Umesh Acharya, Walster Hall, North Dakota State University, Fargo, ND, Aaron Daigh, Soil Science, North Dakota State University, Fargo, ND and Amitava Chatterjee, North Dakota State University, North Dakota State University, Fargo, ND
Subsurface tile drainage is a common practice under poorly drained high clay content soil to remove excess water. The objectives of this on-farm project were to evaluate the impact of subsurface tile drainage on continuous corn (CC) and corn soybean (CS) with three tillage practice; chisel (CH), strip till (ST), no till (NT). This research has been conducted at Casselton, ND and tiles were installed in June 2013. Tile had no significant impact on corn yield. Corn yield was significantly greater with CS than CC during 2015-16. Chisel had slightly higher corn yield than no-till and strip-till but yield difference was decreasing over three years. Soybean yield significantly increased with tile and chisel combinations. Tile drainage might help in adopting conservation tillage without compromising yield.