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Floriculture & Greenhouse Crop Production

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  • Lighting metrics... and what matters

    Published on October 23, 2015
    This article discusses some of the metrics used to describe or quantify the light emitted from various fixtures (or LED arrays), some of which are highly relevant to plant applications and others that are only applicable to people.

  • Photoperiodic vs. photosynthetic lighting

    Published on September 23, 2015
    There is sometimes confusion about photoperiodic lighting (to regulate flowering) and photosynthetic lighting (to increase plant growth) in greenhouses. This article differentiates these two lighting applications.

  • Boom lighting

    Published on July 23, 2015
    We have developed some general guidelines based on limited research with simulated boom lighting, studies with cyclic lighting, and grower experiences.

  • Interactions of light, CO2, and temperature on photosynthesis

    Published on June 23, 2015
    Often times, we simplistically think about light as the driver of photosynthesis, and temperature as the key to control crop timing. Although that’s generally true, other cultural and environmental factors influence crop growth and quality.

  • Light wavebands & their effects on plants

    Published on March 23, 2015
    This article discusses how the four primary wavebands of light (blue, green, red, and far red) influence plant growth and development. Light wavebands also interact with each other, but only a few are mentioned here.

  • Evaluating different colors of LEDs to control flowering

    Published on December 10, 2014
    Researchers at Michigan State University tested the effectiveness of various LED colors. Read to learn how they affected flowering.

  • Replacing incandescents with LEDs

    Published on November 23, 2014
    LED lamps developed to regulate flowering are considerably more expensive than incandescent or compact fluorescent bulbs, but they last much longer, consume less energy, and are at least effective.

  • Understanding Light: Part 1 of 2

    Published on October 24, 2014
    The first of two articles explaining the critical differences in supplemental and photoperiodic light.

  • Managing Photoperiodic Lighting, Part 2 of 2

    Published on October 24, 2014
    This is the second article in a two-part series focuses on what photoperiodic lighting is and how to use it in your greenhouse.

  • Lighting the Future of Young Plants

    Published on October 24, 2014
    Walking through how growers use led lights for supplemental and sole-source lighting?

  • The double-ended HPS lamp

    Published on September 23, 2014
    Double-ended high-pressure sodium lamps are considerably more efficient at converting electricity into light useful for photosynthesis than single-ended lamps.

  • Growing ornamental seedlings under different wavelengths of red light from LEDs

    Published on August 23, 2014
    Plants grew similarly under different colors of red light, so the choice of red LEDs to be used for horticultural applications could depend on factors such as LED longevity, efficacy, and cost.

  • LEDs vs. HPS lamps: A reality check

    Published on June 23, 2014
    With all of the promise and potential of LEDs, some myths and misconceptions are being perpetuated - hence the need for a reality check.

  • Control flowering with LEDs

    Published on March 23, 2014
    Is it worth paying extra for LEDs? Researchers at Michigan State University found that the long-term benefits may outweigh the up-front costs.

  • Growing seedlings under LEDs, part 2

    Published on February 23, 2014
    In the second part of a two-part series, Michigan State University researchers share their findings in germinating seedlings indoors under LED lights.

  • Growing seedlings under LEDs, part 1

    Published on January 23, 2014
    In the first part of a two-part series, Michigan State University researchers share their findings in germinating seedlings indoors under LED lights.

  • DLICALC Online Tool: Helps Growers Calculate Daily Light Integral

    Published on October 24, 2013
    Researchers have developed a new tool to help growers calculate supplemental daily light integrals and determine how much supplemental light is required to improve growth.

  • Comparing LED Lighting To High-Pressure Sodium Lamps

    Published on October 24, 2013
    Research at Purdue University is determining how LEDs, providing light of different wavelengths, compare to traditional high-pressure sodium lamps. Part one of a two-part series.

  • Comparing LED Lighting To HPS Lamps For Plug Production

    Published on October 24, 2013
    In the second of a two-part series, research at Purdue University is determining how LEDs, providing light of different wavelengths, compare to traditional high-pressure sodium lamps.

  • Understanding The Differences Between Photoperiodic And Supplemental Lighting

    Published on October 24, 2013
    Let’s clear the confusion over different types of greenhouse lighting.