Dutch growers use LED auxiliary lighting to stimulate lily production growth

In October 2017, a horticultural LED lighting trial was carried out in Together2Grow, a lily grower in Poeldijk, a village in the south of the Netherlands. It is reported that Together2Grow has cooperated with Plessey to use LED lighting as an auxiliary high-pressure sodium lamp lighting in the greenhouse, and planted lilies of the Virginia variety as an experiment. The results of the trial showed that lily flower production increased by 20% with the assistance of solid-state lighting for 7 weeks.

The test range is controlled under the existing high-pressure sodium lamp lighting environment, and the high-pressure sodium lamp can provide 70 moles/m2/sec photosynthetic photon flux density (light intensity). In the solid-state lighting test, each 1000W high-pressure sodium lamp is installed next to With 7 sets of Plessey Attis LED lamps, the photon flux density of photosynthesis increases to 130 moles/m2/sec. The test results showed that the flower production increased and bloomed more lushly under the solid-state lighting environment.

In addition to the 20% increase in yield, lilies under LED horticultural lighting even grew an average of 2 grams more per stem. It is reported that the LED lighting system combines far-infrared, ultra-red and blue LEDs. According to Plessey, LED lights are 40 percent more efficient than high-pressure sodium lights.