Assessment of allelopathic potential of barnyard grass (Echinochloa crus-galli) on rice (Oryza sativa L.) cultivars

摘要: Abstract Laboratory, greenhouse and field studies were conducted to assess the allelopathic potential of 44 rice cultivars ( Oryza sativa L.) on barnyard grass Echinochloa crus-galli P. Beauv. var. oryzicola Ohwi). Rice exhibited marked differences in inhibition growth development. In laboratory, Gin shun cultivar extracts greatest activity weed seedling growth, reducing dry weight by 61%, while Kasarwala mundara seed germination, germination 23% speed 46%. a study residue mixture, Philippine 2 showed percentage emergence (57%), total length (74%) (73%). study, Juma 10 demonstrated most inhibitory effect tiller number (80%), leaf area (49%) (61%) stem (68%). These results suggest that there are among varieties for grass, development suppressive have greater may be possible.