SINGH, KULDEEP, et al. “Effect of Boron on Sunflower (Helianthus Annuus) Productivity and Grain Composition under Sulphate Dominated Saline Conditions”. The Indian Journal of Agricultural Sciences, vol. 90, no. 2, Mar. 2020, pp. 423-7, https://doi.org/10.56093/ijas.v90i2.99048.