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All Journal Agroista: Jurnal Agroteknologi
Amir Noviyanto
Program Studi Agroteknologi, Fakultas Pertanian, INSTIPER Yogyakarta
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Potensi dan Distribusi Limbah Biomassa Pertanian sebagai Penghasil Bioenergi di Kabupaten Gunungkidul Betti Yuniasih; Listiyani; Githa Noviana; Amir Noviyanto
AGROISTA : Jurnal Agroteknologi Vol. 10 No. 1 (2026): MEI
Publisher : Program Studi Agroteknologi INSTIPER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/agi.v10i1.2523

Abstract

Agricultural waste has the potential to serve as an environmentally friendly source of bioenergy. This study aims to determine the potential of agricultural waste as a bioenergy source, assess the amount of bioenergy that can be generated, and identify the distribution of this energy potential within Gunungkidul Regency. This study utilizes agricultural commodity production data from the Gunungkidul Regency Agriculture Office. Biomass waste estimates were calculated using the RPR (residue-to-product ratio). Estimates of the energy produced were calculated by multiplying the estimated agricultural waste by the lower heating value (LHV) for each commodity. Data on waste utilization was collected through in-depth interviews with key figures at the Gunungkidul Regency Agriculture Office. The estimated energy values for each subdistrict were mapped using ArcGIS Pro and visualized as a color gradient. The study results indicate that the total estimated agricultural waste in Gunungkidul amounts to 1,808,807 tons per year. The primary crops contributing the highest volume of agricultural waste are cassava, corn, rice, and bananas. This agricultural waste has the potential to be processed into bioenergy in the form of bioethanol, biobriquettes, biochar, biotanol, or biogas. The districts with high-potential bioenergy from agricultural waste are Saptosari, Semin, and Ponjong, which are dominated by dryland farming of cassava, upland rice, and corn. The majority of areas in Gunungkidul Regency have moderate bioenergy potential. Agricultural waste in Gunungkidul Regency has the potential to be processed into bioenergy to foster energy self-sufficiency in each area of the regency.
Perubahan Sifat Kimia Tanah Entisols, Respons Agronomis, dan Produktivitas Padi setelah Lima Tahun Penerapan Sistem Organik dan Kimia di Wukirsari, Sleman, Yogyakarta Yovi Avianto; Amir Noviyanto; Galang Indra Jaya; Alan Handru
AGROISTA : Jurnal Agroteknologi Vol. 10 No. 1 (2026): MEI
Publisher : Program Studi Agroteknologi INSTIPER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/agi.v10i1.2519

Abstract

Sustaining rice production while reducing soil degradation has become an important challenge in intensively cultivated paddy fields, particularly on Entisols that are highly responsive to management practices. This study evaluated changes in the chemical properties of Entisols and their implications for rice agronomic performance after five years of organic and chemical management in Wukirsari, Sleman, Yogyakarta. Soil samples were collected from paddy fields under organic and chemical systems and analyzed for pH, C-organic, organic matter, cation exchange capacity (CEC), total N, available P, exchangeable K, Ca, Mg, and total B. Agronomic parameters and grain yield were also observed. The organic system gradually improved major soil chemical properties, particularly pH, C-organic, organic matter, available P, exchangeable Ca, and Mg. Relative change analysis showed that the strongest positive responses under organic management occurred in organic matter, available P, exchangeable K, Mg, and total B after five years. These improvements were followed by better root dry weight density, root length, and productive tiller number. Rice productivity under organic management increased from 5.2 t ha⁻¹ in the first year to 7.5 t ha⁻¹ in the fifth year, which was not significantly different from the chemical system (7.8 t ha⁻¹). These findings indicate that long-term organic management can progressively improve soil fertility and maintain rice productivity, implying that organic-based management is a promising strategy for sustaining paddy production while enhancing soil quality in Entisol-dominated agricultural areas.
Co-Authors Alan Handru Betti Yuniasih Galang Indra Jaya Githa Noviana Listiyani Yovi Avianto