BUTA SINGH DHILLON and P. K. SHARMA 2018. Influence of foliar application of boron and TIBA on photosynthetic parameters visa- vis productivity of sunflower (Helianthus annuus L.) under variable sowing dates. Journal of Agrometeorology. 20, 1 (Mar. 2018), 16–21. DOI:https://doi.org/10.54386/jam.v20i1.496.