Phytotoxicity of Untreated Desiccated Industry Wastewater on the Germination of Vigna radiata (Mung Beans) and Root Growth of Allium cepa (Onion Bulb)
Jhester S. Hornejas *
University of Mindanao Digos College, Roxas Extension, Digos City, Philippines
Ronald A. Diaz
*
Alchesay High School, Whiteriver, Arizona, 85941, USA.
*Author to whom correspondence should be addressed.
Abstract
Aims: The experiment was done to assess the phytotoxicity of untreated desiccated coconut industry wastewater on the germination (DCIWw) of Vigna radiata (mung beans) and the root development of Allium cepa (onion bulb).
Study Design: The researchers employed a laboratory experimental design, as the necessary data had to be obtained through experimentation in the Science/Biology laboratory
Place and Duration of Study: The study was conducted in Region XI, Philippines, between May 2024 and April 2025.
Methodology: The study employed Analysis of Variance (ANOVA) to determine the significant differences in the germination rate of Vigna radiata (mung beans) and root length of Allium cepa (onion bulb) among the various concentrations of DCIWw.
Results: The findings revealed that the highest mean germination rate occurred at 0% concentration of DCWw, while no germination was observed at 100% concentration. Conversely, the highest mean root length was recorded at 0% concentration, and the lowest at 100% concentration of DCWw. Further, a considerable was found in the germination rate of Vigna radiata (mung beans) and the root length of Allium cepa (onion bulbs), with p-values of .00
Conclusion: In conclusion, DCIWw was found to be phytotoxic to Vigna radiata (mung beans) and allium cepa (onion bulb) as the amount of concentration elevated. Furthermore, the results of this research may provide a foundation for enhancing agricultural and environmental awareness, since DCIWw presents a potential risk to soil fertility and crop productivity owing to its phytotoxic characteristics. In addition, a strict regulatory framework may be enforced by relevant authorities to ensure the proper treatment and discharge of industrial wastewater. Finally, future researchers may explore the potential of DCIWw as natural herbicide, given its ability to inhibit plant germination and root development.
Keywords: Phytotoxicity, germination rate, root length, desiccated, wastewater