All-America Herschel Walker scored three touchdowns and rushed for 149 yards to break the Southeastern Conference career rushing record as fifth-ranked Georgia defeated Mississippi, 33-10, yesterday in Athens, Ga.

Walker, a 220-pound junior, has rushed for 4,158 yards, breaking the record of 4,035 set by Louisiana State's Charles Alexander in four seasons beginning in 1975. Walker set the record in his 27th game and Alexander in his 44th.

"I've got to play on great teams for three years," Walker said. "I didn't even know I was that close to the record until last week. The line just blew them away."

Walker's touchdowns came on runs of three, one and nine yards. The last two came in the second half after the Bulldogs (5-0, 2-0), had broken a 10-10 tie on the final play of the first half when sophomore Kevin Butler kicked a 59-yard field goal. That kick tied the SEC record set in 1969 against the Bulldogs by Cloyce Hinton of Mississippi.

Butler also kicked a 47-yarder in the first period. Georgia's other score came in the third quarter on John Lastinger's four-yard pass to Norris Brown.

The victory was Georgia's 14th in a row in the SEC.

Mississippi (2-3, 0-2) outgained Georgia, 524 yards to 409, but turned over the ball eight times, seven by interceptions. It scored in the second period on Todd Gatlin's 27-yard field goal and a nine-yard pass from Kent Austin to Michael Harmon.

With the seven interceptions, Georgia leads the nation with 22 for the season. Terry Hoage intercepted two passes to give him seven for the season; Ronnie Harris and Jeff Sanchez also had two interceptions each.

Georgia Coach Vince Dooley said he was pleased his team "did wake up for the second half" after holding a 13-10 lead at halftime.

"We don't have a great team and we have to play at our peak every week to win," Dooley said.

Said Mississippi Coach Steve Sloan: "I think the story of the game was simply a matter of Georgia playing error-free ball and us making a multitude of mistakes. We kept finding ways to beat ourselves and you just can't do that against a team as good as Georgia."