Where does sorghum come from?

Sorghum grows where maize gives up. It is a C4 grass from the dry savanna of northeast Africa, with a deep fibrous root system, a waxy cuticle that limits water loss, leaves that roll to reduce exposure, and the ability to stop growing during a drought and resume when rain returns rather than dying. It also tolerates heat, brief flooding and soils too alkaline or too shallow for other cereals. Those traits define its geography twice over: it is the staple cereal of the semi-arid tropics, and it is the drought-insurance grain on the dry margin of the world's maize belts.

In 2024 United States produced 8.7 million tonnes, 14% of the world's 64.2 million tonnes (FAOSTAT), from the southern plains of Kansas, Texas and Oklahoma where rainfall is too unreliable for corn. Nigeria was second with 10% and India and Sudan tied on 8.4%, followed by Mexico at 7%. That top five contains two completely different industries. Nigeria, Sudan, Ethiopia, Niger, Burkina Faso, Mali and Cameroon grow sorghum as food, on smallholdings, for porridge, flatbread and beer, and almost none of it is sold across a border. The United States, Australia, Argentina, Brazil and Mexico grow it mechanically as a feed grain and a rotation crop, and it is their crop that supplies world trade.

India sits between the two. Its jowar is a traditional food grain of the Deccan, increasingly grown in the post-monsoon rabi season for both food and fodder, and its area has been declining for decades as irrigation and higher-value crops displace it. 116 countries reported a crop in 2024, and everything outside the top ten still amounted to 27%, which reflects how many African and Asian countries grow sorghum somewhere.

The world total has been broadly flat with sharp annual swings: production changed -6% over the ten years to 2024, but +13% over five and +12% in the last year alone (FAOSTAT), because so much of the crop is rain-fed in variable climates. Within that, Bolivia grew at +10.4% a year over the decade, Australia at +6.7% and Brazil at +6%, while Mexico contracted at -6% and United States at -2.3%.

The sorghum trade is the most lopsided of any major grain, on both sides at once. In 2024 United States exported $1.6 billion, 58% of the world's $2.7 billion in export value, and Australia supplied 23% and Argentina 9.6% (CEPII BACI). Those three countries account for the overwhelming majority of the trade, and everything below them, including France and Brazil, is marginal. On the buying side China took 81% of the world's $2.7 billion of imports, a degree of single-buyer concentration with no parallel in the grain complex; Ethiopia and Japan were a distant second and third at 1.6% and 1.4%.

China buys sorghum for two distinct reasons. It is a feed grain that has at times fallen outside the tariff-rate quotas that constrain corn imports, which made it an attractive substitute for compound feed mills in Guangdong and the coastal provinces. And it is the traditional raw material for baijiu, the distilled spirit made in Sichuan, Guizhou and Shandong, which needs a specific tannin and starch profile that imported sorghum can supply. The result is that a policy decision in Beijing or a tariff change on a single trade lane can move most of the world's sorghum trade at once, which is exactly what happened in 2018. Meanwhile the countries that grow the most sorghum per head, in the Sahel and the Horn, appear in the import table too: Ethiopia, Eritrea, Sudan and South Sudan all buy sorghum, usually as food aid or emergency supply during a drought or a conflict, which is a completely different market from the feed and distilling trade.

Sorghum has no futures contract anywhere. It is priced as a corn substitute, and the mechanism is simple: an export elevator at the United States Gulf quotes sorghum as a basis, a premium or discount, against the nearby Chicago corn futures contract, and buyers compare the delivered cost of sorghum with the delivered cost of corn on an energy and protein basis. When Chinese demand is strong the basis goes to a large premium over corn, because there is no alternative supplier of scale; when Chinese demand disappears the basis collapses to a discount and the crop goes into domestic feedlots and ethanol plants instead.

The series charted on this page is US No. 2, Gulf export, an export quotation for United States number two yellow sorghum loaded at the Gulf. In August 2020 it stood at $189.5/t, up 28% from a year earlier (World Bank Pink Sheet). Its nominal record was $302.5/t in August 2011, during the North American drought of that summer, and over ten years the series has changed +32% and over five +3%. The inflation-adjusted picture is very different from the nominal one: the real high was $918.3/t in October 1974, during the grain shock of the 1970s, against a series low of $35/t in March 1960 and a start in 1960.

Three things qualify that quote. First, it is FOB at the United States Gulf, so it is a price at the loading elevator: an importer in China pays ocean freight, and the delivered cost swings with panamax rates and with Panama Canal transit conditions. Second, the grade is United States number two, defined by test weight, moisture, broken kernels and foreign material, and food-grade white sorghum for milling trades separately and at a premium. Third, and most important, this is an export price for a grain that most of the world's growers never sell. The farm-gate price for red sorghum in a Sahelian market is set by local harvest, transport cost and food aid deliveries, and it has almost nothing to do with the Gulf quotation.

China takes the large majority of internationally traded sorghum, so its buying decisions are the market. Because Chinese demand comes from both feed mills substituting for corn and distilleries making baijiu, it responds to domestic corn prices, tariff-rate quota policy and spirits demand at once. Trade measures aimed at the United States, such as the anti-dumping investigation and tariffs of April 2018, do not reduce world supply; they redirect cargoes, collapse the Gulf basis and lift Australian and Argentine premiums instead.

Sorghum is bought as a corn substitute in feed rations and in ethanol plants, so its price is anchored to corn and moves within a band around it. Sorghum has slightly less digestible starch than corn unless it is steam-flaked, so it normally trades at a discount; when export demand appears it can trade at a premium and domestic feeders switch back to corn. Anything that moves the Chicago corn market therefore moves sorghum with it, before any sorghum-specific factor applies.

Almost all United States sorghum is dryland, grown in Kansas, Texas and Oklahoma precisely because the rainfall is too unreliable for corn. The crop tolerates drought better than maize but not indefinitely: a dry summer cuts yields sharply and a severe one causes abandonment of planted area before harvest. Because a single country supplies most of the export trade, a plains drought is felt directly in the world market rather than being absorbed by other suppliers.

Australia is the second exporter and its sorghum is a summer crop planted from September to January on the Darling Downs in Queensland and in northern New South Wales, harvested from February. It is therefore counter-seasonal to the northern hemisphere and fills the gap between United States harvests. Its size depends on summer rainfall and on stored soil moisture at planting, and when the Australian crop is large it competes directly for Chinese demand.

The largest African producers grow sorghum for food, so shocks there change consumption and food security rather than export prices. Repeated Sahelian droughts since the late 1960s and the war in Sudan since April 2023 have cut planted area and harvests in countries where sorghum is the staple cereal. The effect on the world market shows up as import demand for food aid rather than as any change in the Gulf quotation.

Sorghum's field risks are biological and hard to insure against. The sugarcane aphid became a serious pest of grain sorghum across the United States and Mexico in the 2010s and requires scouting and treatment. In Africa the parasitic witchweeds of the genus Striga attach to sorghum roots and can devastate a crop on depleted soils, affecting tens of millions of hectares. Birds strip ripening panicles, which is why high-tannin, bird-resistant varieties exist despite their lower feed value.

Beyond feed, sorghum goes into fuel ethanol in the United States, where it qualifies as an advanced biofuel feedstock under certain conditions, into baijiu distilling in China, and into a growing gluten-free food market that uses white, tannin-free, food-grade grain. These outlets are smaller than feed but they are less price-elastic, and food-grade contracts are agreed before planting, which supports acreage in a way commodity feed demand does not.

Sorghum is a low-value bulk cargo shipped a long way, so ocean freight and canal transit are a large part of the delivered cost. When panamax rates rise or Panama Canal draft restrictions force longer routings, Australian and Argentine sorghum gains against United States Gulf cargoes for Asian buyers. The Gulf basis absorbs this: it widens or narrows to keep American grain competitive, which is why the FOB quotation can move without any change in the underlying corn market.

Sorghum is planted after the soil warms, because the seedling is sensitive to cold, and it takes roughly 90 to 140 days from planting to harvest depending on variety and latitude. It is sown shallow into a firm seedbed at relatively low seeding rates, tillers to fill gaps, and produces its grain in a panicle at the top of the stem rather than in a cob or a spike. The plant's drought strategy is to slow down rather than to die: under water stress it rolls its leaves, closes stomata and can pause development for a fortnight, then resume when rain arrives, which is why it produces something in years when maize produces nothing.

Type matters as much as variety. Grain sorghum is the short, high-yielding crop grown for the seed. Forage sorghum and sudangrass hybrids are grown tall and cut green for silage or grazing. Sweet sorghum has a juicy stem with high sugar content and is crushed for syrup or fermented for ethanol; it was promoted in the United States from the 1850s as a domestic sugar source under the name Chinese sugar-cane. Broomcorn is grown for the stiff fibers of its panicle. Within grain sorghum, white and tan varieties with no condensed tannins are grown for milling and food, while red and bronze grain goes to feed, and high-tannin varieties are planted where birds are a serious problem, at a cost in digestibility.

Harvest is by combine once the grain has dried below about 14 percent moisture, sometimes after a desiccant is applied to even up ripening. The grain is stored much like maize and moves through the same country elevators and rail system. For feed, sorghum's starch is protected by a protein matrix that makes it less digestible than maize when fed whole, so it is usually rolled, ground or steam-flaked to open the kernel, and steam-flaking is standard in feedlots that use it heavily. For food, the grain is decorticated to remove the bran and then milled into flour or coarse semolina.

The by-products are used rather than discarded. Sorghum stover is a valuable dry-season fodder across Africa and India, which is one reason farmers keep growing tall varieties that yield less grain. Distillers' grains from ethanol production and from baijiu distilleries go to livestock feed, and the bran removed in decortication is rich in antioxidants and sold as a food ingredient.

Sorghum has two lives. In the Sahel, Sudan, Ethiopia and parts of India it is a human staple: ground into flour for the thick porridges known as tô and ugali, fermented into the flatbread injera alongside teff, rolled into jowar bhakri, steamed as a couscous, and brewed into traditional opaque beers across West and southern Africa. That food use accounts for most of the crop in the countries that grow the most of it, and it is why African production statistics move with rainfall and conflict rather than with world prices.

In the Americas, Australia and China it is an industrial grain. Most of it is fed to cattle, pigs and poultry, usually processed to improve starch availability. In the United States a share goes to fuel ethanol; in China it is the base grain for baijiu, where the tannin and starch profile of specific varieties is part of the product specification. Smaller but growing outlets include gluten-free flour and snacks, pet food, birdseed and, in the case of broomcorn, brush fiber. Forage and sweet sorghum are separate crops grown for silage and syrup respectively and are not counted in the grain figures on this page.

The export chain is short and unusually thin. United States sorghum moves from farm bins in Kansas, Texas and Oklahoma by truck to country elevators, then by unit train to export elevators at Corpus Christi, Houston and other Texas Gulf ports, and out in panamax vessels bound for China. Australian sorghum comes off the Darling Downs by road to Brisbane; Argentine sorghum moves down to the up-river terminals around Rosario. Discharge is at Chinese ports serving the coastal feed mills and, for distilling grain, moving inland to Sichuan, Guizhou and Shandong.

The subsistence chain has no comparable infrastructure. Sorghum grown in Niger, Mali, Burkina Faso, northern Nigeria and Sudan is threshed by hand or with small mechanical threshers, stored on-farm in granaries, milled locally, and traded in regional markets that may be hundreds of kilometers from a paved road. Cross-border flows within West Africa and the Horn are substantial but poorly captured in customs statistics, and the visible international trade in these countries is largely humanitarian purchasing.

The single points of failure are concentration on both sides of the trade. With United States supplying 58% of world export value and China buying 81% of world imports in 2024 (CEPII BACI), the market is effectively one lane. A drought on the United States southern plains removes most of the exportable surplus; a Chinese tariff or a regulatory decision removes most of the demand; and there is no third party large enough to absorb either shock. Physically, the Texas Gulf export elevators and the Panama Canal transit are the constrained links, and for the food-security half of the picture the fragility is different again: sorghum-dependent regions have thin markets, little storage and no futures market at all to signal a coming shortage.