“…In the researches, the effects of environmental conditions, plant growth, nitrogen doses, boron, borax, sulfur, molybdenum, zinc, planting time and density, seedling age, growth regulators (NAA, GA3) were determined on the formation of hollow stem in broccoli. In the researches, the effects of environmental conditions, plant growth, nitrogen doses, boron, borax, sulfur, molybdenum, zinc, planting time and density, seedling age, and growth regulators were determined on the development of the hollow stem in broccoli (Patel et al, 2017;Jakhar et al, 2018;Sheokand et al, 2018;Farooq et al, 2018;Verma et al, 2018). However, there were not enough studies about the effects of boron applications on hollow stem development in broccoli in Turkey.…”