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Cassava diseases threaten success of proposed ethanol plant

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Reduction in cassava production due to cassava mosaic disease (CMD) and cassava brown streak disease (CBSD) threatens food security. 

As Uganda takes steps to make cassava an eco-friendly feedstock for ethanol production, agricultural experts say the crop still faces disastrous diseases that have perennially caused severe yield losses and threatened food security.

Dr Titus Alitai, a principal scientist at the National Agricultural Research Organization (NARO) contends that any reduction in cassava production due to cassava mosaic disease (CMD) and cassava brown streak disease (CBSD) threatens not only food security, but would also cause havoc to government plans of supporting a project that seeks to utilize cassava pulp for ethanol production.

At the tail end of last year, President Yoweri Museveni pledged government support for a project in the northern part of the country that produces denatured ethanol stoves and that is intended, in the long term, to establish ethanol derived from cassava a sustainable alternative cooking fuel.

Taking a long view, Museveni noted that if the project obtained a firm footing, Uganda would be able to export fuel made from cassava to other countries in the region.

But that depends on a consistent supply of cassava, which has struggled to overcome disease issues. CMD and CBSD still remain a threat and that status quo has been helped by poor farming practices, such as recycling seed cuttings beyond recommended times.

“On the CMD and CBSD mitigation front, there have been inroads made in recent years, principally with the development and distribution of improved cassava varieties such as NASE14, NASE 19 and NARO CASS 1 to farmers by the National Agricultural Research Organization,” Alitai said.

It is not clear, however, if some of the resistant cassava varieties that will likely be supplied by the National Crops Resources Research Institute, which is one of the six National Agricultural Research Institutes mandated to conduct, carry out research and knowledge generation on how to deal with crop diseases such as CMD, will be genetically modified (GM) cassava.

Research findings from the National Agricultural Research Organization have shown that GM cassava is resistant to CMD and CBSD.

Many scientists across the East African region have advocated for the adoption of GM cassava as a means of sustainably enhancing Uganda’s food security. But the country’s environment policy regarding the adoption of biotechnology has in recent years been erratic, if not checkered.

In 2017, a biotechnology and biosafety bill was passed, but it was referred back by the President for adjustments. It was passed yet again in 2018, but with stern liability sections that analysts say impede biotechnology development in the country.

In Uganda, CMD accounts for an estimated annual yield loss of more than 60 million US dollars and it has, by all accounts, been singled out as the biggest economic constraint to the production of cassava in sub-Saharan Africa.

The impact of CMD on Uganda’s cassava production was not considered grave until the late 1980s when its devastating effect was experienced in the north-west of the country. The outbreak caused the disappearance of a cassava landrace called Ebwanatereka, which was widely distributed in the country in the 1980s.

Cassava brown streak disease, on the other hand, is thought to be the most devastating cassava disease in southern, eastern and central Africa. It reportedly can cause up to 100% yield loss.

As a means of combating CMD, a Ugandan computer scientist Dr Jennifer Rose Aduwo has developed a computer application based on an artificial neural network that can automatically detect the disease.

Dr Jennifer Rose Aduwo

Aduwo, the Dean of the Uganda Management Institute’s School of Distance Learning and Information Technology, revealed that the application has already provided an accurate rate of 97.2% for CMD’s classification and 88% for the disease’s severity grading.

“This model will help reduce the high cassava yield losses Uganda suffers annually due to CMD,” she said.

“What is expected is that timely and fast information provided by the model from farmers or agricultural extension workers, at the click of a button from an internet-connected smartphone which has captured cassava leaf images from gardens for the disease’s detection/classification, will be sent to a team at the National Crops Resources Research Institute at Namulonge who will, in turn, develop effective disease contingencies and supply CMD resistant varieties to affected regions across the country,” she added.

“The process of capturing the cassava leaf image from the cassava garden and sending to a computer server for CMD detection/classification takes less than a minute, provided there is an internet connection.”

Alitai said Aduwo’s app will improve on the efficiency and scale at which the CMD disease’s data is collected.

“With her app, we shall be able to know which areas around the country need speedy interventions. Previously, we did surveys, but the processing of data took months but with this digital platform, data on CMD will be availed within a short time.”

In the past 10 years, several research papers on the CMD by Aduwo have been published and have received golden opinions, for good measures.

Her research publication journey on automating CMD set forth in 2010 when Google gave Aduwo and her two research colleagues a $10,000 grant. At length, they produced the paper entitled “Automated learning-based diagnosis of CMD”.  Several other papers followed in subsequent years.

Original Post: New Vision

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FARM NEWS

Govt moves to set up food and agriculture regulatory authority

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Agriculture minister Frank Tumwebaze tabled the Food and Agriculture Regulatory Authority Bill, 2026, for first reading in Parliament on August 25, 2026. (Credit: Maria Wamala)

The Bill has been referred to the Committee on Agriculture for scrutiny. The proposed authority will regulate the manufacture, processing, importation, exportation, distribution, transportation, advertisement, labelling, storage, sale and supply of veterinary medicines, agricultural chemicals, veterinary equipment and devices.

KAMPALA – The Government has proposed the creation of a food and agriculture regulatory authority to bring food, animal medicines, agricultural chemicals and related products under one regulatory framework.

Agriculture minister Frank Tumwebaze tabled the Food and Agriculture Regulatory Authority Bill, 2026, for first reading in Parliament on August 25, 2026.

The Bill has been referred to the Committee on Agriculture for scrutiny. The proposed authority will regulate the manufacture, processing, importation, exportation, distribution, transportation, advertisement, labelling, storage, sale and supply of veterinary medicines, agricultural chemicals, veterinary equipment and devices.

It will regulate food and feed manufacturing, processing and distribution, oversee food and feed safety, develop standards, inspect and certify agricultural inputs, and establish traceability systems for regulated products.

The Bill’s memorandum presents a troubling picture of the current food and agricultural regulatory system, stating that the country is “flooded with counterfeit substandard veterinary medicines and agricultural chemicals.”

It cites concerns over medicines and chemical residues, aflatoxins, harmful microorganisms and heavy metals in food and feed, warning that such contaminants compromise public health and the safety of agricultural exports.

Members of Parliament during Plenary on Tuesday. (Credit: Maria Wamala)The memorandum attributes the problem in part to “fragmented regulation”, which it says has resulted in weak and uncoordinated regulation by multiple agencies, duplication of efforts and inefficiencies in enforcement.

It argues that the absence of a single body overseeing the food and agriculture value chain “undermines the effectiveness of regulation” and creates uncertainty for stakeholders.

The proposed authority will inspect food premises, certify meat for public consumption, inspect and certify fish, regulate processed and semi-processed food, and oversee the storage and transportation of food.

The Bill seeks to regulate food packaging, labelling and advertising, while prohibiting the use of radioactive materials, heavy metals and banned substances in food. It provides for residue monitoring to detect harmful substances in food products.

Members of Parliament during Plenary on Tuesday. (Credit: Maria Wamala)

For agricultural chemicals, the Authority will license manufacturers, distributors, fumigators and commercial applicators. It would regulate the import and export of chemicals, as well as their packaging and labelling, storage, sale and advertising.

The Authority will have powers to recall agricultural chemicals and deal with prohibited, banned, restricted, falsified or adulterated products.

The Bill proposes inspectors and analysts with powers to access establishments, conduct sampling and analysis, seize adulterated products and oversee the disposal of obsolete, banned, prohibited and expired products.

Inspectors will, in certain circumstances, order the detention, return or destruction of non-compliant consignments.

The proposed authority will be a body corporate with perpetual succession. Its functions include the registration of veterinary medicines, veterinary devices, veterinary equipment, agricultural chemical application equipment and agricultural chemicals for use in Uganda.

The authority will be governed by a nine-member board appointed by the minister. The board will comprise a chairperson, six members with expertise in veterinary medicine, agriculture, pharmacy, standards and environmental science, and two representatives of farmers nominated by a recognised farmers’ federation.

The Bill contains 13 parts, 101 clauses and three schedules. It seeks to amend the Dairy Industry Act, Fisheries and Aquaculture Act, National Coffee Act and Animal Feeds Act, while repealing the Agricultural Chemicals (Control) Act and the Food and Drugs Act.

The proposed law seeks to give the Minister power to issue written policy directions to the authority.

The Government argues that the new framework would improve the quality and safety of agricultural inputs, strengthen consumer protection and help Uganda gain access to regional and international agricultural markets.

The Bill moves to the Agriculture Committee, where MPs are expected to examine its regulatory, institutional and enforcement provisions before it returns to the House for further consideration.

The public, including experts, are expected to provide their views on the Bill.

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FARM NEWS

Concern over low cassava yields in Bukedi region

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For decades, cassava has been more than just a crop in Bukedi Sub-region in eastern Uganda. It has served as a lifeline, providing a reliable source of food during droughts, a key source of household income and an integral part of the region’s cultural identity.

Across the districts of Budaka, Kibuku, Butebo, Pallisa and parts of Butaleja, cassava gardens once stretched across vast expanses of land. Families harvested the crop throughout the year, processed it into flour and sold surplus produce in local markets.

Today, however, those fields are shrinking. Farmers are increasingly abandoning cassava cultivation in favour of crops they consider more profitable and less risky, raising concerns about food security and the future of one of Bukedi’s traditional staples.

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Parliament gives Jinja land office three months to clear backlog

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Some staff of the Jinja Ministry Zonal Office meet members of the Parliamentary Committee on Land on August 27, 2026. PHOTO/TAUSI NAKATO.

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