When it comes to lower energy consumption, the results are clear. Compared to the reference, Van Leeuwen hardly needs to turn the tube heater on anymore. “The tube activity under these lamps is virtually zero. We only use these lamps and a low-grade floor heating system.”
The lamps consume as much electricity as SON-T, but the grower has twice as much light. Dimming also reduces energy consumption. Damen: “When you dim 50 per cent, the energy consumption also reduces by 50 per cent, while the lamp keeps itself at temperature.”
When it comes to the cultivation and the crop, the grower sees a clear difference. “We have planted several varieties of French geraniums, both under full-LED and under SON-T. In the full-LED trial, we had to brake two varieties twice. With the SON-T, we had to brake all species 6 to 10 times. So this means that with these full-LED lamps we need much less braking. At the same time, the plants here showed more branching and more leaf development in relation to the time period.
He observed the same result in the trials in Hydrangea. There, too, are stronger plants and the grower needs to use less inhibitor. “We see a stronger plant that has more time and energy to put into its development. The plant grows steadily all the time.”