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Corn and Soybean Production as Affected by Tillage Systems

^a Southern Research and Outreach Center, Univ. of Minnesota, 35838 120th St., Waseca, MN 56093-4521
^b Dep. of Soil, Water and Climate, 1991 Upper Buford Cir., Univ. of Minnesota, Saint Paul, MN 55108

View larger version (27K): [in this window] [in a new window]   Fig. 1. In-row penetrometer resistance in April (before preplant tillage), May (corn emergence), and June (about V4) in 2000 as affected by tillage for corn. Error bars at each depth show LSD (0.10). CP+SFC, chisel plow plus spring field cultivate (SFC); ST, strip-tillage; ZT, zone-tillage; NT, no-tillage.

View larger version (26K): [in this window] [in a new window]   Fig. 2. In-row penetrometer resistance in May (corn emergence), from 2000–2002 as affected by tillage for corn. Error bars at each depth show LSD (0.10). CP+SFC, chisel plow plus spring field cultivate (SFC); ST, strip-tillage; ZT, zone-tillage; NT, no-tillage.