One year after the introduction of the new rose spectrum, it appears that the roses react well to the new light spectrum. The combination of LEDs and climate control according to the principles of Het Nieuwe Telen bring top quality and sustainability closer. The new light spectrum, developed by Signify, the world leader in lighting and (WUR), improves the quality of the large-flowered rose plants Red Naomi! and Avalanche considerably. This is evident from the interim results from the research that takes place at the Delphy Improvement Center in Bleiswijk. The new spectrum mainly has a positive effect on leaf quality, the inflorescence and bud size.
"We are very happy with the results we achieve with the new rose spectrum", says Leontiene van Genuchten, plant specialist at Signify. "Where we saw earlier that a crop did not perform well, the quality has remained good this winter. We see the same result at practice companies where we test the new rose spectrum. "
New spectrum works well on the quality of the leaves, the inflorescence and bud size
The rose crop Red Naomi! has had a difficult, warm summer. In addition, part was cleared in April and replaced by Avalanche, which meant that testers had to restore balance in the crops in a department where a young and an older crop are next to each other. "The number of branches per square meter was very high last summer, but the job quality was insufficient," says researcher Arie de Gelder of Wageningen University & Research. "The new spectrum works well on the leaf quality, the blaze and bud size," he reports. Growers who regularly visit this trial are also satisfied with the state of the crop.
Beautiful crop Avalanche
The young Avalanche crop is in good shape. The researchers see a healthy and growing crop, with thick branches. The leaves look a bit dark. "We have to maintain an average climate for both varieties. Actually, we could grow Avalanche a little warmer, but that is at the expense of Red Naomi! ", Says De Gelder. "We see that Avalanche+ reacts well to the new light spectrum and that is positive." During the BCO on 1 February, growers can take a look at the IC in Bleiswijk.
GreenPower LED toplighting with new rose spectrum
The latest generation Philips GreenPower LED Toplighting is equipped with the latest light recipe specially developed for the rose crop. A small amount of white light has been added to this spectrum, so that employees in the greenhouse can better assess the crop when harvesting or scouting. The new module has a release rate of 500 to 600 μmol / m2 / s each with a very high efficiency of up to 3.0 μmol / J.