Effect of Sulphur Sources and Their Rates on Yield, Growth Parameters, Uptake of Nutrients and Quality of Sunflower

A field experiment was conducted to study the effect of different levels (0.20, 40 and 60 kg S ha^-1) and sources of sulphur (Gypsum and Gromor Sulphur Pastilles) on yield, growth parameter, nutrient uptake and quality of sunflower in sulphur deficient soil. The study revealed that the highest grain yield of 1282.80 kg ha^-1 was obtained with the treatment including NPK+60 kg ha^-1 S Bentonite which was significantly different from all other treatments but was at par with (NPK+40 kg S Bentonite. The growth parameters i.e. diameter of Sunflower head and number of seeds per flower were recorded highest with the treatment NPK+60 kg ha^-1 Beutonite. The highest nutrient uptake of N,P,K and S as well as the quality parameter i.e. oil content and oil yield were obtained in with the treatment containing NPK+60 kg ha^-1 Beutonite and significantly superior over control. Hence, sulphur in form of Gypsum or Gromor Sulphur Pastilles (Bentonite) improves the oil content and oil yield of Sunflower.