Fig. 16: Time course of accumulated marketable yield of strawberries for the whole chamber

Also, the marketable yield of the whole chamber was measured. A higher marketable yield was reached with Sonata (LED: 570 g/plant, HPS: 550 g/plant) compared to Magnum (LED: 460 g/plant, HPS: 510 g/plant) (Fig. 16). Regarding light sources, for Magnum was an advantage of the HPS treatment compared to the LED treatment reached, while for Sonata were no differences between light sources calculated.

Fig. 16: Time course of accumulated marketable yield of strawberries for the whole chamber.

Fruits in the HPS chamber started earlier to ripe, resulting in a higher first yield, whereas later the marketable yield increase decreased. In the LED treatment gave the plants later than the HPS treatment marketable ripe berries. The marketable yield on each harvest day was nearly always higher for Sonata (Fig. 17).