The Study of Optimum Light Structures for the Production of the Aquatic Macrophyte (Wolffia globosa)

Main Article Content

Nittaya Ketkaew
Saksri Rakthai

Abstract

The objectives of this study were to (1) examine the light intensity and to (2) investigate the light period for the production of Wolffia globosa . The methodology of this research was divided into 2 steps: (1) the first step employed a completely randomized design (CRD) with 5 treatments and 4 replications including 4,000, 8,000, 12,000, 16,000 and 20,000 lux in order to select the light intensity level affecting the maximum marginal yields, and (2) the second step used a completely randomized design (CRD) with 5 treatments and 4 replications including 8, 10, 12, 14 and 16 hours per day, respectively. The data were collected twice per day as follows: temperature, pH and electrical conductivity of water quality for every 5 days for the 30-day period. The data were analyzed by means of analysis of variance (ANOVA) and Duncan's Multiple Range Test (DMRT) at the 0.05 level of significance. The results showed that the optimum light structure for the production of the aquatic macrophyte (Wolffia globosa)  was light intensity 12,000 lux with 14 hours per day of the light period which produced maximum marginal the aquatic macrophyte yield (295.20±17.96 grams) and the aquatic macrophyte dry weight yields (11.44±0.66 grams).

Article Details

How to Cite
Ketkaew, N., & Rakthai, S. (2022). The Study of Optimum Light Structures for the Production of the Aquatic Macrophyte (Wolffia globosa). Rajamangala University of Technology Srivijaya Research Journal, 14(1), 144–155. Retrieved from https://li01.tci-thaijo.org/index.php/rmutsvrj/article/view/245050
Section
Research Article
Author Biographies

Nittaya Ketkaew, Department of Environmental Technology for Agriculture, Faculty of Science and Technology, Pathumwan Institute of Technology.

Department of Environmental Technology for Agriculture, Faculty of Science and Technology, Pathumwan Institute of Technology, 833 Rama 1 Road, Wangmai, Pathumwan, Bangkok 10330, Thailand.

Saksri Rakthai, Department of Environmental Technology for Agriculture, Faculty of Science and Technology, Pathumwan Institute of Technology.

Department of Environmental Technology for Agriculture, Faculty of Science and Technology, Pathumwan Institute of Technology, 833 Rama 1 Road, Wangmai, Pathumwan, Bangkok 10330, Thailand.

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