ISSN: 2329-8863

Advances in Crop Science and Technology
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  • Research Article   
  • Adv Crop Sci Tech 2015, Vol 3(3): 178
  • DOI: 10.4172/2329-8863.1000178

Long-Term Tillage and Crop Rotation Impacts on a Northern Great Plainsmollisol

Ibrahim MA, Alhameid AH, Kumar S*, Chintala R, Sexton P, Malo DD and Schumacher TE
Department of Plant Science, South Dakota State University, Brookings, South Dakota (SD), USA
*Corresponding Author : Kumar S, Department of Plant Science, South Dakota State University, Brookings, South Dakota (SD), USA, Tel: +39-0332-789-7, Email: sandeep.kumar@sdstate.edu

Received Date: May 24, 2015 / Accepted Date: Jul 25, 2015 / Published Date: Aug 01, 2015

Abstract

Soil properties can be altered by tillage and rotation, however, these effects cannot be detected in short-term studies. This study was conducted to assess the long-term (14 years) tillage and rotation impacts on selected soil surface properties. A long-term experimental site comprised of two tillage systems [no tillage (NT) and conventional tillage (CT)], and three crop rotations [corn (Zeamays)-soybean (Glycinemax), corn-soybean-wheat (Triticumaestivum), and corn-soybean-wheat-alfalfa (Medicagosativa)] were used for the present analysis. Surface (0-15 cm) soil samples were collected every year from 1991 through 2004 and analyzed for soil organic matter (SOM), available P, available K, and nitrate (NO3ˉ-N). Results indicated that SOM concentration (averaged across all years) under NT (37 g kg-1) was significantly higher compared to that of CT (36 g kg-1). However, overall crop rotation did not impact SOM. Soil P concentration under NT (208 mg kg-1) was significantly higher (8.3%) than that of CT (191 mg kg-1). Available P concentration was the highest in the 2-year-rotation, intermediate in the 3-year-rotation, and lowest in the 4-year-rotation. Tillage system did not significantly impact NO3 - concentration; nonetheless, its concentration was the highest in the 4-year-rotation followed by the 3-year-rotation, and the lowest was in the 2-year-rotation. The available K concentration under NT was not significantly different from that under CT; however, its concentration under the 2-year-rotation (340 mg kg-1) was significantly lower than those under the other two rotations. This 14-year tillage and rotation study had minimal impact on surface soil properties at this location.

Keywords: No-tillage; Conventional tillage; Soil nutrients; Soil organic matter

Citation: Ibrahim MA, Alhameid AH, Kumar S, Chintala R, Sexton P, et al. (2015) Long-Term Tillage and Crop Rotation Impacts on a Northern Great Plainsmollisol. Adv Crop Sci Tech 3:178. Doi: 10.4172/2329-8863.1000178

Copyright: © 2015 Ibrahim MA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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