A field experiment was carried out to investigate the effects of different nitrogen levels on interspecific competition between wild mustard and spring wheat. The experiment was laid out in randomized complete block design under a split plot arrangement, with three replications. The experiment comprised of three nitrogen levels (90, 150 and 210 kg ha -1 ) assigned to main plots and four wild mustard densities such as 0, 5, 10 and 15 plants m

The treatment of municipal wastewater becomes effective by using microalgae which are superior as the wide range of toxic and other wastes can be reduced with them. The present work is aimed to examine the efficiency of locally available blue green algae such as Oscillatoria limosa and Nostoc commune in removal of various nutrients to prevent further deterioration of water quality. The phycoremediation experiments were conducted

Field experiment was conducted to evaluate nitrogen use efficiency, nitrogen and chlorophyll content of wheat in response to changes in weed density and nitrogen application. The statistical analysis of data indicated that the content of nitrogen and chlorophyll of wheat flag leaf significantly increased by increasing nitrogen level, however the nitrogen use efficiency decreased. The nitrogen use efficiency at 210 kg N ha -1 was 22.74 kg/kg lower than 90 kg N ha -1 . Interspecific competition of wild mustard and wild oat significantly decreased the nitrogen use efficiency, nitrogen and chlorophyll content. The density of 15 plants of wild mustard and 75 plants of wild oat decreased the NUE of wheat by 28.2 and 27.3 % as compared to their zero density respectively.