Organic Matter and Nitrogen in an Ultisol as Affected by Cropping and Tillage System after Seven Years

نویسندگان

  • Ruben A. Ortiz
  • R. N. Gallaher
چکیده

The experiments were conducted at Green Acres Agronomy farm near Gainesville, Florida, on an Arredondo loamy sand, a member of the loamy, silicious, hyperthermic family of grossarenic Paleudults. The field study started in 1976 included cropping systems of oat (Avena sativa)/soybean (Glycine max L. Merr.) versus oat/grain sorghum (Sorghum bicolor L.) that were split plots of four tillage treatments: No-tillage subsoil, no-tillage, conventional tillage subsoil, and conventional tillage. Tillage treatments were whole plots in a randomized complete block with four replications.

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تاریخ انتشار 2002