The experiment was conducted consisting of three different sources of organic materials (plant bokashi: PB; soaked outershell coconut: SOC; and arbuscular mycorhiza: AM) using four treatments and four rates of organic materials including control. Maize was grown in mixed soil-organic materials in the polybags and observed at 14, 28, 42 and 72 days after planting (DAP). The results showed that the application of PB, AM and SOC significantly increased growth and yield of maize. Increasing the effects depend on the type of source and rate of organic material additions. PB had the greater effects than AM and SOC. The use of PB at 150 g polybag1 improved 53% plant height, 131% plant diameter and 92% leaf number at 14 DAP; and increased 47% cob length, 43% cob diameter and 78% of cob weight at 72 DAP. The application of organic materials improved organic C, total N, P- and K-availables. This experiment demonstrated that PB produced higher nutrients than AM and SOC. Thus, PB which originated from bokashi of 1:1 weight ratio of leaves of ‘gamal’ (Gliricidia sepium) and ‘komba-komba’ (Eupatorium odoratum) could be used as organic fertilizer for growth and yield of maize in an acid soil.