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Mak Researchers develop Innovative Integrated Wetlands-bivalve system to Mitigate Effects of Pollution in Aquaculture farms in the Lake Victoria Basin

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By Hasifa Kabejja & Dr. Robinson Odong

Overview

The fisheries sub-sector in Uganda is crucial, supporting over 5 million livelihoods and providing essential protein for up to 17 million people, with an average consumption of 10 kg per capita. Uganda’s population is projected to double in the next 27 years, prompting the National Development Plan III to aim for a significant increase in fish production, with aquaculture expected to contribute 1 million MT by 2030. The Fisheries and Aquaculture Act 2022 emphasizes adherence to National Environmental Management principles to achieve sustainable production systems.

However, as aquaculture grows, the sector faces environmental challenges due to increased intensive production and on-farm waste, including nutrients from feed, uneaten feed, poor quality feeds, pseudofeces, escaped farmed fish, and residual chemicals. These pollutants pose risks such as habitat quality deterioration, biodiversity loss, eutrophication of waterways, and the emergence of drug-resistant pathogens.

The Principal, CoNAS, Makerere University, Prof. Winston Tumps Ireeta officially opened the workshop. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
The Principal, CoNAS, Makerere University, Prof. Winston Tumps Ireeta officially opened the workshop.

Mitigating the effects of environmental pollution from aquaculture

Through a Project titled: Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP), researchers from Makerere University in collaboration with the National Environment Management Authority (NEMA) set out to assess the effects of aquaculture facilities and practices on Lake Victoria, its catchment rivers and wetlands. The team led by Dr Ronald Semyalo from the Department of Zoology, Entomology and Fisheries Sciences (ZEFS) at Makerere University subsequently examined the effectiveness of innovative technologies, such as integrated wetland-bivalve systems, in mitigating these impacts. They also reviewed the application of national environment and aquaculture regulations in controlling environmental pollution. The study surveyed fish farms in three districts of Buikwe, Jinja, and Mukono within the Victoria Water Management Zone. Other project team members were: Dr Jerome Lugumira from NEMA, Dr Robinson Odong and Mr. Drake Ssempijja from ZEFS, Makerere University, and Ms. Ritah Namisango, Senior Public Relations Officer at Makerere. The Project was supported by the Government of Uganda through the Makerere University Research and Innovations Fund (MakRIF).

Some of the participants at the workshop at Colline Hotel Mukono. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
Some of the participants at the workshop at Colline Hotel Mukono.

During their engagement with different stakeholders in the fishing industry including the fish farmers from Jinja, Buikwe and Mukono, as well as experts from the Directorate of Water Resources at the Ministry of Water and Environment, NEMA, and the Directorate of Aquaculture Development at MAAF, the research team established that only 138 out of 380 registered fish farms were active, with 45.6% of the farms in Jinja, 35.5% in Mukono; and 18.8% in Buikwe. Overall, over 60% of the farms were inactive posing serious environmental threats.  

The PI, Dr Ronald Semyalo presenting the project findings to stakeholders. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
The PI, Dr Ronald Semyalo presenting the project findings to stakeholders.

Dissemination of the research findings

On 26th June 2024, the project team held a workshop at Colline Hotel Mukono to disseminate the research finding to stakeholders who included fish farmers from Buikwe, Jinja and Mukono, District Fisheries Officers, as well as representatives from NEMA and MAAIF. In the presentations, the team highlighted the environmental impacts of aquaculture practices and the possibility of innovatively using nature-based, environmentally friendly innovations as a mitigation measure. The presentations covered farm characteristics, water and feed management practices, water quality assessments and waste management methods. The participants engaged in discussion on the implications of the results and shared their experiences and challenges in managing aquaculture operations.

Dr Semyalo disseminating the research findings. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
Dr Semyalo disseminating the research findings.
Mr. Geoffrey Dheyongera, Principal Fisheries Officer at MAAIF delivered a presentation on the state of capture fisheries and aquaculture in Uganda. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
Mr. Geoffrey Dheyongera, Principal Fisheries Officer at MAAIF delivered a presentation on the state of capture fisheries and aquaculture in Uganda.

Key findings as disseminated by the PI

Out of the 380 farms, 119 were assessed. Below are the key findings;

  1. Environmental Impact Assessment: It was established that 81% of the farmers had not conducted Environmental Impact Assessments (EIAs) and Environmental audits. This, the researchers noted was one of the major causes of abandoned farms. 
  2. Farm Characteristics: The majority of farms used earthen ponds (66.9%) and were semi-intensive (63.6%), relying on manufactured feed and pond fertilization. Intensive farms (30.5%) exclusively used manufactured feeds, while extensive farms (4.2%) relied solely on pond fertilization.
  3. Fish Species: Nile tilapia was the top choice (96.1%) for monoculture farms, while tilapia and catfish were preferred for polyculture systems (46.9%). Intensive farms predominantly farmed Nile tilapia.
  4. Demographics: Most respondents were male (90.7%), with a median age of 35 years. The largest age group was 31 to 59 years (43.2%).
  5. Fish diseases: The research revealed a number of diseases affecting aquaculture including: lesions/wounds on the belly and cysts on the scales, skin lesions and cysts on the belly, popping eyes and white substance on fins, open skin wounds, open wounds on the head, skin lesions – greyish, swollen eyes, whitish and black patches on the skin on the pelvic fin, wounds on the head.
  6. Water Use: Fish farms primarily relied on spring water and lake water. Other sources, such as streams, wells, and rivers, were also utilized. In most cases, the water source was shared with the community. Only a small percentage of respondents acknowledged any known disease outbreaks on their farms. There was a strong association between the district in which the farm was located and the water source used. Majority of those using lake water were in Jinja District, while most of those using spring water were in Mukono District. Additionally, there was a significant association between the fish species cultured and the water source used. 
  7. Feed Management: A significant proportion of the farms heavily relied on factory-made feeds. These feeds were often used in combination with farm feed materials, such as maize bran, potato vines, yam leaves, and kitchen waste. A smaller number of farmers exclusively relied on farm-made feeds, while an even smaller percentage solely relied on pond fertilization. Manufactured feeds were used in various forms: powder and floating pellets, powder, crumble, and floating pellets, powder only, floating pellets only, and sinking pellets. The most prevalent method of feed delivery was feeding by response, while some farms also practiced feeding by ration.
  8. Waste Management: The findings indicated a concerning lack of treatment for aquaculture effluent, with majority of respondents (69%) releasing it directly into natural streams or wetlands. This highlights the need for improved environmental management practices.  Common waste sources included faecal matter and dead fish. Most farms incinerated or buried solid waste. 
  9. Water Quality: Measurements at the representative visited farms showed compliance with FAO optimal conditions for fish farms. The physicochemical parameters of the farms visited were in line with FAO optimal conditions for fish farms.
  10. Prevailing Regulatory System: A comprehensive gap analysis was conducted to supplement the findings from the survey. It aimed to identify weaknesses and areas for improvement in current policies and regulations governing aquaculture. It also evaluated the effectiveness of existing measures in addressing environmental pollution, waste management, and sustainable water use. This exercise provided a foundation for developing more robust and effective regulatory frameworks that support sustainable aquaculture practices, protect water resources, and enhance the overall environmental health of the Lake Victoria basin.
Stakeholders at the MEEP dissemination workshop. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
Stakeholders at the MEEP dissemination workshop.

Project output

***Innovative Integrated wetlands-bivalves system was developed to mitigate the impact of pollution emanating from aquaculture on the environment

Effluent from poor aquaculture practices may contain uneaten feed residues and associated components, such as suspended solids, nutrient nitrogen and phosphorus and organic materials. If discharged without any form of treatment, such effluent contributes to excessive nutrient enrichment of water bodies, a phenomenon referred to as eutrophication. Eutrophic waters have diminished ecological value, for example are low in oxygen level and can lead to fish kills. Wetland plants, such as duckweeds can aid in cleansing of aquaculture effluent of excess pollutants, through various mechanisms. For example, the plant roots adsorb suspended solids, besides offering conducive attachment surfaces for beneficial microorganisms which perform various nutrient recycling roles. The plants also uptake excess nutrients, hence reducing their levels in water. Bivalves (Molluscs) are filter feeders, hence uptake and cleanse water of detrital or solid materials, hence augmenting the roles of the plants. The integration of wetlands-bivalves system offer synergistic roles in aquaculture effluent treatment. The plants and bivalves used in the treatment can in turn be removed and used for other beneficial purposes.

Dr Jerome Lugumira from NEMA delivered a presentation on the policies regulating the sector and the gaps. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
Dr Jerome Lugumira from NEMA delivered a presentation on the policies regulating the sector and the gaps.

Presentation on policy gaps

During the dissemination workshop, Dr Jerome Lugumira, the Natural Resources Manager, Soils and Land Use at NEMA sensitized participants on the National Environment Act, 2019 with special emphasis on policy regulations for the aquaculture sector. He emphasized the need to acquire an EIA certificate before engaging in aquaculture. Highlighting the gaps in policy, Dr Lugumira noted that Schedule 4 of the National Environment Act, 2019 does not sufficiently guide the Fisheries sector; while the Physical Planning Act, 2010 is biased towards physical development planning, and the Water Act, 1997 provides for a waste discharge permit but no consideration of the extent of wastes discharged from fish farms of varying size and intensity is provided.

Dr Lugumira sensitizing participants on the policies. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
Dr Lugumira sensitizing participants on the policies.

He further noted that the National Environment (Wetlands, Riverbanks and Lakeshores Management) Regulations, 2000 do not guide on areas where aquaculture best fits, indicating that the application of the 25% wetland area beyond which one needs approval is vague.

Additionally, he explained that the National Environment (Waste Management) Regulations, 2020 refer to fish waste generally and not whether it means waste from fish or all waste from fish farms, such as off-cuts, unwanted materials, and that the National Environment (Standards for Discharge of Effluent into Water or Land) Regulations, 2020 consider effluent discharge and not that released in-situ and that disposed directly into water via cages and into soil via land-based systems.

Right-Left Dr Susan Luyiga, Dr Peter Akoll, and Ms. Ritah Namisango at the dissemination workshop. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
Right-Left Dr Susan Luyiga, Dr Peter Akoll, and Ms. Ritah Namisango at the dissemination workshop.

Dr Lugumira called for the review of the National Environment (Wetlands, Riverbanks and Lakeshores Management) Regulations, 2000, by requiring the mandated Lead Agency (WMD) to issue approvals for access to wetlands, and appending guidance on wetlands and lake areas where aquaculture is suitable. He suggested that submissions seeking approval from NEMA should have all required approvals from MAAIF, WMD and DLGs. “The assessment process should be supported by a technical officer skilled in fisheries sciences and not generalists,” he noted.

The Guest of Honour, Mr. Alio Andrew briefed participants on proper aquaculture management practices and called on Ugandans to invest in the fisheries sector. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
The Guest of Honour, Mr. Alio Andrew briefed participants on proper aquaculture management practices and called on Ugandans to invest in the fisheries sector.

Overview on the state of capture fisheries and aquaculture in Uganda

Sharing an overview on the state of capture fisheries and aquaculture in Uganda, Mr. Geoffrey Dheyongera, Principal Fisheries Officer at MAAIF, noted that the global decline/stagnation in capture fisheries stocks had increased demand for fish, calling for a boost in fish production through stock enhancement in water bodies and promotion of aquaculture. “There is need for huge investment in aquaculture. The Aquaculture Policy targets 1 million MT from aquaculture through establishment of aquaparks with intensive management activities.”

One of the technologies developed by the project team to support the mitigation of the effects of aquaculture on the environment. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
One of the technologies developed by the project team to support the mitigation of the effects of aquaculture on the environment.

Key concerns raised by the farmers

During the focused group discussions, participants highlighted a number of factors undermining the growth of the aquaculture sector. These include;

  1. Ignorance about the laws/policy guidelines
  2. Low skills and lack of exposure in aquaculture management
  3. Low numbers of technical staff to guide the farmers
  4. Inexperienced technical staff
  5. Cheating by fish seed producers
  6. Expensive and poor quality feeds
  7. Fluctuating prices of fish
  8. Competition with capture fisheries/negative attitude towards farmed fish
  9. Increased degradation of the environment which affects water quality
  10. High interest rates on loans
  11. Farmers fear for exorbitant taxes
Participants in group discussions on the factors undermining aquaculture. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
Participants in group discussions on the factors undermining aquaculture.

Proposals for improvement

  1. Government should recruit technical staff to assist farmers
  2. Thorough training of extension staff
  3. Encourage value addition to farmed fish
  4. Integrate climate smart interventions in aquaculture
  5. Policies regulating the sector should be popularized
  6. Undertake periodical review of the existing policies
  7. Encourage multi-stakeholder involvement in the implementation of policies
  8. Invest in research responsive to fish and aquaculture sector needs
  9. Monitor quality of fish feeds to satisfy farmers’ needs and environmental safety
  10. Private hatchery operators must be supported by the responsible sector agencies to ensure quality seed. Likewise, fish seed must come from certified hatcheries.
  11. Inspection of farms should be strengthened
  12. Train farmers on proper aquaculture management practices
  13. Farmers should work in groups to reduce production costs, negotiate better prices for their products, access credit facilities and maximize profits
Group discussions on aquaculture. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
Group discussions on aquaculture.

Remarks by the Guest of Honour, Mukono District CAO, and the Principal, CoNAS

In his remarks, the Guest of Honour, also Assistant Commissioner Aquaculture Management at MAAIF, Mr. Alio Andrew, guided the farmers on proper aquaculture practices, and encouraged Ugandans to invest in the fish sector. “The demand for fish has increased. Aquaculture remains a viable option,” he noted. He also raised the need to support private hatchery operators to produce quality seed, emphasizing that fish seed should only be bought from certified hatcheries. He highlighted the significance of biosecurity in aquaculture, and the need to collect appropriate data on the sector.

Group discussions on aquaculture. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
Group discussions on aquaculture.

The CAO Mukono District called for intensified training of farmers in aquaculture management practices. She advised the farmers to work in groups if they are to make reasonable profits.

The Principal, College of Natural Sciences (CoNAS), Makerere University, Prof. Winston Tumps Ireeta, acknowledged the involvement of the community in research, and appreciated the fish farmers for actively participating in the project activities. He expressed gratitude to the Government of Uganda for the continued support towards research at Makerere University. Besides other initiatives geared towards improving research at Makerere, the Government is supporting over 700 research projects at Makerere through the Research and Innovations Fund. He also appreciated MAAIF and NEMA for the technical guidance extended towards the project.

The Representative of the CAO Mukono District delivering her remarks. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
The Representative of the CAO Mukono District delivering her remarks.
A participant presenting the views of his group on the factors undermining aquaculture. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
A participant presenting the views of his group on the factors undermining aquaculture.
The Secretariat at the dissemination workshop. On the left is Ms. Catherine Nannyonga, the Project Administrator. Makerere University, Kampala Uganda, East Africa, Department of Zoology, Entomology and Fisheries Sciences (ZEFS), College of Natural Sciences (CoNAS) Mitigating the Effects of Environmental Pollution from aquaculture on freshwater resources in Lake Victoria Basin (MEEP) Mak-RIF funded project Dissemination of the research findings, 26th June 2024, Colline Hotel Mukono.
The Secretariat at the dissemination workshop. On the left is Ms. Catherine Nannyonga, the Project Administrator.

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Natural Sciences

Mak Researchers Present Findings on Biology Performance to Ministry

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Prof. Fredrick Muyodi (C) with Prof. Arthur Tugume (2nd R) and other officials at the presentation of study findings on 20th April 2026. Researchers from the College of Natural Sciences (CoNAS) and the College of Education and External Studies (CEES), Makerere University, presentation of findings of study on the persistent poor performance in Biology in national examinations to senior officials at the Ministry of Education and Sports, 20th April 2026, Kampala Uganda, East Africa.

A team of researchers from Makerere University has presented findings of a study on the persistent poor performance in Biology in national examinations to senior officials at the Ministry of Education and Sports.

The findings were shared during a dissemination meeting attended by the Ministry’s top management, led by Permanent Secretary Kedrace Turyagenda.

Some of the MoES officials that attended the presentation of study findings. Researchers from the College of Natural Sciences (CoNAS) and the College of Education and External Studies (CEES), Makerere University, presentation of findings of study on the persistent poor performance in Biology in national examinations to senior officials at the Ministry of Education and Sports, 20th April 2026, Kampala Uganda, East Africa.
Some of the MoES officials that attended the presentation of study findings.

The study, commissioned by the Ministry in 2023, was conducted by researchers from the College of Natural Sciences (CoNAS) and the College of Education and External Studies (CEES). It was spearheaded by Prof. Fredrick Muyodi as Principal Investigator, alongside Assoc. Prof. Josephine Esaete (Co-Principal Investigator) and Prof. Arthur Tugume among others.

Titled “Examining the Factors Accounting for Poor Academic Performance in Biology in Uganda’s National Examinations,” the study covered all regions of the country, engaging more than 5,200 respondents across 100 districts through surveys, interviews, and observations.

Dr. Kedrace Turyagenda. Researchers from the College of Natural Sciences (CoNAS) and the College of Education and External Studies (CEES), Makerere University, presentation of findings of study on the persistent poor performance in Biology in national examinations to senior officials at the Ministry of Education and Sports, 20th April 2026, Kampala Uganda, East Africa.
Dr. Kedrace Turyagenda.

Key findings

The research identified limited field-based learning and poor digital access as the most critical and consistent challenges affecting both Ordinary and Advanced Level students across all regions.

At Advanced Level, the lack of project-based learning was also cited as a significant constraint. Learners reported limited engagement with Biology beyond the classroom, a factor that weakens conceptual understanding and application in examinations.

The study further highlighted the role of community attitudes and perceptions in shaping student performance in the subject.

Recommendations

The researchers recommended increased investment in field-based learning, including field trips and project work, as well as expansion of digital infrastructure to improve access to learning resources.

Prof. Fredrick Muyodi (L) and Prof. Arthur Tugume (R). Researchers from the College of Natural Sciences (CoNAS) and the College of Education and External Studies (CEES), Makerere University, presentation of findings of study on the persistent poor performance in Biology in national examinations to senior officials at the Ministry of Education and Sports, 20th April 2026, Kampala Uganda, East Africa.
Prof. Fredrick Muyodi (L) and Prof. Arthur Tugume (R).

Other proposed measures include strengthening school laboratory facilities, enhancing teacher capacity through continuous professional development, promoting student engagement through academic clubs and mentorship programmes, and fostering stronger family and community support for science education.

Next steps

The research team is seeking funding to pilot targeted interventions, particularly in regions most affected by the challenges identified, and to develop a monitoring and evaluation framework to guide implementation.

The findings are expected to inform policy and interventions aimed at improving Biology performance and strengthening science education in Uganda.

Betty Kyakuwa
Betty Kyakuwa

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The “Dead Era” of pure theory is officially buried

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Department of Plant Sciences, Microbiology, and Biotechnology (PMB), College of Natural Sciences (CoNAS), Dr. Alice Nabatanzi Biotechnology Class of 2026 Product Development Centre showcase of innovations from Nutrition & Food Technology, Clinical Hygiene, Natural Wellness, Advanced Cosmeceuticals, Home & Industrial Solutions, Agri-Tech, April 2026, Makerere University, Kampala Uganda, East Africa.

By Dr. Alice Nabatanzi

At the Department of Plant Sciences, Microbiology, and Biotechnology (PMB) in the College of Natural Sciences, we are moving beyond the classroom to bring science to life. We are proud to showcase our innovative work with the Biotechnology Class of 2026. Our Product Development Centre has transitioned from theoretical research to practical, market-ready innovations. By applying advanced scientific principles, our students are developing tangible solutions that address everyday needs in nutrition, health, and industry.

Below are the latest products developed by our talented innovators:

  • Nutrition & Food Technology: Vitamin A-rich bread, banana vinegar, food syrups, and fortified bio-snacks.
  • Clinical Hygiene: Perfumes, Deodorants, Antibacterial gels, herbal toothpaste, shaving cream, and herbal mouthwash.
  • Natural Wellness: Natural formulas for gut health, pain relief, cough lozenges, and nasal decongestants.
  • Advanced Cosmeceuticals: Turmeric SunGuard patches, skin serums, toners, and anti-dandruff shampoo.
  • Home & Industrial Solutions: Shoe deodorizing sprays, surface cleaners, and scented hygiene products.
  • Agri-Tech: Natural bioindicator kits designed to monitor and improve soil health.

Through these initiatives, PMB continues to lead the way in re-engineering science for the benefit of our community and the world.

An assortment of products made by the Biotechnology Class of 2026. Department of Plant Sciences, Microbiology, and Biotechnology (PMB), College of Natural Sciences (CoNAS), Dr. Alice Nabatanzi Biotechnology Class of 2026 Product Development Centre showcase of innovations from Nutrition & Food Technology, Clinical Hygiene, Natural Wellness, Advanced Cosmeceuticals, Home & Industrial Solutions, Agri-Tech, April 2026, Makerere University, Kampala Uganda, East Africa.
An assortment of products made by the Biotechnology Class of 2026.

JONEL perfume. Department of Plant Sciences, Microbiology, and Biotechnology (PMB), College of Natural Sciences (CoNAS), Dr. Alice Nabatanzi Biotechnology Class of 2026 Product Development Centre showcase of innovations from Nutrition & Food Technology, Clinical Hygiene, Natural Wellness, Advanced Cosmeceuticals, Home & Industrial Solutions, Agri-Tech, April 2026, Makerere University, Kampala Uganda, East Africa.
JONEL perfume.


Meet the Biotechnology Class of 2026. While everyone else is still stuck in textbooks writing about “how things might work,” we’re in the lab making sure they actually do. We’ve officially moved past the days of just talking about science and stepped into the era of real-world industry. From our Product Development Centre to the global market, we are setting a new standard for Biotechnology at CoNAS. We aren’t just graduating with degrees; we’re graduating with the future in our hands.

What’s Next: We’re Just Getting Started

This is only the beginning. We’re already working on the next wave of products, from eco-friendly bio-packaging and better probiotics to smart-crop tech that will change how we eat, heal, and live. We aren’t just waiting for the future to happen we’re in the lab building it right now.

Dr. Alice Nabatanzi is a Senior Lecturer of Phytomedicine and Nutraceuticals at the College of Natural Sciences (CoNAS), Makerere University

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Transforming Food Waste into Clean Energy: Makerere University Researchers Equip Mbarara City Residents with Biogas Production Skills

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The Principal Investigator, Dr. Patience Tugume addressing participants at the dissemination workshop held in Mbarara City on 15th April 2026. Department of Plant Sciences, Microbiology and Biotechnology, College of Natural Sciences (CoNAS), Makerere University, Kampala, project “Bio-innovation of biogas, biofertilizer, and biopesticide through the utilization of bio-waste” to promote transformation of household food waste into biogas and other valuable bio-products, dissemination of research findings to stakeholders in Mbarara City, 15th April 2026, Uganda, East Africa.

*****Led by Dr. Patience Tugume from the Department of Plant Sciences, Microbiology and Biotechnology at Makerere University, a project titled “Bio-innovation of biogas, biofertilizer, and biopesticide through the utilization of bio-waste” is promoting the transformation of household food waste into biogas and other valuable bio-products. The project team disseminated the research findings to stakeholders in Mbarara City on 15th April 2026.

About the Project

A one-year bio-innovation initiative focused on converting household food waste into biogas, biofertilizer, and biopesticides has yielded promising results in improving access to clean energy and promoting sustainable agricultural practices in peri-urban communities of Mbarara City.

The project, implemented by Makerere University in collaboration with Frevasema Ltd in Mbarara, was supported by UNESCO and the International Development Research Centre (IDRC) – Canada through the Organization for Women in Science for the Developing World (OWSD). Launched in January 2024, it is led by Dr. Patience Tugume from the Department of Plant Sciences, Microbiology and Biotechnology at Makerere University.

The initiative has been implemented across five divisions of Mbarara City – Kakoba, Kamukuzi, Nyamitanga, Biharwe, and Nyakayojo – with additional field trials conducted in Masha Sub-county, Isingiro District.

Objectives of the project

The central aim of the project was to demonstrate how biodegradable household waste can be transformed into useful products, particularly biogas for cooking, as well as organic biofertilizers and biopesticides for improved crop production.

Key objectives of the project included: establishing a spin-off centre of bioreactors at the business partner institution (Frevasema Ltd) to demonstrate sustainable production of biogas, biopesticides and bio-fertilizers; training and equipping women and youth with hands-on skills in biogas production and usage; evaluation of yields from different bio wastes; and creation of linkages between academia, the private partner and rural communities in up-scaling production of biogas, biopesticides and bio-fertilizer from household/urban biodegradable wastes.

The project team with Mbarara City officials during the dissemination workshop. Department of Plant Sciences, Microbiology and Biotechnology, College of Natural Sciences (CoNAS), Makerere University, Kampala, project “Bio-innovation of biogas, biofertilizer, and biopesticide through the utilization of bio-waste” to promote transformation of household food waste into biogas and other valuable bio-products, dissemination of research findings to stakeholders in Mbarara City, 15th April 2026, Uganda, East Africa.
The project team with Mbarara City officials during the dissemination workshop.

Key Activities and Dissemination of Project Findings

The project team conducted a survey to assess community perceptions and the factors influencing the adoption of biogas as an alternative cooking energy source in peri-urban areas of Mbarara City. In addition, biodigester tanks were constructed at FREVASEMA Ltd to support training and knowledge transfer activities.

Field experiments were undertaken in Masha Sub-county, Isingiro District to evaluate the effectiveness of an integrated biofertilizer–biopesticide. Further experiments to assess biogas yield from different types of food waste were conducted at Makerere University.

The team also developed an integrated biofertilizer–biopesticide by enhancing bioslurry, a by-product of biogas production, with plant extracts known for their pesticidal properties. The effectiveness of this product was tested on the growth performance of green pepper, cabbage, and eggplant.

In line with one of the project objectives, the team also conducted hands-on training in biogas production from food waste for 35 students and 6 staff members of MAMITA Technical and Business Institute.

Students of MAMITA Technical and Business Institute undergoing training. Department of Plant Sciences, Microbiology and Biotechnology, College of Natural Sciences (CoNAS), Makerere University, Kampala, project “Bio-innovation of biogas, biofertilizer, and biopesticide through the utilization of bio-waste” to promote transformation of household food waste into biogas and other valuable bio-products, dissemination of research findings to stakeholders in Mbarara City, 15th April 2026, Uganda, East Africa.
Students of MAMITA Technical and Business Institute undergoing training.

Dissemination workshop

On 15th April 2026, the project team led by Dr. Tugume held a dissemination workshop to share findings with stakeholders and discuss strategies for scaling up the outcomes.  

Findings from the research highlight the strong potential of biogas in contributing to sustainable energy solutions, improving livelihoods, and enhancing environmental conservation through proper food waste management.

Participants who included Local Council leaders, students and staff of MAMITA Technical and Business Institute during the dissemination workshop. Department of Plant Sciences, Microbiology and Biotechnology, College of Natural Sciences (CoNAS), Makerere University, Kampala, project “Bio-innovation of biogas, biofertilizer, and biopesticide through the utilization of bio-waste” to promote transformation of household food waste into biogas and other valuable bio-products, dissemination of research findings to stakeholders in Mbarara City, 15th April 2026, Uganda, East Africa.
Participants who included Local Council leaders, students and staff of MAMITA Technical and Business Institute during the dissemination workshop.

Key research findings

  1. The application of integrated biofertilizer–biopesticide presents a viable alternative to scarce, expensive, and environmentally harmful inorganic fertilizers for enhancing vegetable productivity.
  2. The study revealed that approximately 90.7% of respondents depend on charcoal and firewood as their primary cooking fuel.
  3. While 92.1% of respondents were aware that biogas is produced from animal and plant materials, only 7.9% recognized that food waste can also serve as a feedstock, indicating limited awareness of its full potential.
  4. Banana and potato peels, as well as posho and potatoes leftovers, and green vegetable trimmings, were identified as the most commonly generated food wastes.
  5. A majority of respondents strongly agreed that biogas is a cleaner and more sustainable energy alternative compared to firewood.
  6. Key barriers to biogas adoption included inadequate technical knowledge, safety concerns regarding biogas systems, and the high costs of constructing and maintaining biodigesters.
  7. The extremely low adoption rate of biogas technology (0.3%) indicates significant underutilization despite its potential to mitigate fuel shortages.
  8. There is a prevailing perception that biogas is suitable for cooking and can effectively replace biomass fuels, given the availability of sufficient feedstock from household food waste, human waste, and animal manure.
  9. Potato and posho residues were identified as the most suitable primary feedstocks for biogas production due to their high nitrogen content, volatile solids, and total organic carbon (TOC).
  10. Effective collection and proper segregation of food waste are essential for ensuring a consistent and uncontaminated supply of feedstock for biogas production systems.
  11. Further research is recommended on integrated biogas systems that combine anaerobic digestion with other renewable energy technologies, such as solar energy or bioelectrochemical systems, to improve overall energy recovery efficiency.
  12. Vegetables treated with the integrated biofertilizer–biopesticide consistently exhibited superior performance across all growth parameters compared to those treated with inorganic fertilizers (including 5% cypermethrin pesticide) and untreated controls.
The Resident City Commissioner, Mbarara City delivering his remarks at the workshop. Department of Plant Sciences, Microbiology and Biotechnology, College of Natural Sciences (CoNAS), Makerere University, Kampala, project “Bio-innovation of biogas, biofertilizer, and biopesticide through the utilization of bio-waste” to promote transformation of household food waste into biogas and other valuable bio-products, dissemination of research findings to stakeholders in Mbarara City, 15th April 2026, Uganda, East Africa.
The Resident City Commissioner, Mbarara City delivering his remarks at the workshop.

Stakeholder engagement and appreciation of the initiative

During the dissemination workshop, Dr. Patience Tugume, the Principal Investigator, expressed gratitude to UNESCO and the International Development Research Centre (IDRC)-Canada, through the Organization for Women in Science for the Developing World (OWSD), for funding the project.  She appreciated the research team composed of Dr. Asiimwe Savina, Prof. Maud Kamatensi-Mugisha, Prof. Bazirake Byarugaba, Ms. Catherine Kiconco and Mr. Muhumuza Robert for their contribution. She equally appreciated all participants for contributing valuable information to the study.

The Principal Investigator, Dr Patience Tugume and Resident City Commissioner, Mbarara City presenting a portable biogas system to Ms. Kibibi Monic. Department of Plant Sciences, Microbiology and Biotechnology, College of Natural Sciences (CoNAS), Makerere University, Kampala, project “Bio-innovation of biogas, biofertilizer, and biopesticide through the utilization of bio-waste” to promote transformation of household food waste into biogas and other valuable bio-products, dissemination of research findings to stakeholders in Mbarara City, 15th April 2026, Uganda, East Africa.
The Principal Investigator, Dr Patience Tugume and Resident City Commissioner, Mbarara City presenting a portable biogas system to Ms. Kibibi Monic.

Stakeholders commended the project for its relevance and community impact.  

Prof. Bunny Lejju Julius from Mbarara University of Science and Technology, appreciated the project team for developing an innovation that directly addresses community needs and aligns with the principles of the competency-based curriculum, particularly the translation of academic knowledge into practical application. He advised that sustainability of the initiative could be strengthened through a multiplier approach, where the trained learners cascade the knowledge to other community members. He further recommended the identification of institutional staff who can undergo training at the spin-off centre and subsequently serve as trainers within their respective communities.

The portable biodigester system was recognized as a simple, affordable, and practical technology with the potential to provide a cost-effective alternative to charcoal and electricity. Participants noted that while resistance to change remains a challenge, continuous awareness creation is essential to promote adoption and facilitate behavioral change.

The Principal Investigator and Resident City Commissioner Mbarara City, awarding Ms. Catherine Kiconco, one of the project team members a portable biogas system. Department of Plant Sciences, Microbiology and Biotechnology, College of Natural Sciences (CoNAS), Makerere University, Kampala, project “Bio-innovation of biogas, biofertilizer, and biopesticide through the utilization of bio-waste” to promote transformation of household food waste into biogas and other valuable bio-products, dissemination of research findings to stakeholders in Mbarara City, 15th April 2026, Uganda, East Africa.
The Principal Investigator and Resident City Commissioner Mbarara City, awarding Ms. Catherine Kiconco, one of the project team members a portable biogas system.

Mbarara District Forest Officer, Ms. Ainembazi Joses, highlighted the importance of the biogas production project in environmental conservation. She noted that the initiative contributes to reducing deforestation by offering an alternative to firewood and charcoal, thereby supporting sustainable natural resource management.

The Local Council Chairperson of Mailo-Biharwe Division, Mr. Didas Katabazi, appreciated the project team for the innovative work and its potential benefits to the community. He pledged to use his office to advocate for increased government support to scale up the project.

The Resident City Commissioner of Mbarara City expressed concern over the rising levels of deforestation in the district and commended the Principal Investigator for spearheading the innovation. He reaffirmed the government’s commitment to supporting science and innovation. He emphasized the importance of integrating environmental protection with agricultural productivity, explaining that food security remains a national priority. He further noted that the project demonstrates the concept of waste valorization, where organic waste is transformed into valuable products such as biofertilizers and biopesticides, thereby enhancing agricultural productivity. He pledged to engage the Office of the President to support wider dissemination of the project outcomes. Additionally, he encouraged the trained students to act as ambassadors of the project by sensitizing communities on the benefits of biogas as an alternative source of cooking energy.

MAMITA Community receiving their award of a portable biodigester system. Department of Plant Sciences, Microbiology and Biotechnology, College of Natural Sciences (CoNAS), Makerere University, Kampala, project “Bio-innovation of biogas, biofertilizer, and biopesticide through the utilization of bio-waste” to promote transformation of household food waste into biogas and other valuable bio-products, dissemination of research findings to stakeholders in Mbarara City, 15th April 2026, Uganda, East Africa.
MAMITA Community receiving their award of a portable biodigester system.

Way forward

  1. The government should invest in constructing bio digesters for households at subsidized prices or offer them financial assistance to cater for bio digester construction.
  2. Awareness campaigns about the production and use of biogas and associated benefits should be intensified in communities to dispel the negative perceptions.
  3. Provision of technical training in operating and maintenance of biogas installations should be conducted.
  4. Sorting of wastes at household level should be emphasised to separate biodegradable from non biodegradable ones.
  5. The integrated bio-fertilizer-bio-pesticide is an effective, sustainable strategy to increase vegetable productivity while improving soil health in nutrient-limited soils.
  6. The project recommends adoption of bio-fertilizers (e.g., bio-slurry) which are affordable and can be made from kitchen and market waste to reduce dependence on expensive chemical fertilizers to improve crop growth while controlling pests safely in addition to being safe for humans and the environment.
Participants at the training venue. Department of Plant Sciences, Microbiology and Biotechnology, College of Natural Sciences (CoNAS), Makerere University, Kampala, project “Bio-innovation of biogas, biofertilizer, and biopesticide through the utilization of bio-waste” to promote transformation of household food waste into biogas and other valuable bio-products, dissemination of research findings to stakeholders in Mbarara City, 15th April 2026, Uganda, East Africa.
Participants at the training venue.

Donation of portable biodigester systems

As part of the commitment to translate research into tangible benefits, the project awarded two women and MAMITA Technical and Business Institute with portable biodigester systems for installation and use in their households and institution respectively. These systems will serve as demonstration units within the community showcasing the practicality, affordability, and impact of clean energy solutions at the household level.

The portable biodigester systems that were donated. Department of Plant Sciences, Microbiology and Biotechnology, College of Natural Sciences (CoNAS), Makerere University, Kampala, project “Bio-innovation of biogas, biofertilizer, and biopesticide through the utilization of bio-waste” to promote transformation of household food waste into biogas and other valuable bio-products, dissemination of research findings to stakeholders in Mbarara City, 15th April 2026, Uganda, East Africa.
The portable biodigester systems that were donated.

Report compiled by Dr Patience Tugume, Principal Investigator & Senior Academic Staff in the Department of Plant Sciences, Microbiology & Biotechnology at Makerere University


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