Jagdev SinghDahiya, Seema2016-10-252016-10-252016http://krishikosh.egranth.ac.in/handle/1/81715A field experiment entitled “Performance of two rowed barley under various seed rate, spacing and nitrogen levels” was conducted during the rabi season of 2014-15 at Agronomy Research Farm of Chaudhary Charan Singh, Haryana Agricultural University, Hisar. The experiment consisted of two seed rates (87.5 and 100 kg/ha) and three spacings (22, 20 and 18 cm) in main plots and four nitrogen levels (60, 75, 90 and 105 kg N/ha) in sub plots. The 24 treatment combinations were tested in split plot design with three replications. Based on research investigation it was found that application of 100 kg/ha seed rate significantly improved plant stand, growth parameters, yield attributes except 1000- grain weight, yields, harvest index, protein yield, malt yield and nutrient uptake as compared to 87.5 kg/ha. However, quality parameters like bold grain (%), hectoliter weight, starch content, protein content, husk content, malt recovery (%) and nutrient content were statistically similar under both seed rates. Row spacing of 18 cm gave significantly higher number of grains per spike, grain yield, straw yield, malt yield and total uptake as compared to 22 cm but was at par with 20 cm. However row spacing of 18 cm was significantly superior in respect of plant stand, growth parameters, effective tillers, biological yield as compared to both 20 and 22 cm. Dry matter accumulation, LAI, number of tillers, all the yield attributes, grain yield, biological yield, protein yield, malt yield, N content and total NPK uptake increased significantly up to 90 kg N/ha. However, plant height and straw yield increased significantly up to 105 kg N/ha. At higher seed rate of 100 kg/ha, row spacing of 20 and 18 cm produced statistically similar yield whereas at 87.5 kg/ha seed rate 18 cm row spacing produced significantly more grain yield than 20 and 22 cm. Also straw and biological yield increased up to 105 kg N/ha with seed rate of 100 kg/ha, whereas at lower seed rate (87.5 kg/ha) the yield with 90 and 105 kg N/ha were statistically at par. Two rowed barley gave significantly higher net returns and benefit– cost ratio with 100 kg/ha seed rate, 80 cm row spacing and 90 kg N /ha.enSowing, Yields, Spacing, Barley, Grain, Nitrogen, Planting, Developmental stages, Malt, Crop residuesThesis