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Presentation
Comparing Stacked and Alternate-Year Cropping Systems In a Semiarid Environment
Agronomy Conference Proceedings and Presentations
  • Andrew W. Lenssen, Iowa State University
  • Upendra M. Sainju, United States Department of Agriculture
  • Brett L. Allen, United States Department of Agriculture
  • TheCan Caesar-TonThat, United States Department of Agriculture
  • Robert G. Evans, United States Department of Agriculture
Document Type
Poster
Publication Date
1-1-2013
Conference Title
ASA-CSSA-SSSA International Annual Meeting
Conference Date
November 3-6, 2013
Abstract
Diversification of continuous durum system can improve economic and environmental sustainability in semiarid cropping systems, but little is known about the influence of rotation type and management system on durum performance. We conducted a study from 2005 to 2011 comparing two sets of crops in stacked (durum-durum-canola-pea and durum-durum-flax-pea) and alternate-year (durum-canola-durum-pea and durum-flax-durum-pea) rotations under conventional and ecological management levels on durum yield and characteristics. Continuous durum was included as a control. Conventional management included preplant tillage, broadcast urea, standard seeding rates, and short durum residue height. Ecological management included zero tillage, banded urea at planting, greater seeding rates, and tall durum residue height. Average durum grain yield, plant height, and plant stand across years were lower in durum-durum-canola-pea than other rotations under the conventional but not under the ecological management. Overall, rotation type rarely influenced yield or yield components of durum. Durum yield was greater in three out of six years under the ecological than under the conventional management. Durum was taller, with more reproductive tillers but fewer seed per head, under the ecological than under the conventional management. Stacked rotation of durum with pea in the conventional management resulted in reduced durum grain yield and performance compared to other treatments in dryland cropping systems in the northern Great Plains.
Comments

This poster was presented at the ASA-CSSA-SSSA International Annual Meeting, Tampa, FL, November 3-6, 2013. Posted with permission.

Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted
Language
en
File Format
application/pdf
Citation Information
Andrew W. Lenssen, Upendra M. Sainju, Brett L. Allen, TheCan Caesar-TonThat, et al.. "Comparing Stacked and Alternate-Year Cropping Systems In a Semiarid Environment" Tampa, FL, United States(2013)
Available at: http://works.bepress.com/andrew_lenssen/107/