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This research was conducted to evaluate the interactive effects of three mungbean varieties (BARI Mung-6, BARI Mung-7, and Binamoog-8) and five combined phosphorus (P) and zinc (Zn) fertilization levels (control to 150% Recommended Dose, RDF) on growth, yield, and seed quality of Vigna radiata L. Both variety and P+Zn fertilization significantly influenced all measured attributes. The highest fertilization level (150% RDF) significantly increased grain yield to 1.51 t/ha compared to the control (1.11 t/ha). Among varieties, Binamoog-8 (Experiment variety 3, V3) outperformed others, showing the greatest 1000-seed weight (51.42 g) and pods per plant (26.48). A strong synergistic interaction was evident, with the Binamoog-8 × 150% RDF combination yielding the highest grain output (1.66 t/ha) alongside superior seed quality, including a 95.81% germination rate. Conversely, BARI Mung-7 without fertilization demonstrated the lowest productivity and seed quality. These findings indicate that combining high-yielding varieties like Binamoog-8 with an enhanced P and Zn fertilization regime (150% RDF) is an effective strategy to maximize mungbean productivity and seed quality in the targeted agro-ecological zone. This research provides valuable guidance for optimizing fertilization and variety selection to improve mungbean yield and ensure better seed performance under field conditions.