Lighting

Runkle to Present GLASE Webinar on Growing Leafy Greens

GPN contributor Erik Runkle from Michigan State University will present a webinar on "Environmental Regulation of Growth and Quality Attributes of Indoor Leafy Greens" on Sept. 30. at 2 p.m. The webinar is part of... more »

LED Manufacturer Valoya Appoints New CEO

Valoya, a manufacturer of horticultural LED lighting solutions recently announced the appointment of Tuukka Parviainen as its new chief executive officer. Parviainen will take on the CEO role starting Oct. 1, 2021. “Tuukka is an... more »

Precision Control of Supplemental Lighting

Supplemental lighting is important in facilitating winter-time greenhouse crop production in many areas of the United States. LED fixtures are becoming increasingly popular due to their higher efficacy and longer lifespan, as compared to HPS... more »

Light Spectrum for Different Applications

There are several terms used to describe the color, or spectral distribution of light, including light quality, spectral quality, light spectrum and photon spectrum. These terms describe the relative quantities of different wavebands of light,... more »

Consider the Photosynthetic Benefits of Far-Red Radiation

A bumper crop starts with great seedlings. As a grower, it makes sense to supply supplemental lighting to the propagation table. Plants are densely spaced at this time so the money you spend on lighting... more »

Increasing the Daily Light Integral

The daily light integral (DLI) refers to the cumulative amount of light received per day. More technically, the DLI is the number of moles (mol) of photons with wavelengths between 400 and 700 nm that... more »

Virtual Plant Lighting Short Course to Take Place in October

The first annual virtual Plant Lighting Short Course will take place this October and November. The short course is being presented by GLASE (Greenhouse Lighting & Systems Engineering), OptimIA and LAMP (Lighting Approaches to Maximize... more »

LEDs: More than μmol×J–1

Light-emitting diodes (LEDs) are known for their efficiency at converting electricity into light. For most plant applications, we are primarily interested in how much of the light emitted is within the photosynthetically active waveband (PAR),... more »