Allelopathic effects of Marsilea crenata Presl. extracts and residues on weeds suppression & rice yield (Oryza sativa L.)
Allelopathic effects of Marsilea crenata Presl. extracts and residues on weeds suppression & rice yield (Oryza sativa L.)
- Author(s) M.S. Islam, M.L. Mia, M.R. Islam, M.G. Kibria, A.K. Hasan and M.A. Salam
- Year: 2025
- Month: November
- Volume: 66
- Pages: 165-178
Biotic weed management is increasingly needed in sustainable rice production. Plant-based extracts and residues offer environmentally friendly alternatives to decrease neighbouring plant growth. This study examined the inhibitory effects of Marsilea crenata Presl.extracts and residues on weed growth and rice (Oryza sativa L.) yield in pot and field settings. The pot employed M. crenata extracts at 0 % (control), 25 %, 50 %, 75 % and 100 %, whereas the field experiment used residues (0, 1.0, 2.0 and 3.0 t ha-1 including farmer practices (2-hand weedings) and three rice varieties (BRRI dhan28, BRRI dhan29 and BRRI dhan60). Rice cultivars, M. crenata extracts and residue treatments significantly influenced weed dynamics. Higher extract concentrations of M. crenata reduced weeds biomass in pots, while in field study, residue application of M. crenata at 3 t ha?ยน reduced weeds density. This highest residue level also maximized rice tillers hill-1, 1000-grain weight and grain yields. These findings suggested that M. crenata residues effectively suppressed the weeds growth and increased rice yield, offering a promising bio-based strategy for sustainable weeds management
