India banned wheat exports on Saturday, just days after saying it was targeting record shipments this year, as a scorching heatwave curtailed output and domestic prices soared to an all-time high.

The government said it would still allow exports backed by already issued letters of credit and to countries that request supplies “to meet their food security needs”.

Global buyers were banking on supplies from the world's second-biggest wheat producer after exports from the Black Sea region plunged following Russia's Feb 24 invasion of Ukraine. Before the ban, India had aimed to ship a record 10 million tonnes this year.

Although it is not one of the world's top wheat exporters, India's ban could drive global prices to new peaks given already tight supply, hitting poor consumers in Asia and Africa particularly hard.

“The ban is shocking,” a Mumbai-based dealer with a global trading firm said. “We were expecting curbs on exports after two to three months, but it seems like the inflation numbers changed the government's mind.”

Rising food and energy prices pushed India's annual retail inflation near an eight-year high in April, strengthening expectations that the central bank would raise interest rates more aggressively.

Wheat prices in India have risen to record highs, in some spot markets hitting Rs25,000 ($320) per tonne, well above the government's minimum support price of Rs20,150.

Rising fuel, labour, transportation and packaging costs are also boosting the price of wheat flour in India.

“It was not wheat alone. The rise in overall prices raised concerns about inflation and that's why the government had to ban wheat exports,” said a senior government official who asked not to be named as discussions about export curbs were private.

“For us, its abundance of caution,” he said.

Smaller crop

India just this week outlined its record export target for the fiscal year that started on April 1, saying it would send trade delegations to countries such as Morocco, Tunisia, Indonesia and the Philippines to explore ways to boost shipments.

In February the government forecast production of 111.32m tonnes, the sixth straight record crop, but it cut the forecast to 105m tonnes in May.

A spike in temperatures in mid-March means the crop could instead be around 100m tonnes or even lower, said a New Delhi-based dealer with a global trading firm.

“The government's procurement has fallen more than 50 per cent. Spot markets are getting far lower supplies than last year. All these things are indicating lower crop,” the dealer said.

Cashing in on a rally in global wheat prices after Russia invaded Ukraine, India exported a record 7m tonnes of wheat in the fiscal year to March, up more than 250pc from the previous year.

“The rise in wheat price was rather moderate, and Indian prices are still substantially lower than global prices,” said Rajesh Paharia Jain, a New Delhi-based trader.

“In fact, wheat prices in some parts of the country had jumped to the current level even last year, so the move to ban export is nothing but a knee-jerk reaction.”

Despite a drop in production and government purchases by the state-run Food Corporation of India (FCI), India could have shipped at least 10m tonnes of wheat this fiscal year, Jain said.

The FCI has so far bought a little over 19m tonnes of wheat from domestic farmers, against last year's total purchases of a record 43.34m tonnes. The FCI buys grain from local farmers to run a food welfare programme for the poor.

Unlike previous years, farmers have preferred to sell wheat to private traders, who offered better prices than the government's fixed rate.

In April, India exported a record 1.4m tonnes of wheat and deals were already signed to export around 1.5m tonnes in May.

“The Indian ban will lift global wheat prices. Right now there is no big supplier in the market,” another dealer said.