On July 23, 1995, about 1800 eastern daylight time, a Piper PA-25-235, N7601Z, collided with a guy wire, during landing, near Allendale, South Carolina. The airplane was operated by Sky Ag Aviation under 14 CFR Part 91, and visual flight rules. There were no injuries to the commercial pilot, and the airplane was substantially damaged. A flight plan was not filed for the aerial application flight. Origination of the flight was Sycamore, South Carolina, abut 1700, on the same day. The pilot reported that while spraying crops, large thunderstorms and gusty winds forced him to abandon the spraying operation. He had been operating in the local area for about four days and was unfamiliar with the terrain. He lost sight of a companion airplane, as they were proceeding to Allendale for landing. Because of a thunderstorm ahead of him, and gusts from a storm behind him, he elected to land on a dirt, county road. During the landing, one wing was substantially damaged when it contacted a guy wire for an electrical pole. The report of the accident was provided to the FAA on July 27, 1995. The operater stated that the damage was initially reported to him as minor. When he examined the airplane and discovered substantial damage, he provided that information to the Flight Standards District Office.