Abstract
Field experiment was conducted in the season of 2001-2002 to study the effect of mixture of three concentrations of cultar (0, 1000, 2000ppm) with two concentrations of prominal (0, 1000ppm) and three levels of nitrogen (0, 20, 40, kg/ donum) on growth and yield of Barley (local black). The results indicated that cultar reduced plant height upper amnd lower internode and increased number of tillers, number of spike per plant, number of seed per spike and number of seed per plant. No significant have been shown from cultar on spike and 1000 wight of grain characters. Prominal decreased slightly plant length and upper internode length. The results also indicate significant increase in the plant height, internode length, number seed per spike, nimber of seed per plant, with nitrogen fertilizwes. The effect of interaction between the two and three factors in this study were obvious by decreasing plant height and increasing tillers number, number of seeds per spike, number of seed per plant with high concentrations. It was concluded that the effect of interaction between cultar and nitrogen decreased plant length and increased the yield per plant .
