Thursday, June 12, 2003
For the past two weeks, purple corn has been observed in several fields throughout southern and western Minnesota. Although corn that is deficient in phosphorus has a purple color, it is doubtful that phosphorus deficiency is responsible for the observations this spring and early summer.
The purple coloring this year, as was the case in 1997, is probably caused by a situation called the "fallow syndrome." This situation usually occurs in areas where a crop was not grown last year or following sugar beets.