Germination ecology of goosegrass (Eleusine indica): an important grass weed of rainfed rice
Goosegrass is considered one of the most important grassy weeds of rice, particularly in rain-fed environments. Experiments were conducted in laboratory, screenhouse, and field to study the germination ecology of goosegrass seeds. In the laboratory, germination was greater at higher alternating temp...
| Autores principales: | , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Cambridge University Press
2008
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/165118 |
| _version_ | 1855537222111985664 |
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| author | Chauhan, Bhagirath S. Johnson, David E. |
| author_browse | Chauhan, Bhagirath S. Johnson, David E. |
| author_facet | Chauhan, Bhagirath S. Johnson, David E. |
| author_sort | Chauhan, Bhagirath S. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Goosegrass is considered one of the most important grassy weeds of rice, particularly in rain-fed environments. Experiments were conducted in laboratory, screenhouse, and field to study the germination ecology of goosegrass seeds. In the laboratory, germination was greater at higher alternating temperatures (30/20 and 35/25 C) than at the lowest alternating temperatures (25/15 C). An after-ripening period of at least 3 mo was required to improve the germination of goosegrass. Germination was tolerant of salt stress but sensitive to a high degree of water stress. A pH range of 5 to 10 did not influence seed germination (92 to 95%). In the screenhouse study, seedling emergence of goosegrass was greatest (82%) for seeds placed on the soil surface, but decreased exponentially after that, no seedlings emerged at a burial depth of 8 cm. Seedling emergence and seedling dry matter declined markedly with the addition of crop residue to the soil surface at rates equivalent to 4 to 6 ton (t) ha−1. In the field, seedling emergence of goosegrass was greater under zero-till (ZT; 16 to 18%) than under minimum tillage (MINT; 8 to 11%). Because seedling emergence was greater from surface-sown seeds and emergence was favored by ZT, this species is likely to become a problematic weed in ZT systems. The information gained from this study could be used in developing effective weed management strategies. |
| format | Journal Article |
| id | CGSpace165118 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace1651182024-12-19T14:13:25Z Germination ecology of goosegrass (Eleusine indica): an important grass weed of rainfed rice Chauhan, Bhagirath S. Johnson, David E. crop residues ecology emergence germination seeds seedling emergence temperature weeds weed control eleusine indica Goosegrass is considered one of the most important grassy weeds of rice, particularly in rain-fed environments. Experiments were conducted in laboratory, screenhouse, and field to study the germination ecology of goosegrass seeds. In the laboratory, germination was greater at higher alternating temperatures (30/20 and 35/25 C) than at the lowest alternating temperatures (25/15 C). An after-ripening period of at least 3 mo was required to improve the germination of goosegrass. Germination was tolerant of salt stress but sensitive to a high degree of water stress. A pH range of 5 to 10 did not influence seed germination (92 to 95%). In the screenhouse study, seedling emergence of goosegrass was greatest (82%) for seeds placed on the soil surface, but decreased exponentially after that, no seedlings emerged at a burial depth of 8 cm. Seedling emergence and seedling dry matter declined markedly with the addition of crop residue to the soil surface at rates equivalent to 4 to 6 ton (t) ha−1. In the field, seedling emergence of goosegrass was greater under zero-till (ZT; 16 to 18%) than under minimum tillage (MINT; 8 to 11%). Because seedling emergence was greater from surface-sown seeds and emergence was favored by ZT, this species is likely to become a problematic weed in ZT systems. The information gained from this study could be used in developing effective weed management strategies. 2008-10 2024-12-19T12:54:43Z 2024-12-19T12:54:43Z Journal Article https://hdl.handle.net/10568/165118 en Cambridge University Press Chauhan, Bhagirath S.; Johnson, David E. 2008. Germination ecology of goosegrass (Eleusine indica): an important grass weed of rainfed rice. Weed sci., Volume 56 no. 5 p. 699-706 |
| spellingShingle | crop residues ecology emergence germination seeds seedling emergence temperature weeds weed control eleusine indica Chauhan, Bhagirath S. Johnson, David E. Germination ecology of goosegrass (Eleusine indica): an important grass weed of rainfed rice |
| title | Germination ecology of goosegrass (Eleusine indica): an important grass weed of rainfed rice |
| title_full | Germination ecology of goosegrass (Eleusine indica): an important grass weed of rainfed rice |
| title_fullStr | Germination ecology of goosegrass (Eleusine indica): an important grass weed of rainfed rice |
| title_full_unstemmed | Germination ecology of goosegrass (Eleusine indica): an important grass weed of rainfed rice |
| title_short | Germination ecology of goosegrass (Eleusine indica): an important grass weed of rainfed rice |
| title_sort | germination ecology of goosegrass eleusine indica an important grass weed of rainfed rice |
| topic | crop residues ecology emergence germination seeds seedling emergence temperature weeds weed control eleusine indica |
| url | https://hdl.handle.net/10568/165118 |
| work_keys_str_mv | AT chauhanbhagiraths germinationecologyofgoosegrasseleusineindicaanimportantgrassweedofrainfedrice AT johnsondavide germinationecologyofgoosegrasseleusineindicaanimportantgrassweedofrainfedrice |