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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.


  • 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.

  • DLI 'requirements'

    Published on May 10, 2019
    This article provides daily light integral (DLI) guidelines to produce plants of at least moderate quality, assuming plants are grown at moderate temperatures.

  • Temperature and light on bedding plants

    Published on July 29, 2003
    Michigan State University research shows what effects temperature and daily light integral have on bedding plant production.

  • Common plant production acronyms

    Published on May 8, 2020
    This article briefly defines 20 acronyms (abbreviations formed from the initial letters of other words) commonly used when discussing controlled-environment production of plants.

  • The importance of light uniformity

    Published on March 3, 2017
    Managing light is obviously critical to the production of crops grown in controlled environments. When considering the different dimensions of light, we often overlook the importance of light uniformity.

  • 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.

  • Managing photoperiod in the greenhouse

    Published on March 23, 2013
    This six-page bulletin provides information on how to control the day length in commercial greenhouse production of floriculture and nursery crops.

  • Sole-source lighting of plants

    Published on September 13, 2017
    Sole-source lighting is a term used to describe the deliver of light to plants that do not also receive light from the sun. In other words, electric lighting is delivered indoors and provides the sole source of light for plant growth and development.

  • New, high-resolution, interactive DLI maps

    Published on October 10, 2018
    New maps of the photosynthetic daily light integral (DLI) in the United States have been developed and are now available online.

  • Saturating DLIs for flowering

    Published on February 15, 2011
    An in-depth look at daily light integral (DLI) and how bedding plants can be classified into different light response groups.

  • Maximizing photosynthesis to improve growth

    Published on December 23, 2012
    Plant growth is suppressed when light, CO2, and/or water are not sufficiently available inside greenhouses.

  • Far red is the new red

    Published on February 6, 2017
    Adding far red to red and blue light from LEDs brings control of plant growth to the next level.

  • LED fixture efficacy: A 2020 update

    Published on January 13, 2020
    As we enter 2020, there are already more than 50 LED products on the Design Light Consortium's Horticultural Lighting list of qualified products. The spectrum, amount of emitted light, and efficacy vary widely among fixtures.

  • LEDs: More than μmol×J–1

    Published on July 7, 2021
    Light-emitting diodes (LEDs) are known for their efficiency at converting electricity into light. While efficacy is a very important consideration, there is more to them than just their μmol×J–1.

  • Supplemental greenhouse lighting: LED or HPS?

    Published on September 20, 2017
    Researchers at Michigan State University see if the results from producing high-quality seedlings with LEDs justify the higher capital outlay for installation.

  • A closer look at far-red radiation

    Published on May 7, 2016
    Far-red light can be defined as photons with wavelengths from 700 to 800 nanometers. It can promote extension growth and flowering, and at least indirectly increase growth.

  • LEDs in floriculture

    Published on June 24, 2009
    LED technology, first used in the mid-1980s, has come a long way and may make its way into the greenhouse in coming years.

  • 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.