The experiment was laid out in split plot design and replicated thrice at Agricultural College and Research Institute, Madurai during Rabi 2009-2010. The main plot treatment consisted of mulching with crop residue and no mulch as control. Foliar spray of micronutrient mixture, NAA at 40 ppm, salicylic acid at 100 ppm, brassinolide at 0.1 ppm, triacontanol at 500 ppm and no spray were assigned to sub plot. Among the main plot treatments, mulching with crop residue effectively controlled the weed density of grasses, sedges and broad leaved weeds which increased the yield attributes. The eonomic parameters, viz. gross return, net return, and benefit cost ratio were higher in mulching. The subplot treatment foliar spray of NAA at 40 ppm reduced the weed density significantly, which also enhanced the yield and yield attributes despite recording more economic returns. When  both the main and subplot treatments combined together, they gave better control of sedges  at 40 and 60 DAS and grasses at 60 DAS due to shade effect of robust stature of plants. This treatment combination resulted in substantial increase in yield and yield attributes and also more economic returns.