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Showing results for content tagged 'light management in greenhouses and controlled environments'. Search instead for the keyword 'light management in greenhouses and controlled environments'.

  • Light Management in Controlled Environments

    MSU Extension’s floriculture educational and applied research programs help improve greenhouse crop production and business management by providing trusted information on new production techniques and management strategies.

  • How green light affects floriculture crops

    Published on February 13, 2019
    Is green light really a safe light for floriculture crops? Researchers at Michigan State University find out the impact it has on crops that flower in response to the day length.

  • Replacing incandescent lamps

    Published on August 23, 2012
    Incandescent lamps can at least partly be replaced by compact fluorescent bulbs and/or LEDs without losing the ability to control flowering of ornamentals grown in greenhouses.

  • White LEDs for plant applications

    Published on November 12, 2018
    Many horticultural lighting fixtures combine blue and red LEDs. However, there are merits to using fixtures that partly or completely contain white LEDs.

  • What is your photoperiod?

    Published on September 24, 2008
    Understanding your location's natural photoperiod will help determine the most economical strategy for providing long days when needed

  • Investment considerations for greenhouse lighting

    Published on October 11, 2017
    Many growers install and operate supplemental (photosynthetic) lighting to increase crop quality and yield. This article describes some of the factors to consider when investing in a supplemental lighting system for greenhouse crop production.

  • Light fixtures and their photon fluxes

    Published on May 6, 2021
    LED fixture come in all shapes, sizes and outputs — more technically, photon fluxes and spectra. This article explains the photon flux emitted by a light fixture and why it is important.

  • Maximize the benefits of supplemental lighting

    Published on January 8, 2018
    Purchasing, installing, and operating supplemental greenhouse lighting is fairly expensive. Here are some tips and considerations to maximize your supplemental lighting system.

  • Strategies for supplemental lighting

    Published on November 24, 2009
    Different methods of greenhouse lighting have different purposes — sometimes to extend the photoperiod and sometimes to increase the daily light interval. Knowing their differences may help you make better choices for your operation.

  • Early scaling-up challenges with LED lighting

    Published on December 14, 2020
    The fundamental advantages of light-emitting diode (LED) lighting are clear, but it is still a relatively new technology and unfortunately, one can be reminded of that when the jump is made to replace conventional lighting fixtures with LEDs.

  • The economics of lighting young plants indoors

    Published on June 12, 2019
    This article provides the framework of the economics of indoor lighting of young plants (transplants). It includes example costs for an indoor plant factory in Japan, and provides highlights for indoor lighting used by two commercial growers in the U.S.

  • The benefits of lighted plugs

    Published on March 24, 2007
    One of the most cost-effective uses of supplemental lighting is during the production of seedling plugs and rooted liners. Learn how high daily light integrals benefit plants.

  • DLC requirements for LED fixtures

    Published on December 5, 2018
    This article highlights the DesignLights Consortium's (DLC's) requirements for testing and reporting horticultural lighting fixtures that contain light-emitting diodes (LEDs).

  • 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.

  • Does light quantity trump light quality?

    Published on December 5, 2017
    Some of our recent research confirms that light quality (such as the ratio or red to far red) has a greater effect on plant growth when light intensity is low than when it is high.

  • Leafy greens: Green & far red LED lighting

    Published on February 1, 2019
    Indoor production of leafy greens, Part 1 of 4: Substituting green or far-red light for blue light can increase lettuce and kale yields.

  • UV-transmitting greenhouse glazing

    Published on June 16, 2020
    Most greenhouse glazing plastics absorb UV radiation to enhance their longevity. However, plants grown under glazing that transmits UV are typically more compact, darker in color, and more resilient.

  • Managing light pollution

    Published on August 9, 2019
    While electric lighting is increasingly used in greenhouses to increase plant growth, yield, and quality, it can have unintended consequences to neighboring areas at night.

  • Providing long-days with CFLs

    Published on March 24, 2009
    Answering the question of can compact fluorescent lamps save energy and still light your crops adequately?

  • 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.

  • 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.