Effect of The Light Power and Lamp Color on Growth of Pak Choi Microgreens (Brassica junicea L.)

Department of Agrotechnology, Faculty of Agriculture and Animal Science, University of Muhammadiyah Malang, 246 Tlogomas Street, Malang, Indonesia

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Abstract

Microgreens have a higher nutrient content, thus providing significant nutritional benefits for consumers. Plant growth is influenced by various environmental factors, such as humidity, air circulation (aeration), light intensity, and the spectrum or type of light plants receive in plant cultivation. This study aims to determine the strong interaction of illumination and light colour on the growth of Pak choi microgreens (Brassica juncea L.) plants. This study used a two-factor plot strip. Factor 1 was the light power (W), which consists of W1 6 watts, W2=10 watts, W3 = 14 watts, and 18 watts. Factor 2 was the color of the lamp (P) which consists of P1 = dark blue light, P2 = light blue light, P3 = dark red, P4 = pink, P5 = combination (dark blue, dark red), P6 = combination (light blue, pink), P7 = combination (dark blue, pink), P8 = combination (light blue, dark red). A combination of treatments repeated 2 times. Observation variables included plant height, number of leaves, wet weight, total chlorophyll, and antioxidant test. This study showed that the quality and intensity of light influence the physiology of microgreens plants. This research contributes to optimizing artificial lighting-based microgreens cultivation techniques.