Impact of led lightings on misai kucing herbs growth based on different height exposure

Shaari, Nurfarhana (2018) Impact of led lightings on misai kucing herbs growth based on different height exposure. [Project Paper] (Submitted)

Text FK 2018 16.pdf Download (29MB)

Abstract

Orthosiphon stamineus Benth. from family Lamiaceae, is locally known as Misai Kucing is a very popular herb among Malaysian because of its health benefits such as treatment for gallstones, hepatitis, rheumatism, hypertension and etc. To meet the increasing demand for raw materials of this herb, controlled environment agriculture is an alternative and a supplement for herb production. There are various constraints in the commercial cultivation of this herb especially low light. Light is one of the most prominent factors influencing herbs quality, growth and development. Thus, LEDs (light-emitting diodes) technologies have opened up new perspectives for new sustainable solutions and highly efficient light source for greenhouse lighting. However, the most challenging for growers when growing plants under LED artificial light source were designing an array of lights adequate for the lighting needs for each plot and proper placing of the lights above the plants. Four different level of height ( 15H, 20H, 25H and 30H) of LED light were exposed to Misai Kucing in a Randomized Complete Block Design (RCBD) trial with the objective to obtain the quantitative information about the effect of different level of height of LED light exposure on growth and relative chlorophyll content of Orthosiphon stamineus. From the experiment also proved that O.stamineus exhibited a great ability in adaptation to light intensity as 16.13µmolm-2s-l which reflected by the high relatively chlorophyll content (SPAD value) is at 20H to 30H treatment.

Item Type:	Project Paper
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty:	Faculty of Engineering
Depositing User:	Ms Siti Mariam Giman
Date Deposited:	09 Oct 2025 07:39
Last Modified:	09 Oct 2025 07:39
URI:	http://psaspb.upm.edu.my/id/eprint/2187

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