N3299XAyres S2R-G6

The pilot reported that he was taking off from his private airstrip with a left quartering tailwind for an aerial application flight. Due to payload and wind conditions, flying airspeed was not attained prior to his anticipated liftoff point. The nose of the airplane began to veer to the left, and he attempted to correct the drift. He passed his decision point and attempted to avoid a ditch in his path. The airplane impacted the northern bank of the ditch, shearing off the landing gear and damaging the propeller and spray system. After the airplane came to rest, the pilot egressed and a postaccident fire destroyed the wreckage. The pilot reported no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.