On July 8, 1993, at 1830 central daylight time, a Cessna A188B, N4739R, was substantially damage near Temple, Texas, during aerial application maneuvering. The commercial pilot did not sustain injury. Visual meteorological conditions prevailed throughout the area for the aerial application flight. During telephone interviews, conducted by the investigator in charge, the operator and the pilot stated that the airplane was loaded with 48 gallons of fuel and 80 gallons of chemical. They further stated that the temperature for the day was at least 95 degrees Fahrenheit and during a low turn-around in high humidity and high density altitude conditions the airplane did not maintain altitude. They reported the winds were from the southwest at 20 knots gusting to 30 knots and the turn-around was attempted with a quartering tailwind. The pilot stated that the left wing hit a tree and the airplane descended into the corn field. The operator reported (enclosed statement) that the turn- around maneuver was not made high enough. Numerous attempts were made by the investigator in charge to obtain the Pilot/Operator Report (NTSB Form 6120.1/2). This report has not been received.