Abstract:
A field experiment was conducted at the experimental farm of the college of
agricultural studies, Sudan University of Science and Technology (SUST), at
Shambat, in Khartoum State, during the winter season 2017/2018, to investigate the
effect of different seeding rate and nitrogen levels on forage and grain yield of
barley. The experiment was designed at a randomized complete block design with
three replicates. Data were recorded on growth and yield parameters. The data were
analyzed using Gen Stat statistical package. The treatments consisted of 4 levels of
seed rate (48, 72, 92 and 120 kg/ha) and 4 levels of N (0, 93,186 and 279 kg/ha),
applied as urea (46% N). Parameters studied included days to 50% heading, plant
height (cm), culm density (m2), number of leaves/plant, number of tillers/plant,
chlorophyll content, fresh matter yield (t/ha), dry matter yield (t/ha), number of
spikes per m2, number of grains per spike, 1000 grain weight, biomass (t/ha) grain
yield (t/ha) and harvest index (%). The results revealed that there was no significant
effect of seeding rate for all parameters, except grain yields (t/ha), while a highly
significantly difference (p≤ 0.01) of nitrogen application of all parameters, except
number of leaves/plant. The interaction of seeding rate and nitrogen levels was not
significant. The best results were obtained at the lower seed rate (48 kg/ha) and the
highest nitrogen rate (279 kg/ha).
