At approximately 11:00 MDT, a Piper Pawnee crashed after an aborted landing at Salida. The pilot was seriously injured. A glider was towed aloft from runway 6 and the Pawnee took off shortly thereafter. Both aircraft remained in the traffic pattern. Local airport procedures call for gliders to depart runway 6 and land on runway 24. The Pawnee landed on runway 6 and, during the rollout, its pilot saw the approaching glider. He applied full power and veered to the right, but the airplane struck terrain. The glider landed uneventfully.