I. INTRODUCTIONIn Indonesia, maize is an important commodity crops, but production levels have not been optimal. PT. Natural Nusantara working to increase maize production in quantity, quality and environmentally friendly / sustainable (aspect of K-3).
II. GROWTH CONDITIONSIdeal rainfall of about 85-200 mm / month and should be evenly distributed. In the phase of flowering and grain filling needs to get enough water. Should be planted early or late rainy season. Need sun, shade plants, growth is inhibited and seed yield is not optimal. The optimum temperature between 230 C - 300 C. Corn does not require any special soil requirements, but the loose soil, humus rich soil will produce optimal. soil pH between 5.6 to 7.5. Good aeration and water availability, slope of land less than 8%. Areas with slopes of more than 8%, should be performed before core formation. Altitudes between 1000-1800 m above sea level with optimum height between 50-600 m asl







