Between roughly 1948 and 1973, the Kano railhead — and the smaller railheads at Malam Madori, Dawakin Kudu and Funtua — were piled with conical pyramids of jute-sacked groundnuts, each pyramid built from 9,200 sacks of 80 kg each, sometimes as much as 700 tonnes a pyramid. At the peak, around 1961, more than 50 pyramids stood at Kano alone and Nigeria was the world's largest groundnut exporter, ahead of Senegal, the United States and India. The pyramids appeared on the back of the ₦1 note, on tourism posters in Lagos, on stamps, and on the original five-naira coin.
Groundnut (*Arachis hypogaea*, originally domesticated in Bolivia) reached northern Nigeria through the trans-Saharan trade in the 16th century. It became a serious cash crop after 1912 when the Lagos–Kano railway was completed and the British Cotton Growing Association's failed cotton scheme freed up smallholder labour. The trade was organised through Hausa middlemen (*lafia* traders) and the Marketing Boards established after 1947 — the Groundnut Marketing Board, dissolved into the Northern Nigeria Marketing Board in 1954.
## The collapse (1973–1980)
Three shocks killed the pyramids:
- The 1973 Sahelian drought devastated the northern groundnut belt — output fell by 60% in two years.
- The 1975 outbreak of groundnut rosette disease wiped out farms across Kano and Katsina.
- Most importantly, the 1973 oil boom rendered every primary-export commodity economically irrelevant — see Dutch Disease & the Death of Agriculture. The Marketing Boards were dissolved in 1986 under SAP; the railway corridor that moved the pyramids was abandoned; the groundnut crushing mills of Kano (Northern Nigeria Oil Mills, Royal Niger Mills) shut by 1995.
In 2024 Nigeria produced roughly 3 million tonnes of groundnut — most of it consumed locally as *kuli-kuli*, *kwosai*, *suya* seasoning and groundnut oil. Nigeria exported less than 5% of the crop. Senegal, with one-tenth of Nigeria's land, was a far larger groundnut exporter.
## Why no F.O.O.D rent
Like kola and yam, groundnut has not become a F.O.O.D-style protected sector — the processing scale is too small, the crop too geographically dispersed, the political economy of northern smallholders too diffuse to lobby for a tariff wall. The result is the F.O.O.D mirror image: no protection, no investment, no exports either. Groundnut went from world leadership to near-irrelevance not because the soil failed but because the country's industrial-policy attention moved to crude oil, and never came back.