The nematode populations in the soil and the roots of the banana plants were significantly reduced in the 2020–21 and 2021/22 growing seasons when different organic matters, such as compost, cow manure, and plant residue, were added to the organic farm of Williams banana at a rate of 1.2 kg/m² or drenched in a diluted 3:200/fed as recommended dose of vermicompost, Azotobacter chroococcum, and humic acid. Compost, as a banana-rich organic fertiliser at a rate of 1.2 Kg/m², caused the highest decrease in root knot nematode infestations, as well as the highest increase in vegetative growth pseudostem height and girth (cm), leaf area (cm), number of green leaves at bunch shooting, and period to bunch shooting (days); yield parameters; fruit quality "Total soluble solid (TSS), Vitamin C, protein",total sugar, chemical components of flavonoid and total phenol. There were no evident significant changes in plant growth characteristics across the other treatments.