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Synergistic enriched compost with biochar and fly ash for improving Ultisols in tropical acid soils Shintarika, Feni; Agusta, Herdhata; Santosa, Edi; Limin, Atfritedy; Angkat, Abdul Roni; Kurniati, Kurniati
Journal of Degraded and Mining Lands Management Vol. 13 No. 2 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.132.9987

Abstract

Ultisols are characterized by low pH, low alkaline saturation, low cation exchange capacity, and high levels of soluble Al and Fe. Compost is usually applied to increase soil fertility, but its effect is only temporary in tropical conditions because organic matter decomposes quickly. Biochar and fly ash-enriched compost have been proposed as a synergistic approach to improve the chemical properties of Ultisols. This study evaluated the effect of compost enriched with biochar and fly ash on soil chemical dynamics over 16 months in pineapple plantations in Lampung, using a randomized block design with three treatments: compost enriched at the initial stage, compost alone as a control, and compost enriched at the end of composting. The results showed that biochar and fly ash increased soil pH during the initial phase by supplying alkaline cations. Fluctuations occurred during the intermediate stage due to the decomposition of organic matter and nitrogen transformation: organic C and total N increase, influenced by microbial activity and environmental conditions. Phosphorus followed a mineralization-immobilization-remobilization pattern, with late-stage enrichment producing P. Potassium, calcium, and magnesium initially increased but later decreased, likely due to leaching. Early-stage enrichment provided a more stable release of alkaline cations. Fe, Mn, Cu, and Zn show fluctuations in the enriched treatment. The application of biochar and fly ash-enriched compost synergistically with early-stage enrichment effectively enhances the chemical properties of Ultisol.
Systems dynamic modeling on sustainable apples agriculture Samudra, Ferdianto Budi; Sitorus, Santun RP; Santosa, Edi; Machfud, Machfud
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 11 No 4 (2021): Journal of Natural Resources and Environmental Management
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.11.4.567-577

Abstract

History shows the long process of apple plants originating from subtropical regions adapting to Indonesia's tropical climate until its popularity is increasingly marginalized and replaced with other commodities, as evidenced by the decreasing land area, especially in Batu City. Indonesia. In developing and analyzing solutions based on the principles of sustainable development, an integrated and holistic approach is required. To understand problems and find solutions, we can use Systems dynamics. The purpose of this study is to obtain a policy scenario that encourages sustainable apple farming. Data is collected from the local government and BPS City or Province so that the selected variables follow the specific location. The system approach is used to identify needs, problem formulation, preparation of input-output diagrams, cause-effect diagrams and stock-flow diagrams. A series of scenarios is created and tested through simulation to understand the system's dynamic behavior better and obtain the desired output. The best scenario was chosen, namely by replanting 10% of old plant each year, using integrated agriculture with 3 female and 1 male brooders, reduction of land change with 50% success, Local economic development by integrating tourist ticket and hotels with 0,75 kg apple fruits also increasing health support for students
Co-Authors , Hariyadi , Kholidi , Krisantini , Susilawati . SUBOWO Abdoellah, Soetanto Abdul Harris Burhan Abdul Roni Angkat Achmad Taufiq Ade Wachjar Ade Wahjar Aditama, Ravi Aditya Wira Tantra Adolf P. Lonto Adolf Pieter Lontoh, Adolf Pieter Agik Suprayogi Agus Buono Agus Sufyan AHMAD JUNAEDI Ahmad Zamzami Akmal, Ajmir Alghifari, Ahmad Fadli Almas Lathuf Assyura Amirah, Nurul Amriati, Besse Anas Dinnurrohman Susila Anas Dinurrohman Susila Anas Miftah Fauzi Andi Gunawan Andreas Kefi ANDRIA AGUSTA Ani Kurniawati Anung Wahyudi Arisa Noguchi, Arisa Arjuna, Rizka Tri Aryani, Nabila Syarfina Atang Sutandi Azwar, Rani Azkiyah Bambang S. Purwoko Bambang Sapta Purwoko Cahyaningrum, Laeli Dyah Tantri Candra Budiman Chairunnisak, Chairunnisak Chusyairi, Ahmad Daniel Happy Putra Darmawansyah Darmawansyah Deden Derajat Matra Delvi Maretta Desta Wirnas Dhika Prita Hapsari Diaguna, Ridwan Didy Sopandie DINY DINARTY, DINY Dulbari Dulbari, Dulbari Dwi Guntoro Dwi Sutari Laksono Efendi, Darda Eka Maulidiya, Sherly Eko Sulistyono Elly Kristiati Agustin, Elly Kristiati Elsanti, . Endah Retno Palupi Endang Gunawan Eny Widajati Fajar Delli Wihartiko Faqih Udin Fatah, Muhammad Fatawa, Muhammad Ihsan Fatkhunnisa, Ratu Febrianto, Miftakhur Rizki Hidayat Feni Shintarika Fifin Nashirotun Nisya Gani Tarigan, Abdul Gani Gatot Pramuhadi Gerson Hans Maure Ginanjar Pramudya Sakti Gunar Widiyanto, Gunar HAJRIAL ASWIDINNOOR Haniefan, Nafarain Agung Haq, Awfil Hariyadi Hariyadi, Hariyadi Herdhata Agusta Herman Wafom Tubur I Wayan Astika Imam Fauzi Fauzi Tanjung Imdad Julian Purwanto Ince Raden Intan Dewi Puspitasari Irfan Rabani Irfanda, Munandar Is Helianti Iswandi Anas Iswandi Anas Jaenudin Kartahadimaja Juang Gema Kartika Kailola, Joan Joulanda Grace Kanny, Putri Irene Karmanah, Karmanah Kazi Liaquat Hossain Ken Takahata, Ken Khamdanah, . Krisantini Kurniati Kurniati kuswanto, Lianah Lian, Chun Lan Limin, Atfritedy Luh Putu Ratna Sundari Lutfy Ditya Cahyanti, Lutfy Ditya M A Chozin Machfud Machfud MAGHFIRAH Marchella Putriantari Martina, Ajeng Aulia Martini Aji Maryarti Sari Maryati Sari Matra, Deden Drajat Md. Abdul Wadud Md. Abul Kashem Md. Shajahan Ali Memen Surahman Mochamad Hasjim Bintoro Mohamad Rahmad Suhartanto Mohammad Abdul Wadud Mohammad Iqbal Irfany Muhamad Zainul Fattah Muhammad Hasjim Bintoro Djoefrie Hasjim Bintoro Djoefrie Muhammad Raihan Ferdiansyah Muhammad Thamrin Munandar Irfanda Munif Ghulamahdi Nadia Dwi Kartika Nakano, Hajime Nani Yulianti Nareswari, Aptika Hana Prastiwi Ni Made Armini Wiendi Nina Ariesta Nindita, Anggi Nobuo Sugiyama Nobuo Sugiyama Nobuo Sugiyama Nurlela, Nurlela Nurul Hidayah NURUL HIDAYAH Nurul Khumaida Oktaviona, Winda Okti Syah Isyani Permatasari Paisey, Elda Kristiani Panca Dewi Manu Hara Karti Prathama, Mathias Pratiwi, Shafira Purwanto, Imdad Julian Purwono Purwono Purwono PUTRI, AYU DIAH PUTU LAKSMI Putriantari, Marcella Rafi Fauzan Rahman, Rahayu Safitri Rahmat Budiarto Rahmawati, Nur Fajri Rahmayanti, Fetty Dwi Ramadhani, Detri Ardi Ramadhani, Rezky Puryan Rd. Selvy Handayani Rianto, Dwi Fajar Rinaldi Sjahril, Rinaldi Riska sukmawati Ritonga, Arya Widura Rizka Tri Arjuna Roedhy Poerwanto Rofiq, Muhamad Abdul Rohman, Fadil Rosdiana, Siska Rosyad, Astyani Sadiyah, Siti Halimatus Samudra, Ferdianto Budi Sandra Arifin Aziz Santun R.P. Sitorus Saputro, Imron Gempur Sari, and Maryati Sembiring, Wildan Kahfi Shafira Pratiwi Sigit Pramono Sinaga, Falencia Siska Rosdiana Siti Halimah Siwi, Hayu Slamet Susanto Sobir Sobir SOEKISMAN TJITROSEMITO Sofyan Zaman Sri Nurdiati Sri Suryo Sukoraharjo Sri Wahjuni Stefano, Indra Mario SUBOWO GITOSUWONDO Sudoyo, Bobot Sufiatul Maryana Sugiyanta Sugiyanta Sulassih, . Sulistyono, dan Eko Supijatno Surono, . Suwandi, Syifa Damaianti Suwarto Suwarto Syaiful Anwar Tantra, Aditya Wira Thifany, Ariny Jihan Tjahja Muhandri Ulfha Junita Ulinnuha, Zulfa Utami Prawati Wijaya, Aldi Kamal Winarso D. Widodo Yaqin, Roelly Ainul Yoko Mine Yoko Mine Yoko Mine Yonny Koesmaryono Yunus, Ismadi