2021. Effect of Boron and Nitrogen Level under Different Plant Spacings on some Growth and Yield Parameters of Broccoli (Brassica oleracea var. italica Plenck) in a gypsiferous soil. College of Basic Education Research Journal. 17, 2 (Jul. 2021), 1387–1418. DOI:https://doi.org/10.33899/berj.2021.168549.