The ban from the world's second-biggest wheat producer could push global wheat prices to new peaks.
India has banned wheat exports with immediate effect, just days after saying it was targeting record shipments this year, as a scorching heatwave curtails output and local prices hit an all-time high.
Amid strong export demand, the government said on Saturday it would still allow exports for letters of credit that have already been issued and on the request from countries that are trying "to meet their food security needs".
The Indian ban could drive up global prices to new peaks and hit poor consumers in Asia and Africa.
"The ban is shocking," a Mumbai-based dealer with a global trading firm said. "We were expecting curbs on exports after 2-3 months, but seems inflation numbers changed government's mind."
Rising food and energy prices pushed India's annual retail inflation up towards an eight-year high in April, strengthening economists' view that the central bank would have to raise interest rates more aggressively to curb prices.
Wheat prices in India have risen to record high, in some spot markets to as high as $322.71 (25,000 rupees) per tonne, versus government fixed minimum support price of $260 (20,150 rupees).
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'The ban to lift global wheat prices'
Global buyers were banking on the world's second-biggest wheat producer for supplies after exports from the Black Sea region plunged following Russia's offensive in Ukraine in late February.
Earlier this week, India outlined its record export target of 10 million tonnes for the 2022/23 fiscal year that started on April 1.
The country also added it would send trade delegations to countries such as Morocco, Tunisia, Indonesia and Philippines to explore ways to further boost shipments.
But a sharp and sudden rise in temperatures in mid-March means the crop size could be smaller than expected at around 100 million tonnes or even lower, a New Delhi-based dealer with a global trading firm said.
The government estimate is for an all-time high of 111.32 million tonnes.
"The government's procurement has fallen more than 50 percent. Spot markets are getting far lower supplies than last year. All these things are indicating lower crop," the dealer said.
In April, India exported a record 1.4 million tonnes of wheat and deals were already signed to export around 1.5 million tonnes in May.
"Indian ban will lift global wheat prices. Right now there is no big supplier in the market," the second dealer said.
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