EFFECT OF DIFFERENT LEVELS OF NITROGEN AND SPACING ON THE GROWTH AND YIELD OF STEM AMARANTH (AMARANTHUS LIVIDIS L.)

Abstract

An experiment was conducted to find out the effect of different levels of nitrogen and spacing on the growth and yield of stem amaranth (Amaranthus lividis L.) at Horticulture Farm in Sher-e-Bangla Agricultural University (SAU), Dhaka, during March 15, 2004 to May 15,2004. Three spacing viz.S,;20cmx20cm, S,;20cmx30cm and S,;20cmx40cm and four levels of nitrogen viz. Ns=control, N,;IOOkgNlha, N,;150kgNlha, N,;200kgNlha were used in this experiment. The yield contributing characters such as plant height, leaf length, average number of leaves per plant, average number of branch per plant, stem girth, branched girth and average plant weight were significantly differed among the three spacing and four levels of nitrogen. The maximum plant height (57.67cm), leaf length (21.71cm), average number of leaves per plant (75.58), average number of branch per plant (13.67), stem girth (1.90cm), branch girth (1.31cm) were found from the widest spacing (S,) and the highest dose of nitrogen (N,) and the minimum of all the parameters were found in the closest spacing (S,) and control nitrogen level (No). The highest marketable yield (79.44t1ha) of was found from S,N, and the minimum yield (25.0tlha) was recorded from S,No.