A field trial was laid out during Zaid 2021 at Crop Research Farm, Department of Agronomy, SHUATS, Prayagraj (U.P.). The soil of trial plot was sandy loam in texture, nearly neutral in soil reaction (pH 7.3), low in organic carbon (0.57%), available N (230 kg/ha), available P (32.10 kg/ha) and available K (235 kg/ha). The treatments consist of two levels of sulphur soil application and four levels of boron with a control. The trial was laid out in randomized block design with nine treatments each replicated thrice. It is concluded that application of 40 kg/ha Sulphur + 1.5 kg/ha Boron recorded considerably greater grain yield (1429.28 kg/ha), gross return (83,988.16 `/ha), net return (56,258.92 `/ha) and benefit cost ratio (2.16). These findings are based on one season; therefore, further trail may be required for further confirmation. The oil and protein contents of sunflower and mustard were significantly and synergistically improved by the application of both sulphur and boron

Sunflower, zaid, Sulphur, boron, yield and economics