Smith, who has one catch for 3 yards and six rushes for 80 yards this season, didn't earn a touch on offense last week against LSU after his practice time with the group was cut short during the preceding week.
"With some injuries at corner, he's been playing more corner here lately, so practice time with Branden has gone down a little bit," Bobo said. "Yeah, it's easy to draw up a play and say we're going to do this play, but if you don't have guys to practice it, it's a little more difficult."
"You have Aaron Murray out and your backup in the game running some plays, if you get him hurt, that puts you in a situation where you really don't have a back-up quarterback," Bobo said. "So that changes your thought process a little bit of what you're going to do offensively with Logan Gray."
Despite the apparent limitations on two of Georgia's change-of-pace weapons, Bobo said both Gray and Smith will continue to have a role in the playbook.
"There'll always be a few plays with (Smith) in the game plan and with Logan," Bobo said. "But it just depends on what we feel gives us the best chance."
MORE INJURY NEWS
Linebackers Marcus Dowtin and Akeem Dent will miss this week's game as well. Dent is still recovering from a lingering hamstring injury that has kept him out of the past two games, and Dowtin underwent surgery on a torn ligament in his left ring finger on Sunday.
Senior Marcus Washington and sophomore Nick Williams will likely handle the majority of the reps Dent and Dowtin would have played, but Richt said there was a chance some of the younger linebackers such as Christian Robinson, Akeem Hebron and Charles White could see action, too.
"We've been repping them all along and giving them as much work as we can, and more than likely they'll get more opportunity in the game than they have," Richt said.