Argentina skipper Juan Martin Fernandez Lobbe has admitted that "effort and fight" alone is not enough to win Test matches.

The Pumas headed to Edinburgh today facing a possible autumn whitewash following defeats against England and Wales.

Scotland, buoyant after a first victory over Australia since 1982, will start as firm favourites at Murrayfield next Saturday.

And Lobbe, the one Pumas player to excel in adversity when Wales and Shane Williams cut loose, knows his team must show a significant improvement.

History is on their side - seven wins in the last eight appointments with Scotland - but Argentina's chronically-weak attacking game suggests another long afternoon lies ahead.

"It was a bad game for us against Wales," said the Toulon number eight.

"We made many mistakes - you cannot do that at this level - and Wales took advantage. They spoke about trying to attack us, but the tries we conceded were soft ones.

"We still have a match to play on tour, and we must try to be more concentrated.

"The effort and the fight we have in the team is unquestionable, but it was shown that at this level it is not enough."

Argentina are currently a shadow of the the side that finished third at the 2007 World Cup, sorely missing injured playmakers Juan Martin Hernandez and Felipe Contepomi.

Wales' 33-16 success was their record winning margin for a 12-Test series that began in 1991, and the Pumas could have few complaints.

"We are not satisfied with our performance," added Toulouse lock Patricio Albacete.

"We have a final game now against Scotland in which we have to improve on the mistakes we made and go for a win.

"It will be a tough game, but we must work to go for it. This team does not like losing, so we will reverse the situation."

And the Pumas' Harlequins centre Gonzalo Tiesi said: "At this level, mistakes are expensive. You just cannot do it.

"We are pretty hurt by it, but we still have a week of work ahead of us and a game which we have to go out and win."

Argentina claimed a solitary try in losing to Wales and England, and that score arrived via a charge-down from centre Jonathan Davies' attempted defensive clearance.

But Pumas coach Santiago Phelan is refusing to be downbeat, despite his team's obvious shortcomings.

"I thought some things went well, but others failed, and that was reflected in the outcome," he said.

"If I have to emphasise a positive aspect of the team, it was the intention that we had in the offensive aspect, although at times it was messed up.

"Wales made good use of our mistakes. We did not meet our target of improvement in the game, but I don't think it was a case of going backwards."