Three tugs are working round the clock to try and free the bulk carrier but meantime tens of vessels are waiting in the blocked river, local media reported.
"The navigation channel remains closed by the Coast Guard since April 2 at midday because the vessel Samjohn Liberty grounded in kilometre 280 of the Parana River", said a statement from the Rosario Chamber of Port and maritime activities (CAPM).
According to ship chandlers tens of vessels waiting to load grains and oil seeds are delayed because a vessel contracted by Dreyfus with the purpose of shipping 48,000 tons of soybeans to Poland remains grounded.
"Since Tues the ship is being helped by two tugs and a third, more powerful, joined on Wed. Traffic both ways along the river remains blocked", said Guillermo Wade, manager of CAPM The accident could not have come at a worst moment since Argentine farmers are harvesting soybeans and corn, intensifying port activities in Rosario which has become Argentina's main export port for soy oil, soy flour and second for corn.
The south of Brazil where the Parana basin is located suffered an extreme drought in the early months of the year, which according to Wade could be the main reason behind the lower level of the river that has caused several groundings.
In early Jan a similar situation with another grain bulk carrier caused a several days delay involving over one hundred vessels.