Wild barley (Hordeum spontaneum C. Koch) seedbank characterization and its management in wheat fields under different tillage systems

Document Type : Research Paper

Authors

1 Ph. D. Candidate of Weed Science, Department of Crop Science, Faculty of Agriculture, University of Bu-Ali Sina, Hamedan, Iran

2 Associate Prorfessor, Department of Crop Science, Faculty of Agriculture, University of Bu-Ali Sina, Hamedan, Iran

Abstract

A field study was carried out in Fars agricultural research center to investigate effects of different tillage systems and chemical control on soil seedbank density and management of wild barley in wheat fields followed by corn. A split-plot trial based on randomized complete block design with six replications was conducted during two following years (2012-2014). Main plots included conventional tillage (CT), minimum tillage (MT) and no-tillage (NT). Each main plot was split into two subplots as weed-infested and herbicide application. Total (Sulfosulfuron 75% + metsulfuron methyl 5%) at 40 g/ha was applied in wheat field at the stage 32 of Zadoks decimal code. Results indicated that soil seedbank density of wild barley was significantly increased in CT, MT and NT respectively during two years. Moaldboard plough influenced vertical distribution and longevity of seeds in soil. Increasing soil seedbank lead to enhance seedling, spike number and dry weight of wild barley. Wheat yield in CT decreased significantly in comparison to MT due to high density of weed seedbank. Overall, MT system with herbicide got long- term wild barley management. This treatment reduced soil seedbank and increased wheat yield significantly in comparison to CT and MT.

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Main Subjects

References

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Iranian Journal of Field Crop Science
Volume 48, Issue 2 - Serial Number 2
September 2017
Pages 421-429

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History

  • Receive Date: 18 April 2016
  • Revise Date: 08 June 2016
  • Accept Date: 05 July 2016
  • Publish Date: 23 August 2017

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