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All Journal Jurnal Ilmu Pertanian Indonesia Indonesian Journal of Interdisciplinary Islamic Studies (IJIIS)
Khoiri, Imam
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Religion Agriculture, Biological Sciences & Forestry Humanities Economics, Econometrics & Finance Education Law, Crime, Criminology & Criminal Justice Social Sciences

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RETHINKING THE EPISTEMOLOGY OF ISLAMIC ECONOMY: ABBAS MIRAKHOR’S CONTRIBUTION TO THE CURRENT DEBATE Khoiri, Imam
Indonesian Journal of Interdisciplinary Islamic Studies (IJIIS) Vol. 2, No. 2, March 2019
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijiis.vol2.iss2.art2

Abstract

In the last three decades, Islamic economics and finance have experienced significant developments. At the same time, several problems arise, not only technical but also epistemological. On that basis, the author is interested in studying Abbas Mirakhor’s epistemological thought, in the hope of providing answers to these problems while providing direction for the next steps. As a qualitative study, the primary data source of this research is the work of Abbas Mirakhor. This study uses philosophical, sociological and historical approaches in addition to the literature review approach. The results of the study show that in the view of Abbas Mirakhor, the source of the formulation of the Islamic economic concept is the Qur’an, Sunnah, and Islamic jurisprudence. The reading of the Qur’an and Sunnah is done through the perspective of the NIE (New Institutional Economics). Through this approach, where Islam is placed as a rule-based system, the Islamic economic scaffolding formulation consists of rules about property, markets, distribution and redistribution, risk sharing, contracts, and trusts. Adherence to institutional scaffolding correlates with economic growth. This institutional scaffolding is supported by an incentive structure through the concept of barakah.
DRIS Analysis of Nutrient Balance for High–Yielding Oil Palm Plantations in Peatlands Khoiri, Imam; Radian, Radian; Abdurrahman, Tatang
Jurnal Ilmu Pertanian Indonesia Vol. 30 No. 4 (2025): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.30.4.754

Abstract

This study was conducted using an exploratory survey method to collect annual production data and analyze oil palm leaf samples from peatlands in several private oil palm plantations in West Kalimantan Province. The data obtained were analyzed using the Diagnosis Recommendation Integrated System (DRIS). The results showed that to achieve optimal production of 23.81–30.33 tons ha -1 year -1, the optimal nutrient ranges in the oil palm leaf tissue on peatland were N 2.20–3.03%; P 0.14–0.18%; K 0.52–1.03%; Mg 0.16–0.30%; Ca 0.31–0.65%; B 7.05–18.06 ppm; Zn 2.44–14.26 ppm; Cu 2.76–6.37 ppm; Mn 18.36–315.28 ppm; and Fe 38.90–92.40 ppm. The nutrient balance ratios in the oil palm leaves on peatland showed optimal ratios for N/P 14.72–19.11; N/K 1.88–5.42; N/Mg 8.25–15.75; N/Ca 3.89–7.77; K/P 3.51–6.46; Mg/P 1.08–1.85; Ca/P 1.94–4.24; K/Ca 1.07–2.31; K/Mg 2.33–4.63; Ca/Mg 1.54–2.69; B/N 2.70–7.05; B/Fe 47.16–116.26; B/K 11.93–32.65; B/Ca 18.73–34.48; and B/Mg 32.54–80.43. Oil palm plants cultivated on peatlands with high production groups (>25 tons ha -1 year -1) had average nutrient indices of N (-1.5), P (1.6), K (0.9), Ca (0.2), Mg (0.0), and B (-1.4), with nutrient requirements in the order of N > B > Mg > Ca > K > P. In contrast, plants in the low–production groups (<25 tons ha -1 year -1) had average nutrient indices of N (-8.3), P (-3.9), K (1.1), Ca (6.8), Mg (0.7), and B (2.9), with nutrient requirements in the order of N > P > Mg > K > B > Ca. Keywords: nutrient balance, oil palm, peatland
Co-Authors Radian Radian Tatang Abdurrahman, Tatang