During takeoff, when the airplane reached the rotation speed, the pilot applied back pressure to the flight controls. When the airplane reached an altitude about 50 feet above the ground, the stall warning horn sounded, which is indicative of the airplane nearing the critical angle of attack. The pilot attempted to maintain airspeed and then executed a forced landing to a field straight ahead. The airplane touched down in the field, continued through a small wire fence, struck an embankment, and came to rest near a highway. The airplane received substantial damage to the wings and fuselage. The pilot reported a total of 6.1 hours in the airplane make/model and 71.4 hours in all aircraft. The pilot reported that there were no mechanical malfunctions or failures of the engine or airframe that would have precluded normal operation