Updated

Hundreds of disgruntled Thai farmers have breached razor-wire barricades outside the prime minister's temporary office in a protest over delayed payments from the controversial rice pledging scheme.

The farmers from nearly 20 provinces on Monday trampled razor wires and shoved soldiers guarding the compound of Yingluck Shinawatra's temporary office in Bangkok.

They demanded Yingluck meet them in person to answer when and if they will be paid.

The policy of buying rice from growers at above market prices has accumulated losses of at least $4.46 billion and has been dogged by corruption allegations.

It is one of the latest headaches for Yingluck, who has been forced to work at the temporary location since late last year after anti-government protesters surrounded her office in central Bangkok demanding her resignation.