This study investigates the potential of amended compostCompost and its effluent derived from vegetable wastesVegetable wastes as sustainable biomaterialsBiomaterials on agricultural soil using Phaseolus vulgaris L. To determine both compostCompost and effluent quality, some physicochemical parameters (pH, electrical conductivityConductivity, moisture content, ash content, volatile matter, organic matter, total organic carbon, total nitrogen, phosphorus, and potassium) were determined. The compost effluentCompost effluent showed higher pH, moisture content, ash content, potassium, and C/N ratio, while the compostCompost had higher electrical conductivityConductivity, organic matter, total organic carbon, nitrogen, and phosphorus. Both biomaterialsBiomaterials (compostCompost and effluent) demonstrated strong potential for soil enrichmentSoil enrichment and healthy plant growthPlant growth. However, compostCompost was richer in nitrogen and phosphorus, while the effluent had more potassium. Therefore, compostCompost-based biomaterialsBiomaterials are applicable alternatives as low-cost, sustainable soil amendments for improved agricultural productivity.