According to the student pilot, he went to a friend's farm field for a pleasure flight in his powered parachute. He took off about 1610 for a solo flight in the local area with no problems. Upon landing, a friend indicated that he would like to go for a flight. The student pilot did not see a problem with this and proceeded to take off with the passenger. The student pilot said that "unfortunately, I made an error in judgment, in reference to the length and preparation of the field and did not clear the trees at the end of the field." The aircraft crashed into the trees at the end of the runway. The student pilot further stated that "this accident could have been prevented had I not made a judgment error as to the length, condition [and] type of field used for takeoff. The field was not of sufficient length to get airborne [and] was a non improved farm field with obstacles at the departure end." Additionally, he stated that "density altitude was a concern since the temperature was 90 plus degrees with 65 or higher humidity which created a major lift problem for the machine."