What happened
The pilot had previously returned to the grass airstrip to repair a plugged spray nozzle. After completing the repair, the pilot departed from the northeast runway, choosing this direction to avoid a construction crane located at the southwest end of the runway. During the takeoff roll, the pilot estimated a tailwind of approximately 3-4 knots.
Upon liftoff, the aircraft failed to attain sufficient airspeed to clear an adjacent row of trees. As the aircraft transitioned out of ground effect, a stall occurred. The pilot reported that in response to the stall, power was reduced, leading the aircraft to impact a grain field. The aircraft sustained substantial damage during the event.
Findings
The pilot identified two potential contributing factors to the stall: the presence of a downdraft or the possibility of a spark plug fouling while the engine was idling during the nozzle repair.