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Competitiveness of Rice (Oryza sativa L.) Cultivars against Barnyardgrass (Echinochloa crus-galli (L.) P. Beauv.) in Lowland Rice Fields
| Content Provider | Semantic Scholar |
|---|---|
| Author | Aminpanah, Hashem Sorooshzadeh, Ali Zand, Eskandar Moumeni, Ali |
| Copyright Year | 2013 |
| Abstract | The main objective of this research was to compare the competitive ability of rice cultivars and lines against barnyardgrass. A field experiment was conducted at Rice Research Station in Tonekabon, Iran. The layout of the experiment was a factorial design with four randomized complete blocks. Seven rice cultivars and three lines were transplanted with and without barnyardgrass. Each cultivar or line was transplanted at its own optimum density, while the density of barnyardgrass was 20 plants per square meter. Results showed that for all rice cultivars or lines, yield and yield components were significantly reduced by barnyardgrass competition. Moreover, there was a significant difference among rice cultivars and lines in the relative yield loss under weedy condition, competitive index (CI) and ability to withstand competition (AWC). Line 843 had the minimum relative yield loss (18%), highest CI and AWC, while Khazar cultivar had maximum relative yield loss (50.65%), lowest CI and AWC. Therefore, this experiment demonstrated that the Line 843 was more competitive against barnyardgrass than the other cultivars and lines. |
| Starting Page | 209 |
| Ending Page | 217 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| Volume Number | 46 |
| Alternate Webpage(s) | http://www.thaiscience.info/journals/Article/TJAS/10906818.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
