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Challenge in the expansion of maize and soybean planting areas is the limited agrcultural labor from land processing activities, planting to post-harvest. Considering that the corn and soybean cultivation systems are still traditionally done using both human and livestock power so that the productivity and work efficiency produced is still low. This affects to the area of land that can be cultivated, land productivity and the production of corn produced. To support the program to expand the planting area and increase the crop index to increase corn production, it is necessary to support the use of appropriate mechanization technology and in accordance with site-specific conditions. Therefore it is necessary to introduce agricultural machinery to support the corn cultivation system to increase productivity, work efficiency, increase yields and improve the quality of results. In this activity the implementation and development of mechanization technology for corn and soybean cultivation is appropriate and in accordance with site-specific conditions at the demonstration plot scale in the corn and soybean production centers by taking into account the technical, economic, and socio-economic conditions of the local community. Indonesian Center for Agricultural Engineering Research and Development has developed a rotary and planting machine that can do soil treatment and planting seeds at once. This machine is equipped with solid fertilizer application. But in practice farmers rarely use liquid fertilizer for corn / soybean cultivation. Test results of tillage and planting of corn seeds: Work depth of 12.1 cm; spacing in rows 38.5 cm; spacing in rows of 70 cm; number of seeds per fall 2.2 items; percentage of empty holes 4.1%; work width is an average of 162.88 cm; average working speed of 2.31 km / h; average work capacity of 4.08 hours / ha; fuel consumption of 20.32 lt / ha