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. BERJ [Internet]. 2021 Jul. 1 [cited 2026 Jul. 11];17(2):1387-418. Available from: https://berj.uomosul.edu.iq/index.php/berj/article/view/38877