They have also set up more than 100 roadblocks around the country, which are paralysing traffic.
The farmers are demanding the government to roll back taxes imposed on exports of wheat and soy, and halt restrictions on the export of beef.
Argentina is currently experiencing its worst drought in decades with more than one million cattle dying of thirst. The wheat harvest has also been devastated with predictions the crop will be more than 50 percent less than normal.
