Impact of Different Levels of Sulphur and Foliar Application of Boron on Zaid Sunflower

The study was conducted during the Zaid season of 2022 on Sunflower crop at the crop research farm (CRF) in the Department of Agronomy, SHUATS, Prayagraj (U.P.) India, which is located at 25024' 42" N latitude, 810 50' 56" E longitude and 98 m altitude above the mean sea level, for evaluating the impact of different levels of Sulphur and foliar application of boron on sunflower crop. The experimental design consisted of 10 treatments, including a control, with 3 levels of Sulphur (40, 45, and 50 kg/ha) and 3 levels of Boron (200 ppm at 30 and 45 days and 100 ppm at 30 and 45 DAS). The experiment was arranged in a Randomized Block Design (RBD) with ten treatments and three replications. The results revealed that application of Sulphur 50 kg/ha in combination with Boron 100 ppm at 30 and 45 DAS showed the highest stem girth (2.96 cm), plant dry weight (50.67g/plant) and the yield attributes namely number of seeds per capitulum (367.86), Test weight (40.84 g), Seed yield (1.48t/ha) and Stover yield (3.87t/ha) and the highest benefit cost ratio (1.70).