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Floriculture & Greenhouse Crop Production

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  • PGR dilution guide

    Published on April 18, 2013
    A critical factor for effective use of plant growth regulators (PGRs) is that the solution is mixed in the appropriate concentration.

  • 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.

  • Plug / liner dip guidelines

    Published on February 18, 2013
    A plug or liner dip is a plant growth retardant (PGR) application technique for ornamentals in which a tray of finished young plants is placed into a shallow PGR solution for a short period of time.

  • A New Height Control Possibility for Easter Lilies

    Published on November 18, 2012
    Flurprimidol drenches have been shown to successfully control height of oriental lilies and Dutch bulbs such as hyacinth, narcissus and tulips, but there is no data that shows how effective flurprimidol drenches are on Easter lilies.

  • Sumagic on vegetable transplants

    Published on November 18, 2012
    Sumagic is the only plant growth retardant registered for use as a foliar spray on young tomato, pepper, eggplant, groundcherry, pepino and tomatillo plants.

  • Successful use of paclobutrazol

    Published on April 18, 2012
    Paclobutrazol is probably the most widely used plant growth retardant in the production of floriculture crops because of its wide range of efficacy and moderate- to long-lasting response.

  • Control stem length with liner dips

    Published on November 18, 2011
    Dipping trays of rooted liners and plugs into a PGR solution, or liner dip, is a newer method of efficiently applying root-absorbed PGRs that controls stem elongation after transplanting.

  • A new paclobutrazol (Piccolo 10XC)

    Published on September 18, 2011
    Fine Americas released a new, more concentrated formulation of paclobutrazol called Piccolo10XC. Plant responses were similar when the same active ingredient, volume, and application rate were used.

  • Using ABA to reduce water loss

    Published on August 18, 2011
    Michigan State researchers investigated how an experimental formulation of abscisic acid (ABA) influenced drought stress tolerance of finished potted garden chrysanthemums and aster. The product mentioned is not commercially available.

  • Tips on using uniconazole

    Published on April 18, 2011
    This article provides suggestions for how and when to use uniconazole (e.g., Sumagic and Concise) as a spray or drench to obtain desirable, more compact ornamental plants.

  • Rice hulls and PGRs - en Español

    Published on December 23, 2010
    La cascarilla de arroz vaporizada ha demostrado ser un componente atractivo en los sustratos de crecimiento para los productores que deseen incorporar un producto sostenible en la producción de cultivos en invernaderos.

  • Rice hulls and PGRs

    Published on November 18, 2010
    How do rice hulls in your potting media affect your plant growth regulators?

  • 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.

  • Non-Chemical Height Control

    Published on November 18, 2010
    Integrating height control strategies with traditional chemical control is an approach for growers embracing sustainability.

  • 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.

  • 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.

  • Do it yourself (conduct your own trials)

    Published on May 18, 2010
    Many articles often recommend that growers perform their own smal-scale tests for the specified procedures. Here are a few tips for conducting your own experiments.

  • 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?

  • 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.

  • 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?