Integrated management of weeds in direct-seeded rice in Cambodia
The objective of this work was to determine the value of improved establishment methods and herbicide applications as alternatives to high seeding rates to improve weed suppression in rice. Field experiments were carried out in 2010 and 2011 to determine optimal seeding rates and seeding methods wit...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2020
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| Acceso en línea: | https://hdl.handle.net/10568/164417 |
| _version_ | 1855537632473251840 |
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| author | Martin, Robert Som, Bunna Janiya, Joel Rien, Ratha Yous, Sophea Chhun, Sokunroth Korn, Chariya |
| author_browse | Chhun, Sokunroth Janiya, Joel Korn, Chariya Martin, Robert Rien, Ratha Som, Bunna Yous, Sophea |
| author_facet | Martin, Robert Som, Bunna Janiya, Joel Rien, Ratha Yous, Sophea Chhun, Sokunroth Korn, Chariya |
| author_sort | Martin, Robert |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The objective of this work was to determine the value of improved establishment methods and herbicide applications as alternatives to high seeding rates to improve weed suppression in rice. Field experiments were carried out in 2010 and 2011 to determine optimal seeding rates and seeding methods with and without weed competition in wet-seeded rice. Under wet seeding conditions, drum seeding at 80 kg ha−1 was the most profitable treatment for both weed-free and unweeded rice. Although pre-emergence herbicides are beginning to be adopted in wet-seeded rice, they are seldom used in dry direct-seeded rice in Cambodia. Experiments were carried out in 2018 and 2019 to test crop tolerance and the efficacy of butachlor, oxadiazon, pendimethalin and pretilachlor applied post-sowing and pre-emergence to dry direct-seeded rice. Oxadiazon and butachlor, with the option for a post-emergence herbicide, provided effective weed control and a high grain yield in dry direct-seeded rice. Pretilachlor did not effectively control weeds under dry seeding conditions. Although pendimethalin exhibited good weed control, crop damage was a risk in poorly prepared seedbeds which typify Cambodian rice systems. With an effective integrated weed management strategy, it might be possible to safely reduce seeding rates below 80 kg ha−1 using drum or drill seeding machines. |
| format | Journal Article |
| id | CGSpace164417 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1644172025-02-19T14:26:40Z Integrated management of weeds in direct-seeded rice in Cambodia Martin, Robert Som, Bunna Janiya, Joel Rien, Ratha Yous, Sophea Chhun, Sokunroth Korn, Chariya The objective of this work was to determine the value of improved establishment methods and herbicide applications as alternatives to high seeding rates to improve weed suppression in rice. Field experiments were carried out in 2010 and 2011 to determine optimal seeding rates and seeding methods with and without weed competition in wet-seeded rice. Under wet seeding conditions, drum seeding at 80 kg ha−1 was the most profitable treatment for both weed-free and unweeded rice. Although pre-emergence herbicides are beginning to be adopted in wet-seeded rice, they are seldom used in dry direct-seeded rice in Cambodia. Experiments were carried out in 2018 and 2019 to test crop tolerance and the efficacy of butachlor, oxadiazon, pendimethalin and pretilachlor applied post-sowing and pre-emergence to dry direct-seeded rice. Oxadiazon and butachlor, with the option for a post-emergence herbicide, provided effective weed control and a high grain yield in dry direct-seeded rice. Pretilachlor did not effectively control weeds under dry seeding conditions. Although pendimethalin exhibited good weed control, crop damage was a risk in poorly prepared seedbeds which typify Cambodian rice systems. With an effective integrated weed management strategy, it might be possible to safely reduce seeding rates below 80 kg ha−1 using drum or drill seeding machines. 2020-10-13 2024-12-19T12:53:52Z 2024-12-19T12:53:52Z Journal Article https://hdl.handle.net/10568/164417 en Open Access MDPI Martin, Robert; Som, Bunna; Janiya, Joel; Rien, Ratha; Yous, Sophea; Chhun, Sokunroth and Korn, Chariya. 2020. Integrated management of weeds in direct-seeded rice in Cambodia. Agronomy, Volume 10 no. 10 p. 1557 |
| spellingShingle | Martin, Robert Som, Bunna Janiya, Joel Rien, Ratha Yous, Sophea Chhun, Sokunroth Korn, Chariya Integrated management of weeds in direct-seeded rice in Cambodia |
| title | Integrated management of weeds in direct-seeded rice in Cambodia |
| title_full | Integrated management of weeds in direct-seeded rice in Cambodia |
| title_fullStr | Integrated management of weeds in direct-seeded rice in Cambodia |
| title_full_unstemmed | Integrated management of weeds in direct-seeded rice in Cambodia |
| title_short | Integrated management of weeds in direct-seeded rice in Cambodia |
| title_sort | integrated management of weeds in direct seeded rice in cambodia |
| url | https://hdl.handle.net/10568/164417 |
| work_keys_str_mv | AT martinrobert integratedmanagementofweedsindirectseededriceincambodia AT sombunna integratedmanagementofweedsindirectseededriceincambodia AT janiyajoel integratedmanagementofweedsindirectseededriceincambodia AT rienratha integratedmanagementofweedsindirectseededriceincambodia AT youssophea integratedmanagementofweedsindirectseededriceincambodia AT chhunsokunroth integratedmanagementofweedsindirectseededriceincambodia AT kornchariya integratedmanagementofweedsindirectseededriceincambodia |