Growing Miniature Waterlilies Under Different Lighting Conditions
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Abstract
An experiment was conducted at the Faculty of Agriculture and Natural Resources, Rajamangala University of Technology Tawan–ok, Chonburi, from July to September 2023. The objective of this research was to determine the optimal growing conditions for Nymphaea minuta based solely on variations in the color temperature of the LED growth lights. This experiment used five light sources to investigate the growth of N. minuta rhizomes, including 1) 6500K-LED growth light (6500K-LED), 2) 4500K-LED growth light (4500K-LED), 3) Mixed 6500K +3500K+450 nm+660 nm+730 nm-LED growth light (Mix LED) and 4) white fluorescent (White-Flu) light sources compared to the control (sunlight). Specimens from each group were planted in a ceramic cup with a 12.7 cm top diameter and a 10.16 cm depth, which was half filled with heavy clay soil. Characterization of the samples was conducted from day 28 to day 84 post-planting to assess growth. Our findings indicate that the responses of N. minuta to different light qualities diverged from those observed in most terrestrial plants. The leaf count under artificial light treatments did not significantly differ from that under sunlight treatment after 84 days. However, the leaf length, leaf width, and petiole length under sunlight treatment were lower than those under artificial light treatments. The Mix LED treatment exhibited the shortest time to flowering (54.75 days), whereas the White-Flu treatment required the longest duration to reach flowering (75.00 days).
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