Nitrogen and Seed Treatment Trials
Weather affected field research in many ways in 2000′; the two nitrogen management trials. Northeast Iowa farmers John and Joan Lubke, Ridgeway, are part of PFI’s collaboration with the Iowa Farm Bureau. They expected a yield response to the 66 lbs N sidedressing they applied to corn. After all, the 9 ppm (parts per million) nitrate-N that they got from the late spring soil nitrate test suggested the crop was definitely in need of additional nitrogen. But the weather stepped in, in the form of a hail storm. the damaged crop could not make full use of additional nutrients, and yields barely broke 100 bushels.