Horticultural Lighting

Lighting for lettuce beyond growth rates Experiments found greenhouse supplemental light spectrum impacts yield and nutrition of hydroponic lettuce.   BY JIAQI XIA, JAKE HOLLEY AND NEIL S. MATTSON | JUNE 2023 Lettuce is the most widely grown leafy green in the United States. While most lettuce is grown in fields, production is increasing in controlled…

Far-red light & temperature interactively regulate plant growth and morphology Part II: Applications for greenhouse production.   BY SANGJUN JEONG, ANTHONY PERCIVAL, JOSHUA CRAVER, GENHUA NIU AND SHUYANG ZHEN | SEPTEMBER 2023 Fig. 1. Representative lettuce plants grown under three light spectra x three temperatures (total nine treatments) under a low light intensity (250 μmol·m-2·s-1) and…

  Far-red light and temperature interactively regulate plant growth and morphology Part I: Applications for indoor production.   BY SANGJUN JEONG, ANTHONY PERCIVAL, JOSHUA CRAVER, GENHUA NIU AND SHUYANG ZHEN | AUGUST 2023 Editor’s note: This is the first of a two-part series. In controlled environmental agriculture, extensive efforts have focused on improving crop yield, quality,…

    Do you know if your leafy greens are receiving enough light? It is important that plants receive their specific desired amount of light everyday for optimal growth. Daily light integral (DLI) is a measurement used to understand the quantity of light plants receive throughout the day. If you are curious how many photosynthetically…

  “We’re aiming to gain efficiency of production in the greenhouse, and we’re looking to have better yields and quality of production, all while lowering the consumption of energy,” says Louis Golaz with RED Horticulture. “That makes us much more than just a lighting manufacturer.” Together with new sales manager Jose Carretero, he explains why…

28 – The Bible of Lighting – by Hort Americas.pdf

  High-pressure sodium (HPS) lighting was long considered the industry standard when it came to lighting indoor and greenhouse controlled environment agriculture (CEA) applications. So ubiquitous was the usage of HPS that many greenhouse and indoor setups were designed specifically to accommodate the lighting system, accounting for the radiant heat generated by HPS bulbs and…

“There seems to be some debate,” Colin Clark, CropKing “There seems to be some debate about whether plants will grow better under 24hrs of light, and today we’re breaking down our thoughts,” says Colin Clark, Technical Horticulturist at CropKing. “To better understand this topic we need to know some basics about photosynthesis. As many know…

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The 5 main differences between air- and water-cooled LEDs To ensure optimal operation, LED lights must be kept cool because overheating can have a significant impact on their power and operation and increases the risk of early defects. There are several ways to remove heat from LEDs. Oreon cools its LED fixtures with water, for…