Argentine farmers have said they would continue the crippling 19-day strike after rejecting a series of new government measures as insufficient.

President Cristina Fernandez announced rebates on new export taxes for small and medium-sized farms. But she refused to rescind a controversial tax rise.

She asked farmers to lift roadblocks that have caused shortages of products and blocked key exports.

"I am asking to all those who feel that their rights have been broken and who have the full right to stand for it and protest, that they may do it on the sides of the roads, that they let the trucks carrying food and goods for the people to pass, and also the goods for the factories to work."

Fernandez told farmers she had no plans to roll back a new sliding scale of tax hikes on some farm exports. But she offered transport subsidies for distant farms and some new credit plans for dairy farmers, among other offers.

Farmers were not satisfied with the new measures and urged the government to make bigger concessions.

The walkout has emptied supermarket shelves of beef in this beef-loving nation. It also blocked key exports of soybeans, beef and wheat.

Small farmers complain that they have been unfairly hit by a presidential decree that hiked export taxes on soybeans by up to 45 percent, and slapped new duties on other farm exports.

Fernandez says the measure is intended to help stem rising inflation, which officially topped 9 percent last year.