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Published August 20, 2013, 12:00 AM


Dakota Lakes Research Farm at Pierre, S.D., is partly focused on improving soil-building production practices for soybeans, corn and rotation crops, under irrigation. Photo taken July 18, 2013, east of Pierre, S.D. (Forum News Service/Agweek/Mikkel Pates)(EMBARGO TO AUG 27, 2013)