Combining Cultural Practices with Herbicides Reduces Wild Oat ( Avena fatua) Seed in the Soil Seed Bank and Improves Barley Yield
A study was initiated in 2001at four locations in western Canada to investigate an integrated approach to managing wild oat, the region's worst weed. The study examined the effects of combining semidwarf or tall barley cultivars with normal or twice-normal barley seeding rates in either continu...
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Online Access: | http://dx.doi.org/10.1614/ws-d-12-00168.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0043174500013114 |
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crcambridgeupr:10.1614/ws-d-12-00168.1 2024-09-09T19:40:39+00:00 Combining Cultural Practices with Herbicides Reduces Wild Oat ( Avena fatua) Seed in the Soil Seed Bank and Improves Barley Yield O'Donovan, John T. Harker, K. Neil Turkington, T. Kelly Clayton, George W. 2013 http://dx.doi.org/10.1614/ws-d-12-00168.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0043174500013114 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Weed Science volume 61, issue 2, page 328-333 ISSN 0043-1745 1550-2759 journal-article 2013 crcambridgeupr https://doi.org/10.1614/ws-d-12-00168.1 2024-07-10T04:03:43Z A study was initiated in 2001at four locations in western Canada to investigate an integrated approach to managing wild oat, the region's worst weed. The study examined the effects of combining semidwarf or tall barley cultivars with normal or twice-normal barley seeding rates in either continuous barley or a barley–canola–barley–field pea–barley rotation. Herbicides were applied at 25, 50, and 100% of recommended rates. The first phase of the study was completed in 2005. This paper reports on the second phase, which was continued for four more years at two of the locations, Beaverlodge and Fort Vermilion, AB, Canada. The objective was to determine the long-term impact of the treatments on wild oat seed in the soil seed bank. In 2009 (final year), the diverse rotation combined with the higher barley seeding rate (optimal cultural practice) resulted in higher barley yields and reduced wild oat biomass compared to continuous barley and lower barley seeding rate (suboptimal cultural practice). In contrast to the first phase, barley yield was higher with the semidwarf cultivar, and cultivar had no effect on wild oat management. Wild oat seed in the soil seed bank decreased with increasing herbicide rate, but amounts were often lower with the optimal cultural practice. For example, at the recommended herbicide rate at Beaverlodge, an approximate 40-fold reduction in wild oat seed occurred with the optimal compared to the suboptimal cultural practice. The results indicate that combining optimal cultural practices with herbicides will reduce the amount of wild oat seed in the soil seed bank, and result in higher barley yields. Optimal cultural practices may also compensate for reduced herbicidal effects in terms of reducing wild oat seed accumulation in the soil seed bank and increasing barley yield. The results have implications for mitigating the evolution of herbicide resistance in wild oat. Article in Journal/Newspaper Fort Vermilion Cambridge University Press Canada Fort Vermilion ENVELOPE(-116.007,-116.007,58.392,58.392) Weed Science 61 2 328 333 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
A study was initiated in 2001at four locations in western Canada to investigate an integrated approach to managing wild oat, the region's worst weed. The study examined the effects of combining semidwarf or tall barley cultivars with normal or twice-normal barley seeding rates in either continuous barley or a barley–canola–barley–field pea–barley rotation. Herbicides were applied at 25, 50, and 100% of recommended rates. The first phase of the study was completed in 2005. This paper reports on the second phase, which was continued for four more years at two of the locations, Beaverlodge and Fort Vermilion, AB, Canada. The objective was to determine the long-term impact of the treatments on wild oat seed in the soil seed bank. In 2009 (final year), the diverse rotation combined with the higher barley seeding rate (optimal cultural practice) resulted in higher barley yields and reduced wild oat biomass compared to continuous barley and lower barley seeding rate (suboptimal cultural practice). In contrast to the first phase, barley yield was higher with the semidwarf cultivar, and cultivar had no effect on wild oat management. Wild oat seed in the soil seed bank decreased with increasing herbicide rate, but amounts were often lower with the optimal cultural practice. For example, at the recommended herbicide rate at Beaverlodge, an approximate 40-fold reduction in wild oat seed occurred with the optimal compared to the suboptimal cultural practice. The results indicate that combining optimal cultural practices with herbicides will reduce the amount of wild oat seed in the soil seed bank, and result in higher barley yields. Optimal cultural practices may also compensate for reduced herbicidal effects in terms of reducing wild oat seed accumulation in the soil seed bank and increasing barley yield. The results have implications for mitigating the evolution of herbicide resistance in wild oat. |
format |
Article in Journal/Newspaper |
author |
O'Donovan, John T. Harker, K. Neil Turkington, T. Kelly Clayton, George W. |
spellingShingle |
O'Donovan, John T. Harker, K. Neil Turkington, T. Kelly Clayton, George W. Combining Cultural Practices with Herbicides Reduces Wild Oat ( Avena fatua) Seed in the Soil Seed Bank and Improves Barley Yield |
author_facet |
O'Donovan, John T. Harker, K. Neil Turkington, T. Kelly Clayton, George W. |
author_sort |
O'Donovan, John T. |
title |
Combining Cultural Practices with Herbicides Reduces Wild Oat ( Avena fatua) Seed in the Soil Seed Bank and Improves Barley Yield |
title_short |
Combining Cultural Practices with Herbicides Reduces Wild Oat ( Avena fatua) Seed in the Soil Seed Bank and Improves Barley Yield |
title_full |
Combining Cultural Practices with Herbicides Reduces Wild Oat ( Avena fatua) Seed in the Soil Seed Bank and Improves Barley Yield |
title_fullStr |
Combining Cultural Practices with Herbicides Reduces Wild Oat ( Avena fatua) Seed in the Soil Seed Bank and Improves Barley Yield |
title_full_unstemmed |
Combining Cultural Practices with Herbicides Reduces Wild Oat ( Avena fatua) Seed in the Soil Seed Bank and Improves Barley Yield |
title_sort |
combining cultural practices with herbicides reduces wild oat ( avena fatua) seed in the soil seed bank and improves barley yield |
publisher |
Cambridge University Press (CUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1614/ws-d-12-00168.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0043174500013114 |
long_lat |
ENVELOPE(-116.007,-116.007,58.392,58.392) |
geographic |
Canada Fort Vermilion |
geographic_facet |
Canada Fort Vermilion |
genre |
Fort Vermilion |
genre_facet |
Fort Vermilion |
op_source |
Weed Science volume 61, issue 2, page 328-333 ISSN 0043-1745 1550-2759 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1614/ws-d-12-00168.1 |
container_title |
Weed Science |
container_volume |
61 |
container_issue |
2 |
container_start_page |
328 |
op_container_end_page |
333 |
_version_ |
1809910047369592832 |