GROWTH AND YIELD OF CAULIFLOWER AS AFFECTED BY BORON AND FERTILIZER TYPE

摘要

Synthetic fertilizers can cause environmental problems when used in long term. It is necessary to use other types of materials to fertilize plants. Application of boron to leaves of cauliflower can increase yield. The experiment was conducted in Babylon city, Iraq, to determine effects on growth and yield of cauliflower (Brassica oleracea var. botrytis L.). The experiment included application of boron at 30 mg.L-1,to foliage, the control was no boron. Also, commercially available liquid urea at 1 g.L-1; humic acid at 5 mL.L-1, Higro Amin-L at 5 mL-L-1, and Maxinim at 5 mL.L-1 were applied to soil. Heads were harvested before opening. The interaction between boron and humic acid increased plant height, number of leaves per plant, leaf area per plant, curd diameter, curd weight, total curd yield, dry matter percent of curds, and contributed to the highest percent nitrogen and boron in curds.