A paraglider pilot making a low pass made ground contact when the right flex wing partially collapsed. Wake turbulence from a preceding paraglider may have contributed.

Narrative

While flying a Destiny paraglider in low wind conditions; I was making a low/level off approach to practice maintaining altitude approximately 5-10 feet above the ground. Approximately 2/3 of the way down the grassy area (2000ft); I believe I encountered some wake turbulence from another paraglider that was approximately 30-60 seconds in front of me. The parachute partially collapsed on one side which set in motion a pendulum effect. The machine swayed side to side as well as forward. I initially added full power to recover. Upon touching down at an angle; I did not believe the machine would continue to fly; so I reduced power to idle. The machine touched down at an angle and came to rest without flipping.The biggest perception with regard to human factors that I take away from this is that I did not have in my mind to touch down. I was going to fly down the grass strip and then go around at the end. In the future I will plan every approach as if I will touch down and plan accordingly. The second is to recognize the effect of 'bad' air on a soft wing at low altitudes. In addition; this could include buildings; structures; trees etc.