EXPLORING THE ALLELOPATHIC EFFECT OF AQUEOUS EXTRACT OF WILD RADISH (Raphanus raphanistrum L.) ON TURNIP (Brassica rapa subsp. Rapa)
The present study was designed to investigate the allelopathic effect of aqueous extract of wild radish on seed germination and seedling growth of turnip. The laboratory experiment was performed in the Department of Agronomy, College of Agriculture, the University of Sargodha in 2021. The experiment was placed out in a CRD arrangement having four replicates Different concentrations of aqueous extract of wild radish (0.0 %, 3.0 %, 6%, 9.0% and 12.0 %) were applied on ten seed of tested turnip vegetable. Data regarding emergence and seedling growth of turnip. It was observed from this study that maximum emergence percentage (91.00 %), shoot length (6.10 cm), root length (7.13 cm), fresh biomass (1.43 g), dry biomass (0.48 g) and minimum time to start emergence (2.86 days), mean emergence time ( 8.24 days), time to complete 50% emergence (4.10 days) was observed under control while minimum emergence percentage (20.00 %), shoot length (1.84 cm), root length (1.59 cm), fresh biomass (0.21 g), dry biomass(0.07) and maximum time to start emergence (6.19 days), mean emergence time (21.26 days), time complete 50% emergence (10.93 days) was observed with 12.0% aqueous extract concentration wild radish. The results revealed that wild radish extract put destructive effects on the emergence and seedling development of tested vegetables. It was observed that inhibit tory effect depends on the level of concentration. Therefore, it can be used as a bioherbicide to manage weeds without polluting the environment.
Keywords: Allelopathy, bioherbicide, emergence, seedling growth and environment.