Nitrogen level with herbicidal combination on growth and yield attributes in wheat crop

Abstract

An experiment was conducted at agronomy research farm on silty loam soil, having pH 8.6, EC 0.36 dSm-1, organic carbon 0.31%, available N, P and K 178.0, 14.5 and 231.5 kg ha-1, respectively. Experiment consisted of 9 treatment combinations together three levels of nitrogen viz. 80, 120 and 160 kg N ha-1 and three herbicide treatments viz. pendimethalin fb 2, 4-D (1 + 0.5 kg a.i. ha-1),clodinafop + metsulfuron (0.06 + 0.004 kg a.i. ha-1) and sulfosulfuron (0.025 kg a.i. ha-1) result reveal that All the herbicides applied as post-emergence, except pendimethalin. All the growth and yield contributing characters viz. plant height,, Leaf Area Index, number of effective shoots, spike length, number of grain spike-1 as well as test weight of grain were significantly higher in 160 kg N ha-1 and clodinafop + metsulfuron (0.06 + 0.004 kg ha-1). With respect to economics 160 kg N ha-1 combined with clodinafop + metsulfuron (0.06 + 0.004 kg ha-1).