials forced into flower.

  • Early growth regulator drenches on poinsettia

    Published on November 18, 2010
    A technique to inhibit stem extension of poinsettia is to apply an early, low-dose PGR drench. This article will compare the efficacy of low-dose and early drench applications of paclobutrazol on poinsettia crops.

  • Ethylene in floriculture

    Published on January 7, 2019
    Ethylene can be a harmful contaminant in greenhouses and during shipping, but there are also situations when ethylene can elicit desirable responses in greenhouse crop production.

  • Going beyond the surface

    Published on September 18, 2009
    In some cases, adding a surfactant to a plant growth regulator solution can improve the product’s efficacy and increase uptake. How can you know when to use these products?

  • Environment and PGR interactions

    Published on December 17, 2015
    When plant growth regulators (PGRs) are applied as sprays, their efficacy can be greatly influenced by the environment. Understanding how environmental factors influence PGR spray efficacy can lead to more effective and predictable plant responses.