Chan's Personal Blog

Rice prices in Thailand, the world's top exporter, surged to $1,000 a tonne on Thursday as concerns about food security first triggered by a handful of Asian export bans spread as far as the United States.

This week's five percent jump takes prices to nearly three times their level at the start of the year, intensifying fears of social unrest in Asia as millions of the region's poor find themselves struggling to pay for staple goods.

The surging price of fuel and food, which some analysts attribute to panic buying by both consumers and governments rather than a dire shortage of supply, has so far sparked riots in Africa and Haiti, but not Asia.

Having started with India's imposition of export curbs to protect domestic supplies last year, the crisis was felt in the United States this week, with major retailers saying they had started to notice signs of panic buying.

Sam's Club, a unit of retail giant Wal-Mart, said on Wednesday it was capping sales of 20-pound (9 kg) bulk bags of rice at four bags per customer per visit to prevent hoarding.

The previous day, rival Costco Wholesale Corp said it had seen increased demand for items such as rice and flour as customers, worried about global food shortages, stocked up.