Hundreds of French farmers and more than 1,300 tractors have converged on central Paris in the latest protest against collapsing incomes, reports the BBC.
The protesters blocked major arteries into the capital, but officials say they caused little disruption.
Livestock and dairy farmers in particular have been badly hit by falling prices on world markets.
They have been hit by tough competition between supermarkets as well as a Russian embargo on EU food imports.
The BBC's Hugh Schofield in Paris says that it was a noisy, eye-catching, disruptive protest from the farmers in the centre of the capital.
The protesters want to put maximum possible pressure on President François Hollande's socialist government, which has already given way once, just six weeks ago, with a package of debt relief worth €600m ($674m; £440m), our correspondent says.
But the farmers say that they need much more, arguing that French agriculture is on the verge of collapse.
Their tractors, spray-painted with "Anger'" or "Enough Bureaucracy", trundled on Thursday morning along major roads in the capital.