What is most puzzling about farmer Jim Stahl's crop circles are the red streaks that can be seen on the soybeans, the Moline (Ill.) Dispatch reported.
Lisa Kull, a plant pathologist from the University of Illinois who viewed pictures of the field online, says she has never seen a plant disease lay out plants like that.
The red streaks are also a first for phenomena investigation expert and retired neurochemist JoAnne Scarpellini.
"We've never seen those red streaks on soybeans before," Scarpellini told the Dispatch. "This has never been reported anywhere in the world."
Scarpellini took plant and soil samples for Massachusetts-based BLT Research Inc. and said she would return for further tests.
Notable deaths of 2014 [PHOTOS]