%0 Journal Article %A Gyles Randall %A Jeffrey Vetsch %T Optimum placement of phosphorus for corn/soybean rotations in a strip-tillage system %D 2008 %R 10.2489/jswc.63.5.152A %J Journal of Soil and Water Conservation %P 152A-153A %V 63 %N 5 %U https://www.jswconline.org/content/jswc/63/5/152A.full.pdf