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Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 72, No. 3, 2012, pp. 364-370
Bioline Code: cj12057
Full paper language: English
Document type: Research Article
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 72, No. 3, 2012, pp. 364-370

 en INTERFERENCE INTERACTIONS OF TWO SPECIES OF Echinochloa check for this species in other resources GENUS WITH RICE
Aminpanah, Hashem; Sharifi, Peyman & Firouzi, Saeed

Abstract

The aim of this study was to evaluate the relative competitive ability of barnyardgrass (BYG, Echinochloa crus-galli check for this species in other resources (L.) P. Beauv.) compared to rice barnyardgrass (ECPH, E. oryzicola check for this species in other resources (Vasinger) Vasinger) against rice ( Oryza sativa check for this species in other resources L.) cv. Hashemi in a replacement series study. Experiment was arranged in randomized complete block design with three replicates using a factorial treatment arrangement. Factors were two species of Echinochloa genus (BYG and ECPH) and five rice:BYG or rice:ECPH mixture proportions (8:0, 6:2, 4:4, 2:6, and 0:8). Relative yield total of aboveground dry weight, root dry weight and leaf area indicated that BYG or ECPH were competing for the same resources with 'Hashemi'. In general, replacement series curves and relative crowding coefficient (RCC) values demonstrated that both BYG and ECPH were more competitive than 'Hashemi'. BYG had significantly higher aboveground dry weight, root dry weight, tiller number, leaf area, and plant height than ECPH, when grown with 'Hashemi'. This experiment confirmed that BYG was more competitive than ECPH against 'Hashemi'.

Keywords
Echinochloa crus-galli, competitiveness, interference, Oryza sativa, Echinochloa oryzicola

 
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