Sunflower growth and development rely on sufficient supply of macro and micro nutrients, besides other macro nutrients nitrogen and sulfur are vital for plant growth. In order to study the effect of nitrogen and sulfur on sunflower growth a two year trail was conducted. The trail was consisted of four nitrogen (0, 60, 90 and 120 kg ha^‑1) and four sulfur (0, 15, 30 and 45 kg ha^-1) levels with and without green manuring of berseem crop. Growth and phenological characteristics of sunflower was studied during the trail. The results of the study indicated that days to emergence and emergence m^-2 were not significantly affected by any of the factors studied. However, days to flower opening and maturity was significantly affected by green manuring, nitrogen and sulfur levels. Similarly leaf area and dry matter production were also significantly affected by green manuring, nitrogen and sulfur levels. Green manuring with berseem crop delayed flower opening and maturity as well as produced greater leaf area and dry matter in comparison with no green manuring. Addition of 120 kg N and 45 kg S ha^-1 significantly delayed flower opening and maturity, moreover leaf area and dry matter production was also higher at these levels. However, higher values of the studied traits were also recorded with interactive effect of green manuring along with nitrogen at the rate of 90 kg ha^-1. Therefore it is concluded that application of 120 kg N alone or 90 kg with green manuring is similar for enhancing sunflower growth and sulfur application at the rate of 45 kg ha^-1.

Key word- Sunflower, Growth, Green Manure, Dry matter, Phenology, Nitrogen and Sulfur.