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All Journal Jurnal Penelitian Kelapa Sawit
Erwin Nyak Akoeb
Indonesian Oil Palm Research Institute
Agriculture, Biological Sciences & Forestry

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ANALISIS FINANSIAL DAN EKONOMI TANAMAN SELA JAGUNG DAN KEDELAI PADA TANAMAN KELAPA SAWIT BELUM MENGHASILKAN Muhammad Akmal Agustira; Ilham Lubis; Eka Listia; Erwin Nyak Akoeb; Iman Yani Harahap; M. Edwin S. Lubis
Jurnal Penelitian Kelapa Sawit Vol 26 No 3 (2018): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1856.63 KB) | DOI: 10.22302/iopri.jur.jpks.v26i3.60

Abstract

Maize and soybean can be planted for intercropping on immature oil palm, however its financial and economycal aspects have not been widely studied. This study was aimed to analyze the financial and economic aspects of intercropping of maize and soybean on immature oil palm, level of land use efficiency, and comparison of efficiency between monolculture and intercropping system. The study located in Sorolangun Experimental Station, District of Sorolangun, Jambi. Methods used in the study were farming business analysis, Revenue Cost Ratio (RCR), Return on Investments (ROI), Land Equivalent Ratio (LER), and Land Equivalent Optimize Ratio (LOER). The results showed that maize had a profit level of Rp 9,676,564/ha/growing season, RCR 1.76; ROI 188.28% (three growing seasons per year), while soybean had a profit level of Rp 4,059,352/ha/growing season, RCR 1.51 and ROI 75.22% (three growing seasons per year). Based on these results, intercropping of maize and soybean on immature oil palm are economically and financially feasible. For the land use efficiency, corn LER value for corn and soybean was 0.95 and 0.85, respectively, showing that yield of maize and soybean from intercropping system (effective land area of ​​7,200 m2 per ha of oil palm area) was 95% and 85% when compared to monoculture system. The LOER value of corn and soybeans per ha was 1.32 and 1.18, respectively, which showed that corn and soybeans growing on intercropping system with immature oil palm were more efficient than monoculture system at the same size of land. Based on those comparative analysis of economic values, financial, and land use efficiency, corn was a better alternative crop for intercorpping on immature oil palm than soybean.
Kesuburan Tanah, Pertumbuhan dan Produktivitas Tanaman Kelapa Sawit (Elaeis guineensis) pada Tiga Kedalaman Mineral Pirit Edy Sigit Sutarta; Dhimas Wiratmoko; Erwin Nyak Akoeb
Jurnal Penelitian Kelapa Sawit Vol 28 No 2 (2020): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iopri.jur.jpks.v28i2.104

Abstract

Acid sulfidic land is one of the marginal land that has been used for oil palm development. Low soil acidity (pH) and high content of Al and Fe are limiting factors for oil palm development in this area. Oil palm yield in this area was very limited and could not reach the standard of oil palm productivity in mineral soils. The objectives of this study were mapping the pyritic depth distribution, and observing the soil fertility on three pyritic depth (40 – 60 cm, 60 - 90 cm, and >90 cm). The results of this study showed that Paya Rambe plantation had varied pyritic depths, between 40-110 cm. The shallow pyritic depth was found along the river to the sea estuary. Shallow pyritic depth soil has lower soil fertility than the deeper one. Soil with shallow pyritic layer has high acidity, Fe, S, and Al contents, also contain low macro nutrients (N, P, K, and Mg) availability. Furthermore, shallow pyritic depth reduced the oil palm growth, nutrients uptake and oil palm productivity.
Co-Authors Dhimas Wiratmoko Edy Sigit Sutarta Eka Listia Ilham Lubis Iman Yani Harahap M. Edwin S. Lubis Muhammad Akmal Agustira