A research experiment was conducted during 20 I 1 at College Research Farm of the College of Post Graduate Studies, Central Agriculture University, Barapani,Meghalaya. The experiment was undertaken to evaluate the effects of fertility levels on different method of planting on potato (solanum tuberosum) intercropped with maize (Zea mays) on its yield, yield advantage, competitive performance and their economics. Significantly higher growth, yield attributes and finally yield of potato and maize obtained in sole cropping system in ridge and furrow and paired ridge row method, respectively. The LER (1.47) and AHER (0.73) values were greater for the potato + maize in 1: 1 ratio in the systems, there was an advantage of intercropping for exploiting the resources of the environment. The highest value of LEC (0.47), ATER (1.19), RCC (9.84) and MAl (60578.29) were obtained in I: I potato + maize intercropping in the system. However the aggressivity of potato + maize were highest in 2:2 potato + maize intercropping. All the partial value such as LER, LEC, AHER and intercropping advantage were greater for potato than for maize in l: I ratio of intercropping, whereas the corresponding values for maize were lower in mixtures with potato. The intercropping competiti~e parameters like aggressivity were higher in the intercropping with the 2:2 ratios. These findings indicate that potato was more competitive partner than maize as maize was affected more in mixtures with 2:2 ratios. Residual fertility status of soil was significantly higher in 1:1 ratio with paired ridge row method of planting. However, all the yield advantage and competitive parameters decrease with increase in fertility level of the planting method but the yield loss of both the crops were compensated by the inter crops. Highest economic and intercropping advantage parameters (B:C ratio, LER, LEC) were observed in I: 1 ratio with ridge and furrow methods. The results indicate that potato + maize intercropping in 1:1 ratio on ridge and furrow method provide highest net profit over the other intercropping ratio indifferent planting method.