Influence of tillage, vertical seed distribution, and pyroxasulfone application timing and rate on control of wild oat (Avena fatua L.)
| Autor: | Linda M. Hall, Hugh J. Beckie, Jeff J. Schoenau, Amy R. Mangin |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Biomass (ecology) biology Edaphic 04 agricultural and veterinary sciences Plant Science Horticulture biology.organism_classification 01 natural sciences Tillage 010602 entomology Agronomy 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Avena fatua Weed Agronomy and Crop Science |
| Zdroj: | Canadian Journal of Plant Science. 98:601-608 |
| ISSN: | 1918-1833 0008-4220 |
| DOI: | 10.1139/cjps-2017-0199 |
| Popis: | Tillage and new herbicide options may be necessary for the control of herbicide-resistant wild oat. The efficacy of soil-applied herbicides such as pyroxasulfone can be influenced by edaphic factors and weed seed recruitment depth, which varies with tillage system. We investigated the effect of tillage and pyroxasulfone rate when applied in the fall and spring on wild oat biomass at three locations in Alberta in 2014–2015. The vertical position of wild oat seeds, with and without tillage, was examined at each site. Wild oat biomass was greater in untilled plots compared with plots with fall tillage at all locations. In two out of three locations, pyroxasulfone efficacy was superior when applied in the fall compared with spring, possibly influenced by low spring rainfall. A single tillage pass at the Edmonton and Kinsella locations did not affect wild oat seed distribution, but there was an increase in seeds present in the surface layer in the untilled treatment at Lacombe. Tillage, used in combination with soil-applied herbicides, may be an option to achieve acceptable control of herbicide-resistant wild oat. |
| Databáze: | OpenAIRE |
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