This study was aimed to evaluate the effect of cultivars, nano , foliar application of seaweed extracts , on broccoli leaves (Brassica oleracea var. italica). The findings demonstrated that both cultivars mofed and Agassi have significant differences in terms of vegetative growth characters, All studied traits in both cultivars were significantly increased by the Agassi RZ cultivar during the study seasons. It was also observed that adding seaweed extract significantly increased all investigated traits in both cultivars. The interactions between nano and seaweed extract were marked by the elevation of most detected traits. Combination between them significantly impacted most measures, whereas 6g.L-1 and 8g.L seaweed extract produced the greatest overall result in all vegetative growth parameters (Number of leaf.plant-1, plant high (cm), stem length (cm) , branch number. Plant-1 and chlorophyll contents (SPAD). Regarding nutrients contents, significant differences were showed. The combination among three factors was significant enhanced all studied traits. The levels of Pb and Cd in the heads of two broccoli varieties were within the acceptable limits for these metals in vegetables.
Broccoli (Brassica oleracea var. Italica ) is considered one of the winter vegetables crops, it belongs to the Brassicaceae family, It is an annual herbaceous plant similar morphology of cauliflower plant, it is considered one of the few plants in Iraq, it ranks 31 globally in terms of production, which is from a crops of cold season cultivated throughout the year in cold regions, It is also a vegetable rich in chemical compounds that have shown anti-cancer properties, where it was noted that eating more than one meal during the week reduces the risk of this disease with a ratio of (45%), It also helps prevent eye diseases