Growth Inhibition of Algae in Aquaculture Fishponds Using Banana Peel Powder: A Mesocosm Experiment

Authors

  • Linton F. Munyai

    Aquatic Systems Research Group, School of Biology and Environmental Sciences, University of Mpumalanga, Nelspruit, 1200, South Africa
  • Farai Dondofema

    Aquatic Systems Research Group, Faculty of Science, Engineering and Agriculture, Department of Geography and Environmental Sciences, University of Venda, Thohoyandou, 0950, South Africa
  • Thendo Mutshekwa

    1. Department of Freshwater Invertebrates, Albany Museum, Makhanda (Grahamstown), 6140, South Africa; 2. Institute of Water Research, Rhodes University, Makhanda (Grahamstown), 6140, South Africa; 3. School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, 2050, South Africa
  • Jabulani R. Gumbo

    1. Faculty of Science, Engineering and Agriculture, Department of Earth Science, University of Venda, Thohoyandou, 0950, South Africa; 2. Research and Innovation Department, Bindura University of Science Education, P/Bag 1020, Bindura, Zimbabwe
  • Slobodan Zlatković

    Agency for Giving Ecological Advices “Akvatorija”, 11090, Belgrade, Serbia
  • Mulalo I. Mutoti

    Department of Environmental, Water, and Earth Sciences, Tshwane University of Technology, Pretoria, 0083, South Africa

DOI:

https://doi.org/10.30564/jees.v7i1.6910
Received: 18 July 2024 | Revised: 13 August 2024 | Accepted: 19 August 2024 | Published Online: 18 November 2024

Abstract

Cyanobacterial blooms or algae problems in aquaculture fish–ponds are becoming a big concern to fish farmers due to reduced production of fish. Although several studies have been conducted around the globe focusing on cyanobacterial blooms in oceans and lakes, little has been done on inhibition of algal biomass impacting fish–ponds in aquaculture industry. The present study assessed the potential of banana peel ashes and potassium sulphate on algal growth inhibition within fish–ponds based on a six–weeks mesocosm experiment conducted with varying ash concentrations (i.e., 2, 4, 6, 8, 10 g·L−1). This study analysed differences among treatments for the various nutrient variables (nitrates, ammonium and phosphates) at the end of the experiment. The significant experimental differences in physicochemical variables among the study weeks (i.e., 1–6 weeks), treatments (three levels, including controls) and ash concentrations using factorial repeated measures ANOVA were further tested. Moreover, algal growth was determined in order to test the efficiency of treatment n inhibiting algal growth by measuring chlorophyll–a concentration across 6 weeks. Banana peel ashes performed significantly well on inhibition of algal growth than potassium sulphate, except for controls. However, no clear patterns between pH and conductivity were observed throughout the experiment. The present study found that banana peel ashes do not have notable effects on water quality variable, particularly physicochemical parameters, which did not significantly change from first week of experiment. With banana peel ashes being the best inhibitor according to the findings of the present study, further studies are required to investigate the effects of banana peel ashes on fish within the ponds.

Keywords:

Physicochemical Variables; Nutrients; Banana Peel Ash; Potassium Sulphate; Chlorophyll-a

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How to Cite

Linton F. Munyai, Dondofema, F., Mutshekwa, T., Jabulani R. Gumbo, Zlatković, S., & Mulalo I. Mutoti. (2025). Growth Inhibition of Algae in Aquaculture Fishponds Using Banana Peel Powder: A Mesocosm Experiment. Journal of Environmental & Earth Sciences, 7(1), 113–122. https://doi.org/10.30564/jees.v7i1.6910

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Vol. 7 , Iss. 1 (January 2025): In Progress

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Article

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Copyright © 2025 Linton F. Munyai, Farai Dondofema, Thendo Mutshekwa, Jabulani R. Gumbo, Slobodan Zlatković, Mulalo I. Mutoti

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This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.

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