Variability of Maize Productivity on Kambisols in Mamuju Regency West Sulawesi, Indonesia Marthen P. Sirappa1+), Muhtar1+), Religius Heryanto2+), Ketut Indrayana1+), Nurdiah Husnah2++), Iven Patu Sirappa3++)
1) Researcher of West Sulawesi Assessment Institute for Agricultural Technology
2) Extention of West Sulawesi Assessment Institute for Agricultural Technology
Complex of West Sulawesi Province Government Office
H. Abdul Malik Pattana Endeng Street, Mamuju 91512, West Sulawesi, Indonesia
3) Lecturer of Science and technology Faculty of the UNKRISWINA Sumba, East Nusa Tenggara
R. Soeprapto Street, No. 35 Prailiu, Waingapu Sumba Timur, Indonesia
+ Main Contributor- ++ Member Contributor
Abstract
The research was done in Guliling Village, Kalukku Distrct, Mamuju Regency on area 3 ha in 2020. This research was conducted through desk study and field research. The soil type at the study site belongs to the association of Kambisols. The innovation of technology integrated crop management, including the use of superior seed quality, namely Nasa 29, JH 37 and JH 45, planting system with a double row with a spacing of (100 - 40 cm) x 20 cm (1 plant/hole), balanced use of fertilizer with rate 250 kg Urea and 300 kg NPK Phonska/ha. Based on land suitability map of ICALRD, land suitability for maize classified to marginal suitability (S3) by a limiting factor are nutrient retention (nr), nutrient availability (na), water availability (wa), and rooting media (rc). The land area of marginal suitability (S3) for maize of 46,778 ha, consisting of S3-nr/na/wa of 5,582 ha, S3-rc/wa of 3,463 ha, and S3-wa of 37,733 ha. Result of filed reseach show that the average of maize productivity with application of technological innovation, such us superior seed quality, plant spacing with double row planting system, and balanced fertilization can reach 9.43 t/ha, higher than the average yield of maize in West Sulawesi and Mamuju Regency. To increase of maize productivity in West Sulawesi, it is recommended to overcame of limiting factor and application technology integrated crop management of maize, especially the use of superior seed quality, plant spacing with double row planting system, and balanced use of fertilizer.
