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RIMAIAgribusiness SchoolMy land

Module 12 · M7 Horticulture

Potato

Can potatoes make money on my land, and can I get the clean seed, the water and the buyer that the crop demands?

Open T-M7-01Next: M8All Majors
An orchard and pack house with fruit crates ready for the buyerPACK HOUSE

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How RIMAI is aligned

Potatoes earn far more per hectare than grain and suit small, well-watered holdings, which makes them one of the strongest entry crops for a commercially minded small farmer. They are also unforgiving: poor seed, disease or a glut at harvest can erase the margin.

Potato: the product, the five stages of the business, the unit it is sold by and where it is producedPotato: how the business runsSold by10 kg bags or tonnes per hectare1Plant seed2Grow3Lift4Grade and bag5Fresh market or processorZAZWZMBWNAProduces commerciallyImports most needsZA South Africa, ZW Zimbabwe, ZM Zambia, BW Botswana, NA Namibia

U1. The industry and where it grows

Article 43 calls the potato South Africa’s most important vegetable crop, with roughly 17% of the crop going to processing on the 2012/13 baseline. It is grown in several regions in different seasons so that fresh potatoes reach markets year-round. Article 44 explains that the industry rests on a formal certified seed potato system.

Zimbabwe produced 100,055 tonnes of potatoes from 3,450 hectares in 2025/26, an average yield of 29 tonnes a hectare, up from 26 the season before. Zambia’s 2025/26 crop forecast puts sweet and Irish potatoes together at 175,474 tonnes. Botswana restricted potato imports to stimulate local production. Botswana grew 32,569 tonnes of potatoes on 1,262 hectares in 2022/23, meeting about 74% of demand. Namibia produced 8,534 tonnes for the formal market in 2024/25 against 22,751 tonnes imported, spending N$226.6 million on potato imports in 2025.

U2. Market structure and prices

Fresh potatoes are sold through fresh-produce markets, supermarkets, wholesalers and informal traders. On the markets the price is set daily by supply, and it swings hard: when many growers harvest at once, the price collapses, and when supply is short it can double. Processors buy under contract at agreed prices for specific varieties. The commercial skill in potatoes is timing: planting so that harvest arrives when the market is short. T-M7-02 Planting Schedule is built for that decision.

U3. Imports and exports

South Africa is largely self-sufficient in fresh potatoes and exports some to its neighbours. Article 45 points out that much of the continent still imports frozen chips for fast food even though it grows the raw potato. Botswana and Namibia have used import controls on potatoes to protect local growers, which creates a protected market for local supply and an exposure when controls lift.

U4. The value chain and who buys

Potato value chain: stages from inputs to the consumer, who operates each, where the margin is taken, where a small farm enters and who buysPotato: the value chain and who buysFollow the product left to right. Ochre shows where most of the margin is taken. Green shows where a small farm can enter.1SeedCertified seedgrowers2FarmCommercialgrowers3PackWash, grade andbagMOST OF THE MARGIN4ProcessChips, crispsand frozen,under contract5MarketFresh-producemarkets andretailers6ConsumerHouseholds andinstitutionsYour entry pointFresh-produce markets, local retailers, schools and hospitals, and informal traders.Buyers you can reachFresh-produce markets and wholesalers, local retailers, institutions, informal traders,processors under contract.

The chain runs from certified seed growers to commercial growers, then to markets, retailers and processors. Article 45 shows the processing branch: chips, crisps and frozen products need specific varieties with the right dry matter and sugar levels, grown under contract. Packers wash, grade and bag potatoes for retail. For a small grower, the realistic buyers are fresh-produce markets and wholesalers, local retailers, institutional buyers such as schools and hospitals, and informal traders.

U5. Market access and barriers

Article 44 identifies the decisive barrier: seed. Potato seed carries viruses and bacterial diseases that cut yields sharply, and replanting saved seed season after season lets disease build up. Certified seed is the single most important input. Potatoes also need well-drained soil, regular irrigation and disease control against late blight. Retailers buy on size, skin finish and freedom from blemishes, and processors on variety and quality tests.

U6. The entry route

Real minimum capital. Certified seed is the largest single cost, followed by fertiliser, fungicides, irrigation and harvest labour. A hectare of potatoes costs several times as much to grow as a hectare of maize, but it can earn several times as much.

Input choke points. Certified seed of a variety the buyer wants, available at the planting date; reliable irrigation; and storage to hold the crop briefly if the market is glutted.

Offtake options. Fresh-produce markets and agents, wholesalers, retailers, institutions, informal traders and, for the right varieties, processors under contract.

Who to call. Certified seed potato suppliers in each market, the fresh-produce markets and their agents, and local processors. In Botswana and Namibia, the agricultural authorities managing import controls, whose decisions affect local prices.

The verdict for a small holding. Potatoes are one of the best-paying crops a small, irrigated holding can grow, provided the student buys certified seed every season, plans planting to miss the market gluts and lines up more than one buyer.

The South African benchmark and your market

Market Position Latest data-layer reference
South Africa Most important vegetable; certified seed system About 17% processed (2012/13 baseline)
Zimbabwe Growing yields 100,055 t from 3,450 ha at 29 t/ha (2025/26)
Zambia Sweet and Irish potatoes grouped in statistics 175,474 t combined (2025/26)
Botswana Import controls used to protect growers Potato production: 32,569 t (2022/23), 3 figures (LIB-C-BW-Potato)
Namibia Mostly supplied from South Africa Potato production, formal market: 8,534 t (2024/25), 3 figures (LIB-C-NA-Potato)

Apply it to your land

Use T-M7-02 Planting Schedule to choose planting dates that bring the harvest into a high-price window. Cost the crop in T-M7-03 Seed and Input Plan, compare fresh market and processor in T-M7-04 and prices in T-M7-05, and enter the result in T-M7-01 Enterprise Budget. Name the seed supplier and at least two buyers.

Dictionary terms introduced

Code Term Plain meaning
D-certified-seed-potato Certified seed potato Seed tubers tested and certified free of the main diseases
D-planting-window Planting window The period in which planting brings the harvest into the right season and market
D-market-glut Market glut A period when supply floods a market and prices collapse
D-late-blight Late blight A destructive fungal disease of potatoes and tomatoes
D-dry-matter Dry matter The solid share of a crop’s weight, important for processing quality

Calculators: T-M7-01 Enterprise Budget, T-M7-02 Planting Schedule, T-M7-03 Seed and Input Plan, T-M7-04 Fresh Market versus Processor, T-M7-05 Market Price Comparator.

Library sources: LIB-A043, LIB-A044, LIB-A045; LIB-P-Potato, LIB-P-Potato-IP; LIB-C-ZW-Potato, LIB-C-ZM-Potato, LIB-C-BW-Potato, LIB-C-NA-Potato.