Abstract: Field experiment was conducted to evaluate difference among various
levels of Nitrogen (N) fertilizer, its application techniques and their interaction
on the growth, yield components and yield of wheat. Treatments of N fertilizer
application techniques, viz., broadcast and side-dressing were allocated to
main-plots and nitrogen levels, viz., 60, 90, 120, 150, 180 and 210 kg N/ha
were placed in sub-plots. This experiment was repeated for two years with the
same treatments. Results revealed that nitrogen application techniques had non-significant
impact on most of the crop parameters except count of fertile tillers. Various
rates of nitrogen showed significant influence on all the parameters under study
and showed significantly higher grain yield of wheat with successive increase
of dose up to 180 kg N/ha. Maximum plant height and biological yield were obtained
under the highest nitrogen level, viz., 210 kg N/ha. However, the highest count
of fertile tillers, spike length, number of grains, 1000-grain weight and harvest
index were recorded in the treatment receiving 180 kg N/ha. Interactions between
fertilizer application techniques and nitrogen levels were non-significant for
all the crop parameters studied in this experiment on wheat. |