Nitrogen (N) and sulfur (S) play a crucial role in improving the grain yield and oil quality of oil crops. An experiment entitled “Integrated effect of nitrogen and sulphur levels on productive traits and quality of black cumin (Nigella sativa L.)” was conducted at Agricultural Research Farm, The University of Haripur during November to May (Rabi season), 2020-21. The treatments consisted of four levels of nitrogen viz., 0, 20, 40 and 60 kgha^-1 and sulphur viz. 0, 3, 6, 9 and 12 kgha^-1. The experiment was laid out in a randomized complete block design (two factor factorial) replicated thrice. Nitrogen and sulphur levels singly as well as in combination had significant effect on most of the characters studied. Significant effect of nitrogen levels, sulphur levels as well as their interaction were observed for Plant height (cm), capsules plant^-1, seeds capsule^-1, 1000 grain weight (g), biological yield (kgha^-1), grain yield (kgha^-1), nitrogen use efficiency and protein content (%).  Application of nitrogen @ 40 kgha^-1 coupled with sulphur at the rate of 12kgha^-1 showed promising results regarding production and quality of black cumin. As this study was only conducted using nitrogen and sulphur, it is advisable to conduct an experiment with various essential plant nutrients along with growth regulators to check their synergistic effects for more reliable and acceptable recommendations in future.

Keywords: Nitrogen, black cumin, sulphur, Nitrogen use efficiency