Argentine farmers have blocked roads and called a seven-day strike in a continuing dispute with the government over soy export taxes.
Protesters stopped traffic along several major highways in the Pampas region on Friday.
The dispute between farmers and the government has lifted global soy prices and local livestock prices. The peso and Argentine bonds have slid.
Members of the ruling party refused on Thursday to vote on an opposition bill to cut the taxes, which were imposed last year.
President Cristina Fernandez also announced on Thursday that revenue from the soy levies would be shared with provincial governments.
Congressional elections are expected to take place in June.