The pilot reported that he made an off-airport precautionary landing due to turbulent conditions; during the landing roll in a pasture, the airplane's nose gear encountered a "line fence" and nosed over.
The airplane sustained substantial damage to the fuselage, and both wings.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
An automated weather observation station located 9 miles north/east of the accident location reported that, about the time of the accident, the wind was from 080° at 8 knots, visibility 10 statute miles, clear of clouds, temperature was 13°C (55°F) and the dew point was 4°C (39°F).