A poorly planned marketing campaign led to Tara’s ouster on last night’s episode of “The Apprentice.”

Tara, the 28-year-old Port Authority PR manager who was leading the Net Worth (“Street Smarts”) team, was “fired” by series host Donald Trump in a raucous boardroom sequence.

Tara got the boot because, in Trump’s words, she made “really bad miscalculations. This was a marketing campaign and you just didn’t get it.”

The “marketing campaign” in question had both teams, Net Worth and Magna (“Book Smarts”), creating a mural in Harlem to publicize Sony’s new PlayStation game, Gran Turismo 4.

After meeting with Sony execs, each team had to choose a graffiti artist to create the mural on a 20-foot wall – with Trump and his sidekicks then bringing in Harlem residents to judge the murals on their marketing value.

Net Worth’s losing mural depicted, in Tara’s words, “the mean streets of New York,” words she lived to regret when she took all the credit for the mural – and then listened as Harlem residents dissed it, big time.

“No matter what you say and what you do . . . you didn’t get the marketing task right,” said Trump before booting Tara.

Magna’s winning mural had a “tricked-out” car in front of the New York skyline.