Dekalb agronomists inspect a crop of corn in South Africa in early May. Photo: Bayer Crop Science Division South Africa

SOUTH Africa’s farmers are at the back end of harvesting what is widely expected to be a record corn crop. This is a welcome boost to domestic inventories and the exportable surplus, with major Asian buyers already reported to be queuing up after an absence for much of the previous marketing year.

The corn area has remained relatively steady over the past seven years at approximately 3 million hectares (Mha), supported by constant advances in seed genetics, agrichemicals, and precision farming techniques that have enabled yield growth on a stable seeded area. Commercial corn yields in South Africa have more than doubled over the past 30 years as the adoption of these innovative production technologies becomes more widespread.

However, this year’s harvested area has increased slightly to 3.1Mha according to the latest crop estimates from South Africa’s Department of Agriculture, released at the end of June. Commercial plantings of corn in October, November and December of last year were reported at 2.72Mha, up from 2.67Mha a year earlier. This is made up of 1.67Mha of white corn and 1.05Mha of yellow corn.

Subsistence plantings, being small-scale, non-commercial operations where rural households grow corn primarily for direct family and livestock consumption, were pegged at 400,000 hectares, of which 260,000 hectares were white varieties and 140,000 hectares were yellow varieties.

According to the United States Department of Agriculture’s Pretoria-based attaché, the production season began favourably in the lead-up to, and during the planting campaign. Crop development was challenged by high temperatures and a month-long dry spell from mid-January, but that gave way to widespread rainfall in February, which got the season back on track. Above-average rainfall continued through March and April in most regions, providing the springboard for another big harvest.

Aided by a slight increase in the average yield compared to last year, 2026 corn production is expected to be a record 18.0 million tonnes (Mt). This is up from 17.3Mt in 2025 and is around 400,000t higher than the previous benchmark of 17.6Mt set in 2017.

The commercial white corn output projection of 9.3Mt is the second largest on record, surpassed only by the 2017 harvest of 10Mt. Commercial yellow corn output is expected to finish up at 8Mt, fractionally lower than the historical peak of 8.2Mt harvested last year. Subsistence production is forecast to be 700,000t, with white at 400,000t and yellow the balance.

Prices sag under harvest weight

A convergence of supply-side pressures provides a bearish outlook for domestic corn prices through to the end of 2026. The huge harvest combined with carry-in stocks of 2.9Mt puts total supply at 20.9Mt in the current South African marketing year (May to April). This is up from 18.1Mt a year earlier when the carry-in was less than 700,000t following a horror harvest in 2024.

The USDA’s Foreign Agricultural Service reported that domestic white corn and yellow corn prices had fallen by 33 percent and 23pc, respectively in the 14 months to the end of June 2026. This depressed price environment is expected to discourage any significant expansion in next season’s corn area when planting commences later in 2026.

Predominantly driven by population growth, South Africa’s domestic corn consumption has been growing consistently over the past decade. That trend is expected to continue in the current marketing year, with demand forecast at 14.2Mt, up from 13.1Mt in the 12 months to the end of April.

Domestic use is evenly distributed between the food and feed sectors. Stockfeed sector demand is projected at 7.1Mt, 14pc higher year on year, with around 84pc being yellow varieties. Food sector consumption is also forecast at 7.1Mt, 2.9pc higher year-on-year, about 88pc of which is expected to be white varieties.

That leaves an exportable surplus of 6.7Mt in the current marketing year, with the FAS bureau in Pretoria upping its international sales to 3.5Mt. This is up from 2.05Mt in the previous corresponding period and is 1Mt higher than the USDA’s estimate in the July global supply-and-demand update.

Vietnam joins African markets

In the first 10 weeks of the marketing year, exports totalled more than 700,000t, a sales pace that already exceeds the same period in each of the past two marketing years. Vietnam has emerged as the primary destination, accounting for 64pc of shipments. Zimbabwe is currently ranked second with 10pc, followed by South Korea with 8pc, and Botswana with 6pc.

Shipments to Asian destinations are expected to taper off from October as Northern Hemisphere producers begin their harvest and commence new crop exports, increasing global supply and competition. However, corn exports to countries neighbouring South Africa are forecast to remain constant throughout the marketing year.

Zimbabwe in particular has been one of South Africa’s most important regional markets in recent years, and that is expected to continue, despite a recovery in production in 2026. In the marketing year that ended on April 30, the top six corn export destinations were all neighbouring countries. Zimbabwe accounted for 39.3pc, followed by Botswana with 13.5pc, Namibia with 9.8pc, Mozambique with 9.1pc, Eswatini with 7.5pc and Lesotho with 5.6pc.

With a projected carry-out of 3.2Mt, South Africa will be building corn stocks in the current marketing year, leaving plenty of room in the balance sheet for additional exports should the Asian demand remain strong and domestic export values competitive against alternate global origins.