1. High Soil Test Phosphorus Effect on Corn Yield. Issue 5 (13th September 2018) Authors: Wortmann, Charles; Shapiro, Charles; Shaver, Tim; Mainz, Michael Journal: Soil Science Society of America Journal Issue: Volume 82:Issue 5(2018) Page Start: 1160 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Improved Yield and Nitrogen Use Efficiency of Corn following Soybean in Irrigated Sandy Loams. Issue 6 (30th October 2015) Authors: Attia, Ahmed; Shapiro, Charles; Kranz, William; Mamo, Mitiku; Mainz, Michael Journal: Soil Science Society of America Journal Issue: Volume 79:Issue 6(2015) Page Start: 1693 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Use of Five Nitrogen Source and Placement Systems for Improved Nitrogen Management of Irrigated Corn. Issue 6 (3rd November 2016) Authors: Shapiro, Charles; Attia, Ahmed; Ulloa, Santiago; Mainz, Michael Journal: Soil Science Society of America Journal Issue: Volume 80:Issue 6(2016) Page Start: 1663 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗