Effect of plant spacing and nitrogen levels on nutritional quality of Broccoli (Brassica oleracea L.)

Abstract

The study was carried out in the research field and laboratory of the Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur-1706 during October 2011 to April 2012 to determine optimum level of nitrogen and spacing for improving the nutritional quality of broccoli. There were 15 treatments in the experiment comprising five levels of N viz., 0, 80, 120,160, and 200 kg/ha and three plant spacings viz., 60cm x 60cm, 60cm × 45cm, and 60cm × 30cm. The results revealed that the highest ascorbic acid content (50.38 mg/100g) was obtained from S_60X30N₀ and the highest b-carotene content (50.67 IU/100g) was found in S_60X60N₀. Maximum Ca (0.556%) was found in S_60X60N₀ whereas maximum Fe (159.002 ppm) was in S_60X60N₂₀₀. The maximum P content (0.081%) was observed in S_60X60N₁₆₀ and maximum K content (0.854%) was found in S_60X45N₁₆₀.

DOI: http://dx.doi.org/10.3329/bjar.v39i3.21992

Bangladesh J. Agril. Res. 39(3): 491-504, September 2014