Impact of rising fuel prices on developing potato producers
Estimated reading time: 4 minutes
The 2026 agricultural season has highlighted how vulnerable developing potato producers are to rising input costs, weather variability, and market instability. The sharp increase in fuel prices in April had immediate operational consequences across all production regions and exposed how cost shocks propagate through the agricultural value chain.
Fuel costs bite hard
As of April 2026, fuel prices have remained elevated, with wholesale diesel exceeding R25/ℓ and reaching roughly R26.11 inland (Gauteng). Petrol prices also remained high, with 95 unleaded at R22.53/ℓ at the coast and R23.36 inland, while 93 unleaded in inland areas averaged R23.25/ℓ. May prices were estimated to increase even further (prices not available at the time of going to print).
In addition, the price of illuminating paraffin rose by more than R11/ℓ, placing further pressure on rural households and farm workers who rely on it for energy. Although government intervention has helped to moderate the scale of these increases, the overall cost environment remains highly constrained.
For developing potato producers, these increases translate directly into higher production costs. Potato farming is heavily mechanised and depends on equipment powered by diesel.
A typical tractor consumes 10 to 15 ℓ/hr, while harvesting operations can run for 10 to 14 hr/day. At current diesel prices, daily fuel costs can easily range from R1 500 to R4 500 per machine. For producers operating multiple machines or relying on contractors, seasonal costs escalate rapidly, placing additional pressure on already thin margins.
Timing is everything
In Limpopo, where table potato production typically takes place between March and June, the 2026 season has been severely disrupted. Many producers experienced weak prices in the previous cycle, with some forced to sell at distress levels. This reduced their ability to reinvest in the next production cycle.
As the new season approached, heavy rainfall and flooding between January and March delayed land preparation in several production areas, leaving fields inaccessible and postponing mechanised operations.
While producers were still attempting to recover lost time and prepare for planting, fuel prices increased sharply in April. This created a difficult overlap: higher input costs coincided with efforts to accelerate operations following weather delays. The result was increased planting pressure, higher contractor costs, and, in some cases, reduced hectares planted. Delays in land preparation also have longer-term implications, including uneven crop establishment and yield variation.
In contrast, parts of KwaZulu-Natal (including Kokstad) and the Western Cape experienced a different seasonal pattern. A dry spell between December 2025 and January 2026 allowed for smoother harvesting conditions, enabling many producers to complete harvesting before fuel price increases took effect.
While these regions still faced high input and transport costs, the timing advantage meant that most of the fuel-intensive operations were completed before diesel prices peaked. However, irrigation costs, transport expenses, and general input inflation continued to affect overall profitability.
The ripple effect
The ripple effect of input cost increases in agriculture occurs in three stages across the value chain. When fuel or fertiliser prices increase, producers are the first to feel the impact, with immediate increases in production and operational costs that force rapid adjustments to planting, harvesting, and transport decisions.
The second stage affects contractors, input suppliers, and transporters, who adjust service fees and input prices to reflect higher operating costs. The final stage reaches consumers through gradual increases in food prices. However, producers are usually unable to pass on higher costs due to competitive market pressures, meaning they absorb a disproportionate share of the shock, while downstream price adjustments occur later and only partially reflect the true cost increases.
Conclusion
The 2026 season clearly demonstrates that developing potato producers in South Africa are operating within an increasingly complex and sensitive cost environment. Across the country, the underlying challenge remains the same: rising input costs, unpredictable weather, and volatile market conditions.
Ultimately, sustainability in potato farming is no longer only about production capacity but also about managing timing, efficiency, and resilience in a highly volatile input-cost environment. – Rachichi Marokane, Potatoes SA
For more information, email the author at rachichi@potatoes.co.za