Tillage effect on soybean yield

Tillage effect on soybean yield
(A) Soybean yields and (B) net return averaged over the three years from 2003–2005 in both corn–soybean and corn–corn–soybean rotations at eight ISU outlying research farms. NT = no-till, ST = strip-tillage, DR = deep rip, CP = chisel plow, MP = moldboard plow.
Updated 04/07/2006 - 10:59am