Critical period competition between Fimbristylis miliacea (L.) Vahl and rice (MR 220)
The establishment of the critical period of specific crop-weed interference is an important step in the development of effective and sustainable integrated weed management approach. Fimbristylis miliacea was allowed to compete with rice at different growth periods after rice emergence before removal...
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| Format: | Article |
| Language: | English |
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Plant Protection Quarterly
2008
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| Online Access: | http://psasir.upm.edu.my/id/eprint/13825/ http://psasir.upm.edu.my/id/eprint/13825/1/Critical%20period%20competition%20between%20Fimbristylis%20miliacea.pdf |
| _version_ | 1848842221058523136 |
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| author | Mahfuza Begum, Juraimi, Abdul Shukor Amarthalingam, Rajan Syed Rastan, Syed Omar Man, Azmi |
| author_facet | Mahfuza Begum, Juraimi, Abdul Shukor Amarthalingam, Rajan Syed Rastan, Syed Omar Man, Azmi |
| author_sort | Mahfuza Begum, |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The establishment of the critical period of specific crop-weed interference is an important step in the development of effective and sustainable integrated weed management approach. Fimbristylis miliacea was allowed to compete with rice at different growth periods after rice emergence before removal by hand. In order to evaluate the onset of the critical period of weed removal, plots were left weedy for 14, 28, 42, 56 and 70 days after sowing, after which the weeds were removed and the pots maintained weed-free until harvest. To determine the end of the critical period, another set of pots were kept weed-free for 14, 28, 42, 56 and 70 days after sowing and subsequently weeds were allowed to grow until harvest. Full term weedy and weed-free treatments were included as controls for comparison. Grain yield reduction caused by increasing durations of F. miliacea competition was accompanied by high weed dry matter which simultaneously reduced rice straw biomass and number of productive tillers. Based on the predicted Logistic and Gompertz response curves, the critical period for controlling F. miliacea in direct-seeded rice was between 14-28 days after sowing. |
| first_indexed | 2025-11-15T07:55:41Z |
| format | Article |
| id | upm-13825 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:55:41Z |
| publishDate | 2008 |
| publisher | Plant Protection Quarterly |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-138252015-10-23T07:33:37Z http://psasir.upm.edu.my/id/eprint/13825/ Critical period competition between Fimbristylis miliacea (L.) Vahl and rice (MR 220) Mahfuza Begum, Juraimi, Abdul Shukor Amarthalingam, Rajan Syed Rastan, Syed Omar Man, Azmi The establishment of the critical period of specific crop-weed interference is an important step in the development of effective and sustainable integrated weed management approach. Fimbristylis miliacea was allowed to compete with rice at different growth periods after rice emergence before removal by hand. In order to evaluate the onset of the critical period of weed removal, plots were left weedy for 14, 28, 42, 56 and 70 days after sowing, after which the weeds were removed and the pots maintained weed-free until harvest. To determine the end of the critical period, another set of pots were kept weed-free for 14, 28, 42, 56 and 70 days after sowing and subsequently weeds were allowed to grow until harvest. Full term weedy and weed-free treatments were included as controls for comparison. Grain yield reduction caused by increasing durations of F. miliacea competition was accompanied by high weed dry matter which simultaneously reduced rice straw biomass and number of productive tillers. Based on the predicted Logistic and Gompertz response curves, the critical period for controlling F. miliacea in direct-seeded rice was between 14-28 days after sowing. Plant Protection Quarterly 2008 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/13825/1/Critical%20period%20competition%20between%20Fimbristylis%20miliacea.pdf Mahfuza Begum, and Juraimi, Abdul Shukor and Amarthalingam, Rajan and Syed Rastan, Syed Omar and Man, Azmi (2008) Critical period competition between Fimbristylis miliacea (L.) Vahl and rice (MR 220). Plant Protection Quarterly, 23 (4). pp. 153-157. ISSN 0815-2195 |
| spellingShingle | Mahfuza Begum, Juraimi, Abdul Shukor Amarthalingam, Rajan Syed Rastan, Syed Omar Man, Azmi Critical period competition between Fimbristylis miliacea (L.) Vahl and rice (MR 220) |
| title | Critical period competition between Fimbristylis miliacea (L.) Vahl and rice (MR 220) |
| title_full | Critical period competition between Fimbristylis miliacea (L.) Vahl and rice (MR 220) |
| title_fullStr | Critical period competition between Fimbristylis miliacea (L.) Vahl and rice (MR 220) |
| title_full_unstemmed | Critical period competition between Fimbristylis miliacea (L.) Vahl and rice (MR 220) |
| title_short | Critical period competition between Fimbristylis miliacea (L.) Vahl and rice (MR 220) |
| title_sort | critical period competition between fimbristylis miliacea (l.) vahl and rice (mr 220) |
| url | http://psasir.upm.edu.my/id/eprint/13825/ http://psasir.upm.edu.my/id/eprint/13825/1/Critical%20period%20competition%20between%20Fimbristylis%20miliacea.pdf |