Effect of biological, organic and mineral fertilization on the concentrations of some macro and micro nutrients in cauliflower plant (Brassica oleracea L.)

Abstract

"Abstract. An experimental study was conducted at the University of Anbar in 2019, with a randomized complete block design RCBD with three replicates to study the effects of some fertilizers in concentration of some minerals in cauliflower. A bio-fertilizer of Azobacter chroococcum (P1), Pseudomonas fluorescents (P2) and mixture of P1 and P2 (P3). Organic fertilizers were of two levels, O1 and O2, where manual fertilizers are O, 50% and 100% of recommended dose. Results showed that fertilizers increased concentration of each of N, P, K and Fe in the vegetative parts of cauliflower, besides the significant effect of P3. Mineral and organic fertilizers increased same minerals in cauliflower vegetative tissue. However, the 50% and 100% of recommended mineral fertilizer were not significantly different. "