Bismarck du Plessis.

South African Rugby Union president Oregan Hoskins doubted the fairness of the Sanzar judiciary after Bismarck du Plessis was banned for three weeks.

Du Plessis was suspended for "careless, not deliberate, contact with the eye area" of New Zealand flanker Adam Thomson after the Springboks' 30-28 victory in Dunedin on Saturday.

Hoskins told Supersport from Perth on Monday he was shocked by the length of du Plessis' suspension, especially a week after All Blacks lock Brad Thorn received a one-week ban for a dangerous tackle that put Boks captain John Smit out of the rest of the Tri-Nations.

Hoskins said he will be expressing his concerns about the judicial system with his Sanzar partners New Zealand and Australia at a meeting this week in Perth, coinciding with South Africa's test against the Wallabies on Saturday.

"It would be remiss of me to remain silent because I believe the sentence (on du Plessis) was extremely harsh. I was quite shocked by the outcome of the hearing and I'm concerned about the whole system and its consistency. I will table those concerns with Sanzar this week," Hoskins said.

The Springboks did not appeal the ruling against du Plessis by Australian judicial officer Kim Garling.

"We certainly thought about an appeal, but it would have been a logistical nightmare before a very important game," Hoskins said. "It would have kept a player there in New Zealand for a couple more days unsure of whether he would be playing and a coach sitting here unsure of whether to include him in his plans or not.

"I complained at the World Cup last year about the treatment of Schalk Burger (who was cited and banned for four matches for a high tackle, reduced to two on appeal) and Tim Gresson, the head of the IRB judicial committee, conceded later that I was correct.

"But I don't want to hear that I'm correct, I want to see the system being corrected." Hoskins was also critical of TV producers who he believed were selectively choosing which replays to broadcast and therefore bringing incidents to the attention of the citing commissioner.

"I'm certainly in favor of a clean game and I believe we should be given as much information as possible on foul play. But we must not have selective information," said Hoskins, who has served on disciplinary committees.

"Showing slow-motion replays on a selective basis is tantamount to bias and prejudice, and I will be raising that matter too with South Africa's two Sanzar judicial commissioners, Janne Lubbe and Lex Mpati." Hoskins said he believed du Plessis was not guilty.

"I've watched that replay for hours on super slow-mo. The fact that it was not deliberate, coupled with the fact that it did not cause any injury, means he should have been given the benefit of the doubt and found not guilty," Hoskins said.

"There is a third factor to take into account and that is it was Thomson's own teammate, Jerome Kaino, who played a role in the incident. Kaino hooked Bismarck's arm and dragged it across Thomson's face before pushing him over." Hoskins said there was a strong contradiction between the treatment meted out to Thorn and du Plessis.

"Just last week, our captain felt he had been spear-tackled and because of that he's out of the whole Tri-Nations. But the guilty party was only suspended for one match.

"There's a lot of inconsistency creeping in and it's not good for the game. It's totally unacceptable for us to put up with this."