Former fast bowler Merv Hughes feels CA's caution against on-field sledging will only put Australia under more pressure.

To avoid any unwanted controversy when Australia will cross swords with England in their bid to retain the Ashes, starting in Cardiff on July 8, Cricket Australia had advised its players to refrain from on-field sledging.

"It's easy to say in the coolness of a boardroom but when players are out there trying to win a Test match for Australia and the adrenalin is going, they're not thinking about being a role model," Hughes said.

Hughes does not see anything wrong in sledging within limits as, he feels, it only adds to the cricketers' mental toughness.

"I think it's right Cricket Australia protects the image of their cricket team but there's nothing wrong with (players) being tough, uncompromising and aggressive," Hughes was quoted as saying by 'Sydney Morning Herald'.

Ricky Ponting's men also had been told by their board in the strongest terms not to spit or swear on the pitch at any time nor claim catches that may have hit the ground before reaching the fielder.