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Floriculture & Greenhouse Crop Production

Nursery & Christmas Trees

Department of Community Sustainability


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.

  • An overview of long-day lighting

    Published on July 17, 2019
    There are a lot of factors to consider for effective and efficient long-day lighting. This article provides a brief overview of when and how to deliver lighting to create long days inside greenhouses.

  • 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.

  • Strategies to shorten crop production time

    Published on October 6, 2021
    This article briefly summarizes how genetics, transplant size, and cultural and environmental conditions can shorten, or in some cases unintentionally lengthen, the production time of crops grown in greenhouses.

  • 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.

  • 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.

  • LEDs: Far red & light intensity interaction

    Published on March 4, 2019
    Part 2 of a 5-part series explains how far-red light and light intensity (the photosynthetic photon flux density) interact to influence growth of young plants indoors, under fully controlled environments.

  • Lighting plans: Their generation and importance

    Published on August 17, 2017
    Light intensity and uniformity are critical to successful production of plants. This article describes how lighting plans are developed, and why they are so important when comparing lighting technologies.

  • Do you know what your DLI is?

    Published on December 24, 2006
    Daily light integral has a profound effect on your plants. Learn how to measure DLI in your greenhouse three different ways.

  • Daily light integral & flowering of annuals

    Published on November 23, 2010
    The daily light integral can influence crop timing and quality characteristics including branching, flower number, and flower size. This article presents research-based information on how light quantity influences production of annual bedding plants.

  • Which light sensor should I use?

    Published on September 23, 2012
    This article focuses on the different units of instantaneous light intensity and how each is measured.

  • 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.

  • Diffused glass

    Published on April 23, 2016
    Growers need to weigh the advantages of diffused glass with its cost considering their greenhouse location, production periods, and types of crops grown.

  • Managing light during propagation

    Published on June 24, 2005
    Michigan State University research examines how environmental factors - especially light - influence the rooting and growth of vegetative annual cuttings.

  • Lighting plugs at different growth stages

    Published on January 23, 2013
    Plants that received supplemental lighting during the entire plug stage were of highest quality. The greatest benefits occurred when seedlings were lighted during the later stages.

  • 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.

  • 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 quality defined

    Published on June 24, 2007
    Helping growers understand the fundamental dimensions of light.

  • Problems with footcandles, lux and lumens

    Published on September 23, 2013
    The horticultural industry should discontinue use of photometric units such as lumens, lux and foot-candles. These units are based on people’s perception of light and are a highly misleading indicator of plant growth and flowering applications.

  • LEDs: Blue & far-red light

    Published on April 10, 2019
    Part 3 of a 5-part series summarizes results from an indoor lighting experiment with floriculture crop seedlings, where we determined whether blue light could nullify the effects of far red on stem elongation, without inhibiting flowering.