Critical period of weed control in aerobic rice
Critical period of weed control is the foundation of integrated weed management and, hence, can be considered the first step to design weed control strategy. To determine critical period of weed control of aerobic rice, field trials were conducted during 2010/2011 at Universiti Putra Malaysia. A qua...
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| Format: | Article |
| Language: | English |
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Hindawi Publishing Corporation
2012
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| Online Access: | http://psasir.upm.edu.my/id/eprint/56163/ http://psasir.upm.edu.my/id/eprint/56163/1/56163.pdf |
| _version_ | 1848853005495959552 |
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| author | Anwar, Md. Parvez Juraimi, Abdul Shukor Samedani, Batoul Puteh, Adam Man, Azmi |
| author_facet | Anwar, Md. Parvez Juraimi, Abdul Shukor Samedani, Batoul Puteh, Adam Man, Azmi |
| author_sort | Anwar, Md. Parvez |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Critical period of weed control is the foundation of integrated weed management and, hence, can be considered the first step to design weed control strategy. To determine critical period of weed control of aerobic rice, field trials were conducted during 2010/2011 at Universiti Putra Malaysia. A quantitative series of treatments comprising two components, (a) increasing duration of weed interference and (b) increasing length of weed-free period, were imposed. Critical period was determined through Logistic and Gompertz equations. Critical period varied between seasons; in main season, it started earlier and lasted longer, as compared to off-season. The onset of the critical period was found relatively stable between seasons, while the end was more variable. Critical period was determined as 7–49 days after seeding in off-season and 7–53 days in main season to achieve 95% of weed-free yield, and 23–40 days in off-season and 21–43 days in main season to achieve 90% of weed-free yield. Since 5% yield loss level is not practical from economic view point, a 10% yield loss may be considered excellent from economic view point. Therefore, aerobic rice should be kept weed-free during 21–43 days for better yield and higher economic return. |
| first_indexed | 2025-11-15T10:47:06Z |
| format | Article |
| id | upm-56163 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:47:06Z |
| publishDate | 2012 |
| publisher | Hindawi Publishing Corporation |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-561632017-07-04T02:46:08Z http://psasir.upm.edu.my/id/eprint/56163/ Critical period of weed control in aerobic rice Anwar, Md. Parvez Juraimi, Abdul Shukor Samedani, Batoul Puteh, Adam Man, Azmi Critical period of weed control is the foundation of integrated weed management and, hence, can be considered the first step to design weed control strategy. To determine critical period of weed control of aerobic rice, field trials were conducted during 2010/2011 at Universiti Putra Malaysia. A quantitative series of treatments comprising two components, (a) increasing duration of weed interference and (b) increasing length of weed-free period, were imposed. Critical period was determined through Logistic and Gompertz equations. Critical period varied between seasons; in main season, it started earlier and lasted longer, as compared to off-season. The onset of the critical period was found relatively stable between seasons, while the end was more variable. Critical period was determined as 7–49 days after seeding in off-season and 7–53 days in main season to achieve 95% of weed-free yield, and 23–40 days in off-season and 21–43 days in main season to achieve 90% of weed-free yield. Since 5% yield loss level is not practical from economic view point, a 10% yield loss may be considered excellent from economic view point. Therefore, aerobic rice should be kept weed-free during 21–43 days for better yield and higher economic return. Hindawi Publishing Corporation 2012 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/56163/1/56163.pdf Anwar, Md. Parvez and Juraimi, Abdul Shukor and Samedani, Batoul and Puteh, Adam and Man, Azmi (2012) Critical period of weed control in aerobic rice. The Scientific World Journal, 2012. art. no. 603043. pp. 1-10. ISSN 2356-6140; ESSN: 1537-744X https://www.hindawi.com/journals/tswj/2012/603043/abs/ 10.1100/2012/603043 |
| spellingShingle | Anwar, Md. Parvez Juraimi, Abdul Shukor Samedani, Batoul Puteh, Adam Man, Azmi Critical period of weed control in aerobic rice |
| title | Critical period of weed control in aerobic rice |
| title_full | Critical period of weed control in aerobic rice |
| title_fullStr | Critical period of weed control in aerobic rice |
| title_full_unstemmed | Critical period of weed control in aerobic rice |
| title_short | Critical period of weed control in aerobic rice |
| title_sort | critical period of weed control in aerobic rice |
| url | http://psasir.upm.edu.my/id/eprint/56163/ http://psasir.upm.edu.my/id/eprint/56163/ http://psasir.upm.edu.my/id/eprint/56163/ http://psasir.upm.edu.my/id/eprint/56163/1/56163.pdf |