Articles
Effect of different LED light spectrum and fertilizer on the growth, phenolic compounds, and antioxidants of Thai basil (Ocimum basilicum Linn.) in a closed plant production system
Article number
1423_36
Pages
285 – 292
Language
English
Abstract
This study aims to optimize the conditions for the growth and antioxidants of Thai basil (Ocimum basilicum Linn.) in an indoor environment under the synergic effect of light and fertilizer addition.
In general, it was found that specific light conditions can enhance basil growth, but this effect is highly dependent on the other environmental conditions.
This study determined the effect of different light sources by employing soilless media (perlite:vermiculite; 1:1 ratio). After that, a design of experiment approach has been implemented to calculate the specific combination of LED lights, including: 1) red:white (1:1); 2) red:white (3:1); 3) red:blue (3:1); and 4) red:white:blue (3:1:1), with two different types of fertilizers (chemical and bio-extract). The results demonstrated no significance for the growth parameters of Thai basil from all types of LED lights.
However, it was found that a combination of red:white (3:1) and red:white:blue (3:1:1) LEDs promoted the production of phenolic compounds and antioxidants in Thai basil.
The results showed that the growth parameters, biomass, and phenolic compounds of Thai basil were more affected by chemical fertilizer than bio-extract fertilizer.
It was also found that red:white (3:1) and red:white:blue (3:1:1) LEDs combined with the chemical fertilizers increased the phenolic compounds of Thai basil than bio-extract fertilizer.
In general, it was found that specific light conditions can enhance basil growth, but this effect is highly dependent on the other environmental conditions.
This study determined the effect of different light sources by employing soilless media (perlite:vermiculite; 1:1 ratio). After that, a design of experiment approach has been implemented to calculate the specific combination of LED lights, including: 1) red:white (1:1); 2) red:white (3:1); 3) red:blue (3:1); and 4) red:white:blue (3:1:1), with two different types of fertilizers (chemical and bio-extract). The results demonstrated no significance for the growth parameters of Thai basil from all types of LED lights.
However, it was found that a combination of red:white (3:1) and red:white:blue (3:1:1) LEDs promoted the production of phenolic compounds and antioxidants in Thai basil.
The results showed that the growth parameters, biomass, and phenolic compounds of Thai basil were more affected by chemical fertilizer than bio-extract fertilizer.
It was also found that red:white (3:1) and red:white:blue (3:1:1) LEDs combined with the chemical fertilizers increased the phenolic compounds of Thai basil than bio-extract fertilizer.
Authors
C. Lapjit, P. Bungthong
Keywords
indoor environment, chemical fertilizer, bio-extract fertilizer
Online Articles (43)