Competitive ability of Ethiopian spring bread wheat cultivars with Avena fatua L.
Competitive interactions of four spring bread wheat cultivars ( Triticum aestivum check for this species in other resources L.) with four wild oat ( Avena fatua check for this species in other resources L.) seedling densities were assessed in field studies in southeastern Ethiopia during three cropping seasons (1991-93). Grain yield of wheat was linearly proportional to the seedling density of wild oats, but yield reductions at the maximum density of 90 weed seedlings m-2 ranged from 26 to 63% across the wheat cultivars. The semidwarf cultivar Dashen was the most sensitive to wild oat competition, while the intermediate height cultivar Enkoy was the least affected. Wheat cultivars varied markedly in their ability to suppress A. fatua tillering and seed production, differentially affecting wild oat seed and straw yield, panicle production, seed number panicle-1, and thousand kernel weight. Given the limited access of Ethiopian peasant farmers to grass herbicides, wheat breeders should be encouraged to exploit such variability, and develop germplasm with a greater inherent ability to compete with wild oats.
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Language: | English |
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African Crop Science Society
1995
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Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, Competition, TRITICUM AESTIVUM, WEEDS, WILD PLANTS, |
Online Access: | http://hdl.handle.net/10883/2304 |
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dig-cimmyt-10883-23042021-03-31T14:21:07Z Competitive ability of Ethiopian spring bread wheat cultivars with Avena fatua L. Tanner, D.G. Giref Sahile Workiye Tilahun AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Competition TRITICUM AESTIVUM WEEDS WILD PLANTS Competitive interactions of four spring bread wheat cultivars ( Triticum aestivum check for this species in other resources L.) with four wild oat ( Avena fatua check for this species in other resources L.) seedling densities were assessed in field studies in southeastern Ethiopia during three cropping seasons (1991-93). Grain yield of wheat was linearly proportional to the seedling density of wild oats, but yield reductions at the maximum density of 90 weed seedlings m-2 ranged from 26 to 63% across the wheat cultivars. The semidwarf cultivar Dashen was the most sensitive to wild oat competition, while the intermediate height cultivar Enkoy was the least affected. Wheat cultivars varied markedly in their ability to suppress A. fatua tillering and seed production, differentially affecting wild oat seed and straw yield, panicle production, seed number panicle-1, and thousand kernel weight. Given the limited access of Ethiopian peasant farmers to grass herbicides, wheat breeders should be encouraged to exploit such variability, and develop germplasm with a greater inherent ability to compete with wild oats. 83-91 2013-06-07T21:11:25Z 2013-06-07T21:11:25Z 1995 Article 2072-6589 http://hdl.handle.net/10883/2304 10.4314/acsj.v3i1.54569 English CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose. Open Access PDF Ethiopia African Crop Science Society 1 3 African Crop Science Journal |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Competition TRITICUM AESTIVUM WEEDS WILD PLANTS AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Competition TRITICUM AESTIVUM WEEDS WILD PLANTS |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Competition TRITICUM AESTIVUM WEEDS WILD PLANTS AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Competition TRITICUM AESTIVUM WEEDS WILD PLANTS Tanner, D.G. Giref Sahile Workiye Tilahun Competitive ability of Ethiopian spring bread wheat cultivars with Avena fatua L. |
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Competitive interactions of four spring bread wheat cultivars ( Triticum aestivum check for this species in other resources L.) with four wild oat ( Avena fatua check for this species in other resources L.) seedling densities were assessed in field studies in southeastern Ethiopia during three cropping seasons (1991-93). Grain yield of wheat was linearly proportional to the seedling density of wild oats, but yield reductions at the maximum density of 90 weed seedlings m-2 ranged from 26 to 63% across the wheat cultivars. The semidwarf cultivar Dashen was the most sensitive to wild oat competition, while the intermediate height cultivar Enkoy was the least affected. Wheat cultivars varied markedly in their ability to suppress A. fatua tillering and seed production, differentially affecting wild oat seed and straw yield, panicle production, seed number panicle-1, and thousand kernel weight. Given the limited access of Ethiopian peasant farmers to grass herbicides, wheat breeders should be encouraged to exploit such variability, and develop germplasm with a greater inherent ability to compete with wild oats. |
format |
Article |
topic_facet |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Competition TRITICUM AESTIVUM WEEDS WILD PLANTS |
author |
Tanner, D.G. Giref Sahile Workiye Tilahun |
author_facet |
Tanner, D.G. Giref Sahile Workiye Tilahun |
author_sort |
Tanner, D.G. |
title |
Competitive ability of Ethiopian spring bread wheat cultivars with Avena fatua L. |
title_short |
Competitive ability of Ethiopian spring bread wheat cultivars with Avena fatua L. |
title_full |
Competitive ability of Ethiopian spring bread wheat cultivars with Avena fatua L. |
title_fullStr |
Competitive ability of Ethiopian spring bread wheat cultivars with Avena fatua L. |
title_full_unstemmed |
Competitive ability of Ethiopian spring bread wheat cultivars with Avena fatua L. |
title_sort |
competitive ability of ethiopian spring bread wheat cultivars with avena fatua l. |
publisher |
African Crop Science Society |
publishDate |
1995 |
url |
http://hdl.handle.net/10883/2304 |
work_keys_str_mv |
AT tannerdg competitiveabilityofethiopianspringbreadwheatcultivarswithavenafatual AT girefsahile competitiveabilityofethiopianspringbreadwheatcultivarswithavenafatual AT workiyetilahun competitiveabilityofethiopianspringbreadwheatcultivarswithavenafatual |
_version_ |
1756086400839581696 |