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Application of oil palm and cacao waste biochar to improve the chemical properties of an Ultisol of Langsa, Aceh Saputra, Iwan; Prijono, Sugeng; Soemarno, Soemarno; Suntari, Retno
Journal of Degraded and Mining Lands Management Vol. 12 No. 1 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.121.6637

Abstract

Ultisols, including those of Langsa, Aceh, are known to have low fertility due to low pH, low available nutrients, low base saturation, high pH and exchangeable Al, and low cation exchange capacity. These problems can be alleviated by applying organic amendments to the soil. One of the soil amendments is biochar. This study aimed to elucidate the potential of oil palm and cacao waste biochar for improving the chemical properties of an Ultisol of Langsa, Aceh. Biochars generated from oil palm kernel shell (PKS), oil palm empty fruit bunch (PEFB), and cacao pod husk (CPH) were applied to the soil and incubated in the laboratory for 16 weeks. At 4, 8, 12, and 16 weeks after incubation, the changes in soil chemical properties were measured. The results showed that applying different types of biochar significantly improved the chemical properties of the Ultisol of Langsa. Specifically, PEFB biochar caused significant increases in soil pH (H2O and KCl), total phosphorus, available phosphorus, organic C, and cation exchange capacity. These increases became more pronounced with longer incubation times. In addition, using PEFB biochar resulted in the lowest levels of exchangeable Al and Fe in the soil. These levels decreased further with longer incubation times. In general, PEFB biochar produced at a pyrolysis temperature of 450oC for 4 hours is the most effective biochar for improving the chemical properties of the Ultisol of Langsa.
Analysis of Soil Penetration Resistance in Coffee Plantation Agroecosystems in Bangelan, Malang, East Java Riyanto, Saniya Reizta; Hanuf, Atiqah Aulia; Alista, Febri Ayu; Yumna, Alifa; Soemarno, Soemarno
PLANTA TROPIKA Vol 10, No 2 (2022)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v10i2.11085

Abstract

Agriculture land shows soil compaction problems due to long-term agricultural cultivation activities. Soil compaction indicator can be seen from the value of soil penetration resistance at different soil depths (0 - 60 cm). This research aimed to determine soil penetration resistance at different coffee plantation ages with different soil depths and to analyze the relationship between soil penetration resistance with soil physical characteristics and coffee productivity. The survey activities include observation of minipits, measuring soil penetration resistance at soil depths of 0-20 cm, 20-40 cm, and 40-60 cm using a hand penetrometer, and soil sampling. The results showed that the soil penetration resistance at each LU and soil depth suggested variation were categorized into moderate and high soil penetration resistance classes (1.34 MPa - 3.35 MPa). Soil characteristics, such as soil aggregate stability, water content, bulk density, porosity, silt content, and clay content, significantly correlate with soil penetration resistance. However, soil penetration resistance has a negative correlation with coffee productivity. The value of soil penetration resistance (at a depth of 0-60 cm) has a significant negative correlation with the average productivity of coffee plantations (r=-0.5936**). Therefore, increased soil penetration resistance decreased root growth, decreasing plant productivity.
Unveiling the Dynamic Between Land Conversion and Food Security of Farmers Households in Bakalan Village, Pasuruan Regency Novianty, Puput Cindy; Soemarno, Soemarno; Efani, Anthon; Bushron, Raushanfikr
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 21, No 3 (2024): November 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v21i3.907-916

Abstract

System Dynamics serves as an approach to unravel behavioral patterns by exploring fundamental structures. In this study, the dynamic system was crafted using STELLA software. The research methodology involved conducting primary surveys with both farmers and conversion farmers' households to gather essential data on their perspectives, practices, and circumstances related to land conversion and food security. Through this data, the System Dynamic model was constructed to depict the interplay among key variables impacting food security, specifically focusing on Food Availability, Affordability, and Needs. The analysis revealed that the Food Affordability indicator consistently played a pivotal role in shaping these trends over the analyzed years. However, a significant discrepancy in food security levels emerged between farming and non-farming households. This divergence primarily stemmed from income inequalities within the agricultural sector, affecting the purchasing power for essential foods like rice across the village. Additionally, a concerning trend of diminishing agricultural land and a subsequent decline in food availability was observed.
Analysis of Soil Penetration Resistance in Coffee Plantation Agroecosystems in Bangelan, Malang, East Java Riyanto, Saniya Reizta; Hanuf, Atiqah Aulia; Alista, Febri Ayu; Yumna, Alifa; Soemarno, Soemarno
PLANTA TROPIKA Vol. 10 No. 2 (2022)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v10i2.11085

Abstract

Agriculture land shows soil compaction problems due to long-term agricultural cultivation activities. Soil compaction indicator can be seen from the value of soil penetration resistance at different soil depths (0 - 60 cm). This research aimed to determine soil penetration resistance at different coffee plantation ages with different soil depths and to analyze the relationship between soil penetration resistance with soil physical characteristics and coffee productivity. The survey activities include observation of minipits, measuring soil penetration resistance at soil depths of 0-20 cm, 20-40 cm, and 40-60 cm using a hand penetrometer, and soil sampling. The results showed that the soil penetration resistance at each LU and soil depth suggested variation were categorized into moderate and high soil penetration resistance classes (1.34 MPa - 3.35 MPa). Soil characteristics, such as soil aggregate stability, water content, bulk density, porosity, silt content, and clay content, significantly correlate with soil penetration resistance. However, soil penetration resistance has a negative correlation with coffee productivity. The value of soil penetration resistance (at a depth of 0-60 cm) has a significant negative correlation with the average productivity of coffee plantations (r=-0.5936**). Therefore, increased soil penetration resistance decreased root growth, decreasing plant productivity.
Estimating Carbondioxide Emission and Mitigation Strategies from Land Use and Land Cover Change in Banyuwangi Wahyuni, Nurlita Indah; Soemarno, Soemarno; Hasyim, Abdul Wahid
Jurnal Pembangunan dan Alam Lestari Vol. 16 No. 1 (2025): Jurnal Pembangunan dan Alam Lestari
Publisher : Postgraduate School of Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpal.2025.016.01.02

Abstract

The land use and land cover change phenomenon has brought social and economic benefits such as agricultural land expansion, which increases food production for a rapidly growing population. On the other hand, it has also been reported to impact terrestrial ecosystem change and its service, including climate change control. The study aimed to estimate CO2 emission from land use and land cover change in Banyuwangi during 1995–2019 and formulate mitigation options to reduce CO2 emission. Four satellite images from 1995, 2000, 2014, and 2019 were used to classify land use and cover and then investigate the changes. This study applies a historical-based approach to estimate emissions to project future emissions using REDD Abacus SP software. There are 12 land use and land cover based on supervised classification: primary forest, secondary forest, plantation forest, mangrove forest, plantation, settlement, cropland, paddy field, shrubs, water, fishpond, and barren land. The land use and land cover change during the period 1995 to 2019 increased both CO2 emissions and sequestration. From 1995 to 2019, land use and land cover change in Banyuwangi emitted 1,5 million tons of CO2-eq/yr and sequestered 0,5 million tons of CO2-eq/yr. Under Business as Usual (BAU) or without mitigation effort, the emission will decrease to 1,2 million tons CO2-eq/yr in 2030. The implementation of the Regional Spatial Plan (RSP) prepared by the Banyuwangi Regency Government is projected to reduce emissions by 47.59% of net emissions from emission without mitigation. If the RSP scenario is added with efforts to prevent deforestation, net emissions can be reduced by 89.21%. Implementing Banyuwangi RSP can become best practice mitigation because it prioritizes the balance of protected areas and cultivation and maintains economic growth. Keywords: banyuwangi, carbon dioxide, emission, land cover, land use, mitigation
PERAN STAKEHOLDER DALAM PENGELOLAAN KAWASAN KONSERVASI MANGROVE DAN KEPITING (KKMK) KOTA TARAKAN Yulma, Yulma; Kustanti, Asihing; Soemarno, Soemarno; Mahmudi, Mohammad
Jurnal Perikanan Unram Vol 15 No 3 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i3.1536

Abstract

Mangrove ecosystem management in the Mangrove and Crab Conservation Area (KKMK) requires active collaboration from various stakeholders to achieve ecological and socio-economic sustainability. The research objective is to identify and explain the role of each stakeholder in the sustainability of KKMK management. The method used in this research is descriptive quantitative by collecting data and information through observation, interviews, and documentation. The results showed that there are 15 parties involved in the management of KKMK, and the role of each stakeholder is divided into four quadrants, namely the subject quadrant occupied by community groups consisting of Baya Damo Laid (BDL), fish fishermen, and crab fishermen, the key players quadrant occupied by the City Government, DPRKKP, DLH, PUPR, BPN, and Polres, the context setter quadrant occupied by Pertamina, PLN, and BPKIM, and the crowd quadrant occupied by Tarakan Tengah Village, KPH, and DKP.
Analisis pemanfaatan buah mangrove Rhizophora mucronata dalam mendukung wisata mangrove masyarakat Kampung Mandar Kabupaten Banyuwangi Fattah, Mochammad; Hakim, Luchman; Soemarno, Soemarno; Purwanti, Pudji
Jurnal Sumberdaya Akuatik Indopasifik Vol 9 No 2 (2025): Mei
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2025.Vol.9.No.2.518

Abstract

The use of mangrove fruit to create economic benefit for the community is anticipated to bolster conservation efforts for the mangrove environment. In Mandar Banyuwangi Village, one application of mangrove fruit is its conversion into flour. This study aimed to examine the proximate composition of Rhizophora mucronata mangrove flour and evaluate the profitability of processing this flour into pastries. The analysis conducted encompasses the proximate content test (including protein, fat, water, ash, and carbs) and a profit analysis that factors in the cost of goods sold (COGS). Mangrove flour manufactured by Poklahsar “Mina UPA Karya” is derived from the fruit of Rhizophora mucronata. The processing method necessitated seven days to manufacture mangrove flour. The proximate composition of mangrove flour, as per SNI criteria, includes water and carbohydrate content, although protein, fat, and ash content are marginally over or below SNI specifications.  Mangrove flour is utilized in a variety of desserts, including nastar, kastengel, cookies, almond chocolate, roses, jam sumprit, chocolate sumprit, peanut cake, and krispi brownies. Products made using processed mangrove flour in pastries yield a profit margin of 9.16% of the cost of goods sold (COGS). The R/C, BEPs, BEPq, profit, and profitability ratio of the mangrove flour processing business indicate profitability, since they go over the minimum requirements of profitability criteria.
Application of Goat Manure and Agriculture Lime in Biopori Infiltration Holes (BIH) on Soil CEC, Soil Exchangeable-K and Fresh Coffee Cherry Yield Ifadah, Nisfi Fariatul; Ramadhani, Muhammad Hibatullah; Alfathin, Syifa Chairani; Soemarno, Soemarno
Journal of Coffee and Sustainability Vol. 2 No. 1 (2025)
Publisher : Directorate of Research and Community Services

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jcs.2025.02.01.01

Abstract

Coffee plants (Coffea sp.) are a plantation commodity that is widely cultivated in Malang Regency, East Java. This plant has high economic value and is a source of income for coffee farmers. The productivity of smallholder coffee plantations smallholder's in Malang Regency, East Java, is experiencing a downward trend, including smallholder coffee plantations in the Wajak sub-district. This is related to the condition of the sandy soil at the coffee plantation location, this sandy soil usually experiences drought in the long dry season, is sensitive to erosion and leaching of nutrients, and has a low level of soil fertility. The use of manure and lime in biopore infiltration holes (BIH) is considered to be a solution to overcome soil fertility problems in coffee plantations in Wajak Sub-District, Malang Regency. Field experiments were carried out to analyze the effects of manure and lime in BIH on soil chemical properties (Soil CEC and Exch-K) and coffee cherry yield. The experimental treatments are PO (Control), BK (Empty BIH: Biopore Infiltration Hole), KK (BIH + Goat manure 10 ton. ha-1), KP (BIH + Agriculture-lime 4.9 ton. ha-1), KKP (BIH + Goat manure 10 ton. ha-1 + Ag-lime 4.9 ton. ha-1). Each of these treatments is replicated five times in a Randomized Block Design (RBD).  Results of this research show that the combination of 10 tons. ha-1 of goat manure and 4.9 tons. ha-1 of agricultural lime added into the BIH increases the cation exchange capacity (soil CEC) by 22% and the soil exch-K content by 49.23% compared to the control treatment, and it increase coffee cherry yield significantly.
Effect of hydroseeding media materials on soil stability from landslide sites Zairina, Anisa; Soemarno, Soemarno; Rachmansyah, Arief; Yanuwiadi, Bagyo; Leksono, Amin Setyo
Journal of Degraded and Mining Lands Management Vol. 12 No. 5 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.125.8635

Abstract

Landslides can cause soil and land quality degradation. Soil originating from landslide sites has less stable aggregates because it is nutrient-poor. This study aimed to evaluate the effect of hydroseeding media materials on soil stability after landslides. This study was conducted in two landslide areas in Pujon District, Malang Regency (112.417958 E, 7.867472 S) and toll road KM 78 Purwodadi, Pasuruhan Regency (112.726777 E, 7.804978 S), East Java. Soil analysis was carried out with parameters including soil physical characteristics data (bulk density, specific gravity, water content, porosity, texture and permeability) and soil chemical characteristics (organic matter, organic C, N, P, K, pH, CEC, exchangeable K, Na, Ca, Mg, total N and C/N ratio). The application of hydroseeding media was carried out with a combination of the following media: mulch (M), blotong (B), and fertilizer (cow manure; F). The results showed that the two-material formula generally had soil aggregates that were more resistant to water droplets. Soil aggregates with the MB formula treatment had the best aggregate stability compared to ten hydroseeding formulas with other material combinations.
Power imbalances and socio-demographic barriers in robusta coffee value chain: Insights from Malang Regency, Indonesia Hadi, Yuswono; Soemarno, Soemarno; Dania, Wike Agustin Prima; Astuti, Retno
Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) Vol 8, No 3 (2025)
Publisher : Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.afssaae.2025.008.03.6

Abstract

This study investigated power imbalances and inefficiencies in the Robusta coffee value chain in Malang Regency, Indonesia, employing an integration of the Structure-Conduct-Performance (SCP) framework and Value Chain Analysis (VCA). As the world’s fourth-largest coffee producer, Indonesia’s sector relied on smallholder farmers, who constituted 98% of producers but faced systemic marginalization. Drawing on survey data from 2,122 smallholder farmers and interviews with 26 traders, the analysis revealed a highly concentrated market structure, with four local collectors controlling 58% of trade and a single exporter dominating 68% of production. Farmers, despite generating 89% of value-added, retained only 50% of the consumer price due to exploitative intermediaries and informal pricing. Socio-demographic challenges, such as an aging workforce (92.5% over 45 years) and gender disparities (8.33% female participation), further hindered innovation and equity. The SCP-VCA integration uniquely exposed how market concentration enabled intermediaries to externalize costs, capturing 45.7% of the consumer price as profit, while farmers bore disproportionate labor. Policy implications emphasized digital transparency tools, farmer cooperatives, and certification subsidies to rebalance power dynamics. Demographic reforms, including youth engagement programs and gender-inclusive governance, were critical to addressing structural vulnerabilities.
Co-Authors Abdul Latief Abadi Abdul Wahid Hasyim Achmad Wicaksono Adara, Erza Aulia Aditya Nugraha Putra, Aditya Nugraha Aditya, Haidar Fari Ahadi, Muhammad Yanuar AHS Salendu, AHS Al Fanshuri, Buyung Alfathin, Syifa Chairani Ali Sulaiman Alista, Febri Ayu Amin Leksono Amin Setyo Leksono Andri Sanityoso Aniek Masrevaniah Anisa Zairina Anthon Efani Apriliani , Adini Ardhila Ayu Prasetyowati Arief Rachmansyah Asihing Kustanti Asnawi Asnawi Atikah Atikah Atikawati, Dini Aulia Hanuf, Atiqah B Polii, B Bagyo Yanuwiadi Bambang Rahadi Bayyinatul Muchtaromah BS, Sumitro Burhamtoro Burhamtoro, Burhamtoro Bushron, Raushanfikr Cahyo Prayogo, Cahyo Chatarina Umbul Wahyuni Chosa Zahro Fatiha Dewa Gede Raka Wiadnya Diana Arfiati Dimas Prabowo Harliando Dinna Hadi Sholikah Edrial Evi Veronica FX Pridady Galisong, Ridwan Danuarta Gumelar, Galif H. M. Sjaifoellah Noer Hadi, Deby Wahyuning Hadi, Syamsu Ridzal Indra Halim, Lusiani Ferelia Hanuf, Atiqah Aulia Ieke Wulan Ayu Ifadah, Nisfi Fariatul Irene Lestari Irsan Hasan Istika Nita Jamaluddin, Jamhuri Laurentius Lesmana Lily Agustina Luchman Hakim Luqman Qurata Aini Lutfi, M. Wasilul M. Bisri MA, Widodo Magfoedin, Moefid Maheno Sri Widodo, Maheno Sri Marsoedi Marsoedi Maryunani Maryunani, Maryunani Mimit Primyastanto Mochammad Fattah, Mochammad Mochammad Munir Mochtar Lutfi Rayes Mohammad Mahmudi Muklisin, Ajral Muktiyanto, Didik Naufal, Raihan Nopriani, Leny Sri Novi Arfarita Novianty, Puput Cindy Nuddin Harahab Nurdianto, Roby Nurlita Indah Wahyuni, Nurlita Indah Nurul Akbar Parmawati, Rita Prasetya, Novandi Rizky Pudji Purwanti Putra, Indra Purnama Ramadhani, Muhammad Hibatullah Regina R. Butarbutar Retno Astuti Retno Suntari Rida Iswati Rino Alvani Gani Riyanto, Saniya Reizta Rony Irawanto Rudin, Sofyan Sudirman Sahri Muhammad Sandra Dhesitta Putri, Sandra Dhesitta Sanita Suriani Saputra, Iwan Setyo Widagdo Sigit Wicaksono, Kurniawan Siska Irhamnawati Pulogu Siti Mechram Sjaifoellah Noer Sri Rahayu Utami Sri Sudaryanti, Sri Sudarto Sudarto Sugeng Prijono Sugeng Priyono Suharjono Sukmajati, Rahmanda Muhammad Sumedi Sumarsono Supriyanto Supriyanto Sutiman B. Sumitro Unggul B. Husodo Usman Usman Ustiatik, Reni Veryl Hasan Wike Agustin Prima Dania Yanuhar, Uun Yogi Sugito Yulianto, Alfian Tri Yulma, Yulma Yumna, Alifa Yuni Agung Nugroho Yunita, Dinda Mahartian Yuswono Hadi Zaenal Kusuma