Argentine farmers continued their protest on Friday against higher export taxes on soybeans and other grains, after negotiations with the government failed.

The protest started in March and the striking farmers are determined to stay put until their demands are met.

Javier Talomone is one of them.

"We are going to keep the grains as a form of protest, so they can't be exported. The purpose is to see if there is any improvement, or a negotiation in which we can form a business plan for the future that is profitable."

During the earlier work stoppage, farmers erected spiked barricades along highways, blocking trucks, strangling shipments of beef and causing shortages in Argentine cities nationwide.

The farmers' protest has been the country's worst in history, a big challenge under President Cristina Fernandez's five-month administration so far.

President Fernandez said the new taxes will help distribute among poorer Argentines gains that soaring commodity prices are bringing farmers.

But farmers insist the taxes are too high and leaving them slim profits.