Last updated on October 31st, 2026 at 05:51 pm
A cassava glut turns a good harvest into a financial loss because roots that cannot wait sell below what they cost to grow. Knowing why gluts happen is the first step to protecting your income when the next one arrives.
As a cassava farmer in Nigeria, I have watched gluts empty farmers’ pockets more than once.
In 2023, I surveyed 15 households in my community, and every single one lost money on that season’s crop.
This article explains what a market glut is, why Nigeria keeps producing them, and how they differ from ordinary post-harvest losses.
It also covers practical steps farmers can take before planting, and how processors can turn cheap roots into more stable income.
My own small flour and starch operation shows exactly why processing changes everything during a glut.
Table of Contents
What Is a Cassava Glut?
A cassava glut happens when far more mature roots reach the market than buyers and processors can absorb at a fair price.
Unlike grain, fresh cassava cannot sit in a warehouse waiting for prices to recover, because harvested roots start deteriorating within days.
That forces farmers to sell quickly at whatever price buyers offer, even when the price falls below their cost of production.
The problem is not too much cassava, but too little capacity to turn fresh roots into products that can wait for buyers.
How a Glut Differs From Post-Harvest Losses
Post-harvest losses are physical, covering roots that rot, bruise, or spoil between harvest and processing because of handling or storage problems.
A glut is a market failure, where even perfectly harvested roots lose their value because supply overwhelms demand.
The two problems feed each other, since farmers stuck with unsold roots during a glut also suffer more spoilage.
This guide to cassava post-harvest losses covers the physical side, including handling, transport, and storage fixes.
Why Gluts Keep Happening in Nigeria
Nigeria produced about 62.69 million tons of cassava in 2023, yet only about 5 percent entered industrial processing, BusinessDay reported in 2025.
That leaves most of the crop dependent on fresh-root markets and household processing into garri and fufu, which absorb only so much.
The problem is current, because garri prices fell 51 percent year on year amid oversupply, BusinessDay reported in November 2025.
In February 2026, the same paper reported that the price of a ton of fresh tubers had plunged 82 percent.
Harvests Arrive at the Same Time
Many farmers in a community plant with the first steady rains, so their roots mature and reach the market within the same few months.
When a whole district harvests at once, local buyers have more roots than they need, and prices fall within weeks.
Planting Expands Faster Than Processing
Government programs have pushed farmers to plant more cassava without building matching processing capacity, and Nigeria has paid for that before.
During the Presidential Initiative on Cassava from 2002, output outgrew domestic processing, causing a surplus and a price plunge, according to the Global Anticorruption Blog.
The same analysis says many farmers lost money, and some lost their farms, after planting for buyers who never materialized.
Processors Sit Far From Farms
South East Nigeria has no cassava processors of large scale, so farmers in my area are pointed toward buyers in Lagos, Ogun, and Benue.
Those processors are hundreds of kilometers away on poor roads, and transport costs can exceed the value of the roots themselves.
Read the article on cassava value chain challenges that explains how roads, power, and finance compound this distance problem.
What the 2023 Glut Did to My Community
In September 2023, I visited 15 smallholder households in Ntigha that each farmed a plot of roughly 100 by 100 meters.
A bag of fresh roots sold for less than ₦1,000 that season, and the average plot produced about ten bags.
That gave each farmer roughly ₦10,000 in income against about ₦20,000 spent on farming the plot, a loss of half their capital.
Most of those households seriously considered abandoning cassava, and many had borrowed or diverted money to plant in the first place.
The complete findings, including varieties, disease, and what the farmers told me, are in my 2023 Ntigha cassava survey.
How Farmers Can Protect Themselves From a Glut
Farmers cannot stop a glut alone, but several decisions made before and during the season can reduce how much it hurts.
- Stagger planting dates: spread planting over several weeks or months, so your roots do not all mature during the peak harvest rush.
- Use the ground as storage: mature cassava can stay in the soil, so harvest only what you can sell or process immediately.
- Sell as a group: farmers who pool roots can negotiate better prices and share transport costs to distant processors.
- Share market information: knowing prices in nearby towns before harvesting helps you avoid selling into the worst of a glut.
- Secure buyers before planting: a supply agreement with a processor protects you far better than hoping for buyers at harvest.
- Process part of your harvest: turning some roots into garri, flour, or starch gives you products that can wait for better prices.
Before signing anything, small growers are welcome to discuss likely buyers with us through the market access support available to Ngwa farmers.
Leaving roots in the ground is an old habit in my community, where families once dug only enough for a month or two.
The post on reading harvest readiness explains how to judge maturity so you can delay harvesting without guessing.
For selling tactics, our article on cassava marketing strategies covers pricing, buyer types, and distribution channels.
How Processors Can Turn a Glut Into Opportunity
A glut is bad news for farmers selling fresh roots, but it can lower raw material costs for processors with spare capacity.
During the 2023 glut, a bag of roots sold for under ₦1,000 in my community. After processing, my oven-dried starch now sells for ₦5,000 per kilogram to local buyers who eat it as usi with banga soup.
High-quality cassava flour is another shelf-stable outlet, and IITA puts its price at about 550 to 650 dollars per ton, according to its HQCF profile.
Well-dried products also wait for buyers in a way fresh roots never can, and a batch of my own HQCF remains good after a full year.
This article on making HQCF at home shows how a small processor can start with basic kitchen equipment.
The Limits Processors Face
Processing during a glut still needs cash, drying capacity, and buyers for the finished products, which small processors may lack.
Supply can also swing the other way, because BusinessDay reported that Flour Mills Nigeria shut its HQCF project over inconsistent cassava deliveries.
Gluts and shortages are two sides of the same weak link between farms and factories, and both hurt everyone in the chain.
This breakdown of my own cassava flour business costs shows what equipment, power, and capital a small processor needs.
What Would Prevent Future Gluts
Lasting solutions sit beyond any single farm, because they depend on processing capacity, information, and policy working together.
- Processing close to farms: factories within reach of farming communities would absorb surplus roots before they spoil.
- Early warning on prices and supply: shared information about plantings and expected harvests would help farmers stagger their crops.
- Policy that matches planting with processing: programs that expand cassava farming must also fund the factories and roads to use it.
- Training for farmer-processors: basic processing skills let households turn surplus roots into garri, flour, or starch themselves.
Nigeria still spent about $600 million a year importing cassava derivatives, the Central Bank told Channels TV in 2019.
Meanwhile, farmers in communities like mine were selling fresh roots at a loss for lack of nearby processors.
Through Cassava Pathway, I run training on agronomy and processing and work on market access, though the processing gap is bigger than any small organization.
Small family farms carry most of this risk, and the wider pressures on them are tackled in problems along the cassava chain.
Conclusion
A cassava glut is not a sign of too much cassava, but of too little capacity to turn roots into lasting products.
Harvests that arrive together, planting programs without factories, and distant processors keep repeating the same painful cycle.
Farmers can stagger planting, store roots in the ground, sell together, and process part of their crop.
Processors can turn cheap roots into starch and flour that wait for better prices.
If you farm or process cassava, start planning for the next glut now, well before you plant your next crop.
Frequently Asked Questions
What causes a glut in cassava markets?
A glut happens when many farmers harvest together and local buyers cannot absorb the supply. Because fresh roots spoil quickly, prices then collapse below the cost of production.
How long can cassava stay in the ground?
Mature cassava can remain in the soil for months, letting farmers delay harvesting during a glut. Roots left too long can turn woody, so dig sample plants regularly.
Is a glut good for cassava processors?
It can lower raw material costs for processors with cash, drying capacity, and buyers. Without those, processors also struggle, because finished products still need markets to absorb them.
How can farmers avoid losses during a glut?
Stagger planting, harvest only what you can sell, and sell jointly with other farmers nearby. Process part of your crop into garri, flour, or starch that keeps longer.
Chimeremeze Emeh is a tropical crop farmer and chemical engineer from Ntigha, Isiala Ngwa North LGA, Abia State, Eastern Nigeria, specializing in cassava and palm oil, with over 30 years of hands-on experience growing, harvesting, and processing cassava. He grows TMS series, TME 419, and local traditional varieties on his own farms and operates a small-scale cassava flour and starch production business through Cassava Pathway, which he founded as a CAMA-registered agribusiness in 2024. He is also the founder of Palm Oil Pathway, where he applies the same tropical farming expertise. His farms are located in Ntigha, Abia State.