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Maize (Zea mays) is a second main crop after rice. Manipulation of cultural practices of maize by regulation of plant population and establisment of ferlizer requirement could increase production and‘farmer income. So, to reach that, it needs innovation of technology, i.e. technology of plant population setting via legowo system and technology of fertilization. Innovation of technology can only be reached by assessment The objective of the assement was to produce inovation of technology on plant population setting via legowo system and technology fertilization on mayze. The activity will be conducted on farm field, colaboration with farmer, field extentionist, and technician. The reseach was designed based on factorial design in RBD consisting of 2 factors. The first factor was planting method with two treatments and the’ second factor was fertilization based on nutrient status of soil with five treatments of based PUTK (The Dry Soil Test Kit), in three replications. Interaction between legowo planting method (100-40) with population of 71 428 plant/ha x20 cm tan / ha with fertilization based PUTK 75% (75kg SP36 ha−1 + 75 kg KCl ha−1) with Urea fertilizer 400 kg / ha could increase productivity by 36.4% with a value of B / C 2.93 and MBCR 6.31. It showed that the technology was economically feasible to be recommended, adopted and used in Gowa district, South Sulawesi.

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