Lighting

Blooming by Lamplight

Many greenhouse crops flower in response to day length and will only flower, or flower faster, when the proper photoperiod is provided. Photoperiodic crops are categorized as short-day plants (SDPs) or long-day plants (LDPs), where... more »

Leadership on LED Grow Lights

The benefits of using supplemental light for the propagation and production of greenhouse ornamental, vegetable and cannabis crops have been well documented by university researchers and commercial growers. Much of the research with ornamental crops... more »

Hort Americas, GE Current Team Up to Aid AppHarvest Expansion

In May 2020, greenhouse vegetable grower AppHarvest approached commercial horticultural distributor Hort Americas with a challenging request. AppHarvest, which was already operating a 60-acre greenhouse tomato operation in Morehead, Kentucky, was looking to build an... more »

Blue Light as a PGR

Plant growth retardants (PGRs) are commonly applied to floriculture crops, both during propagation and the growing out (finishing) phase. When properly used, PGRs are a safe and effective way to inhibit extension growth of a... more »

Hort Americas Partners with Irrigation Design & Construction

Hort Americas has signed an agreement with Irrigation Design & Construction LLC (IDC) in Castroville, California, for IDC to become an authorized dealer of GE Current Arize LED grow lights. The agreement between the two... more »

A Closer Look at LED Efficacy

Arrays of light-emitting diodes (LEDs) have become the predominant type of fixture for new plant lighting installations. While LEDs typically have many advantages to conventional fixtures, they are primarily chosen because of their effectiveness at... more »

Signify to Acquire Fluence

On Dec. 20, Signify, a leader in lighting, today announced that it has entered into a definitive agreement with ams OSRAM to acquire Austin, Texas-based Fluence for $272 million. This acquisition is expected to strengthen... more »

Register for GLASE’s November Webinar

GLASE (Greenhouse Lighting & Systems Engineering) will be hosting its next webinar Nov. 16, 2021, at 2:00 p.m. (EDT). The webinar, Light and Energy Modeling in Controlled Environment Agriculture, will be presented by Kale Harbick... more »