On July 28, 1996, at 1922 central daylight time (cdt), a Cessna 188, N5708G, piloted by a commercially certificated pilot, was substantially damaged during landing when it ground looped and collided with the ground. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 137 aerial application flight was not operating on a flight plan. The pilot reported no injuries. The flight had departed Napoleon, North Dakota, at 1800 cdt. The pilot said he was making a wheel landing with a light, left, crosswind. He said the airplane's left wing raised due to a gust of wind. A second wind gust caused the airplane to begin skipping to the right, according to the pilot. He said he applied full left rudder without any additional left aileron. The pilot said the airplane ground lopped a short time later. The left main landing gear separated from the fuselage. The left wing skin and spar has wrinkles in it, and the left main gear leg is protruding through the right wing from the bottom.