SURBHI KUMAR et al. 2026. Effect of organic nitrogen management options on productivity and profitability of kharif sunflower (Helianthus annuus L.) under guava (Psidium guajava L.) based agri-horti system: N MANAGEMENT ON SUNFLOWER UNDER GUAVA AGRI-HORTI SYSTEM. Journal of Oilseeds Research. 42, 3&4 (Jan. 2026), 265–270. DOI:https://doi.org/10.56739/aaztjq08.