A field experiment was conducted during winter season of 2014-15 to study the effect of NPK, biofertilizers and plant spacings on growth and yield of African marigold (Tagetes erecta L.). The economics of maximum B: C ratio (6.00) was recorded with combined application of 100 % RDF of NPK + Azotobacter + PSB + 60 x 45 spacing cm and maximum net returns (Rs. 283267 ha^-1) was recorded with same combination of treatments. This treatment was significantly superior over other treatment combinations except 100% RDF of NPK + 60 x 45 cm (Rs. 262726 ha^-1) which was found at par.