In eastern Uttar Pradesh, the yield potential of sunflower hybrids and composites is governed by a synergy of agrotechnological factors, including nitrogen application, plant spacing, soil fertility, and cultivar selection. Optimal nitrogen levels (around 70 kg/ha) and precise spacing (e.g., 55×20 cm) significantly enhance plant height, capitulum diameter, and seed weight. Hybrids respond more favourably to these inputs due to their genetic uniformity and higher nutrient-use efficiency, while composites show greater adaptability under sub-optimal conditions. Soil type, typically sandy loam with neutral pH, and timely sowing also play critical roles in maximising productivity. Thus, tailored agronomic practices aligned with cultivar type are key to unlocking sunflower yield potential in this region.