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Presentation
Impact of a Corn-Living Mulch Cropping System on Soil C- and N-Dynamics
Agronomy Conference Proceedings and Presentations
  • Chumki Banik, Iowa State University
  • Cynthia Bartel, Iowa State University
  • David A. Laird, Iowa State University
  • Kenneth J. Moore, Iowa State University
  • Andrew W. Lenssen, Iowa State University
Document Type
Abstract
Publication Version
Published Version
Publication Date
1-1-2016
Conference Title
ASA-CSSA-SSSA Annual Meeting
Conference Date
November 6–9, 2016
Geolocation
(33.4483771, -112.07403729999999)
Abstract
Use of a living mulch in a continuous corn cropping system can potentially protect the soil from erosion and increase organic C inputs into the soil thereby enhancing soil quality and facilitating greater harvest corn stover for bio-energy production. The objective of this study is to evaluate soil C- and N-dynamics under a corn-living mulch system that includes a shallow rooted perennial cover crop, strip tillage, and spring burn down. This study hypothesized that a well managed shallow rooted perennial cover crop can improve soil quality by increasing soil C storage and synergistically distributing soil nutrients. Here we report impacts of the living mulch systems on season Mehlich III extractable nutrients and the inter-season timing and distribution of water extractable C and 2M KCl extractable NO3 and NH4 for 3 site-years. Two living mulch systems were used, Kentucky bluegrass (Poa pratensis L.) and Tall fescue [Schedonorus arundinaceus (Schreb.) Dumort.], and soil samples were collected from within rows (strip till zone where corn is planted with no cover crop) and in between corn rows (under the perennial cover crop) thrice a month after N-fertilizer application. The nutrient data and their implications on corn yield will be reported to evaluate impacts of living mulches on continuous corn systems.
Comments

This is an abstract of a presentation from the ASA-CSSA-SSSA Annual Meeting, Phoenix, AZ, November 6–9, 2016. Posted with permission.

Copyright Owner
The authors
Language
en
File Format
application/pdf
Citation Information
Chumki Banik, Cynthia Bartel, David A. Laird, Kenneth J. Moore, et al.. "Impact of a Corn-Living Mulch Cropping System on Soil C- and N-Dynamics" Phoenix, AZ, United States(2016)
Available at: http://works.bepress.com/andrew_lenssen/98/