Fig. 13: Length of leaves

4.2.5 Length of leaves

Length of leaves was staying during the experiment at 42-48 cm (Fig. 13). Young plant production under HPS lights resulted in a significantly higher leaf length compared to young plant production under LEDs when plants received in continuous production “Hybrid+LED”. However, when plants received in continuous production “Hybrid”, was a significant higher leaf length measured when plants were grown in young plant production under LEDs compared to HPS lights. While the continuous light treatment had no influence when plants received HPS lights in young plant production, was a significantly higher leaf length of plants that received LEDs in young plant production measured, when plants were lighted with “Hybrid” instead of “Hybrid+LED” in continuous production.

Fig. 13: Length of leaves.

Letters indicate significant differences (HSD, p ≤ 0,05).

4.2.6 Number of clusters

The number of clusters increased with approximately one additional cluster per week. The treatment “HPS, Hybrid+LED” had a significantly lower amount compared to “LED, Hybrid” (Fig. 14).