Wheat productivity is significantly limited by biotic stresses, notably Bipolaris sorokiniana, which are exacerbated by competition for nutrients and space among plants. This study addresses the critical problem of developing sustainable, pesticide-free strategies to enhance wheat defense against pathogens, particularly under competitive conditions. In the present study, we demonstrated BABA priming in wheat against Bipolaris sorokiniana under varying degrees of competition. Our findings indicate that growth parameters were reduced in both primed and non-primed wheat with an increase in the level of competition. However, overall, the primed wheat showed better morphological growth compared to the non-primed at each level of competition. Under disease pressure, BABA- primed performed better than non-primed wheat at each level of competition, and the level of protection was consistent across all competition levels. Biochemical parameters such as photosynthetic pigments, enzymatic and non-enzymatic antioxidants, and defence enzymes suggested that the defence mechanism was activated in primed wheat only after pathogen challenge, ensuring the establishment of the priming effect. Non-primed HD plants exhibited maximum susceptibility under high competition and disease pressure. BABA priming enabled the plants to outweigh the fitness cost and mitigate the effects of competition under pathogen pressure. Additionally, the yield performance of BABA-primed wheat was superior across all competition levels. These results suggest that BABA priming is a viable, pesticide-free approach to enhancing wheat resilience against Bipolaris sorokiniana, particularly in competitive environments. Our research highlights the potential of BABA priming to contribute to sustainable agricultural practices by improving crop protection and yield.