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INDONESIA
Jurnal Pertanian Agros
Published by Universitas Janabadra
ISSN : 25273655     EISSN : 25798782     DOI : https://doi.org/10.37159/jpa.v27i2.61
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Melakukan evaluasi pengaruh pupuk kandang ayam dan NPKMg terhadap produktivitas tanaman aren. Sugar palm (Arenga pinnata Merr.) is a plantation commodity that is very beneficial ecologically and financially because it can adapt to various geographical conditions such as mountains, valleys, riverbanks, and undulating land. However, the development of this plant is still constrained by low cultivation intensification, unstructured planting patterns, and optimal land use, resulting in low productivity. Increasing the productivity of sugar palm plants can be achieved through intensive cultivation. The purpose of this study was to study how chicken manure and NPKMg fertilizer affect the growth of sugar palm plants and determine the best fertilizer dosage.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 83 Documents
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PENGARUH VARIASI KETEBALAN PLASTIK LOW DENSITY POLYETHYLENE (LDPE) DAN VARIASI SUHU RUANG SIMPAN DALAM PENANGANAN PASCAPANEN BUAH TOMAT Eusabius Paul Pega; Agnes Neli Panyongang; Susniwan; Heny M.C. Sine; Rosalia Silaban; Esra Frandika Karo-Karo
Jurnal Pertanian Agros Vol 28 No 4 (2026): EDISI OKTOBER
Publisher : Fakultas Pertanian Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v28i4.244

Abstract

Tomatoes are classified as climacteric fruits; therefore, they do not need to be harvested only when fully ripe on the plant. Harvesting them in an over-ripe state results in a shorter shelf life and rapid spoilage. This study aimed to determine the effects of varying Low-Density Polyethylene (LDPE) plastic thicknesses and storage temperatures—as well as their interaction—on the shelf life of tomatoes. A two-factor Factorial Completely Randomized Design was employed, involving variations in LDPE plastic thickness (30 µm, 40 µm, 50 µm) and storage temperature (15°C in a refrigerator, 10°C in a display cooler, and 5°C in a freezer), with three replications resulting in 27 experimental units. Parameters observed during storage included fruit diameter, total soluble solids, pH, and moisture content. The results indicated that variations in LDPE plastic thickness did not significantly affect fruit diameter, total soluble solids, or moisture content. Storage temperature significantly influenced tomato quality and shelf life; a temperature of 10°C (display cooler) yielded the best results for maintaining fruit quality, whereas 5°C posed a risk of chilling injury, and 15°C accelerated the respiration rate and quality deterioration. The combination of a 10°C storage temperature and 40 µm LDPE plastic thickness is recommended as the optimal treatment for extending shelf life and maintaining tomato quality.
PERBANDINGAN KETERSEDIAAN Fe-DTPA PADA TANAH SAWAH DENGAN RIWAYAT ROTASI TANAMAN BERBEDA DI LOMBOK BARAT Intan Lusiana Dewi; Rika Andriati Sukma Dewi; Isnaniar Rahmatul Azizah; Lulu' Ayu Faezatiy; Intan Permata Hadi
Jurnal Pertanian Agros Vol 28 No 4 (2026): EDISI OKTOBER
Publisher : Fakultas Pertanian Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v28i4.245

Abstract

Rice paddy soils undergo alternating wet and dry conditions that can alter redox processes and iron (Fe) availability. This study descriptively compared DTPA-extractable Fe (Fe-DTPA) in rice fields with different crop-rotation histories in West Lombok Regency. Sampling was conducted in June 2025 at three locations representing rice–rice–rice (PPP) in Labuapi, rice–rice–maize (PPJ) in Gerung, and rice–maize–maize (PJJ) in Lembar. At each location, soil was collected from five sampling points at depths of 0–20 and 20–40 cm. Samples from the five points were composited separately by depth, resulting in six composite samples. Each composite sample was analyzed three times in the laboratory; these were analytical replicates and not independent field replicates. Fe-DTPA was extracted using DTPA and measured by atomic absorption spectrophotometry (AAS). Descriptively, the highest Fe-DTPA concentrations occurred at the PPP site, with 10.10 mg kg⁻¹ at 0–20 cm and 9.09 mg kg⁻¹ at 20–40 cm. Values at the PPJ site were 6.39 and 2.84 mg kg⁻¹, respectively, while those at the PJJ site were 4.54 and 1.93 mg kg⁻¹. Fe-DTPA decreased with depth by approximately 57.5% at PJJ, 55.6% at PPJ, and 10.0% at PPP. The PPP site also had the lowest KCl pH. These patterns describe differences among three locations with different rotation histories; because each history was represented by only one location, the observations do not establish a causal effect of crop rotation. Further studies should include independent field replicates for each rotation history.
KEDAULATAN BENIH DAN ETIKA PENGETAHUAN: MENGKRITISI GLOBAL FORUM ON FARMERS' RIGHTS DALAM PERSPEKTIF KEADILAN EPISTEMIK Untoro Hariadi
Jurnal Pertanian Agros Vol 28 No 4 (2026): EDISI OKTOBER
Publisher : Fakultas Pertanian Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v28i4.249

Abstract

ABSTRACT On 12 September 2026, BRICS leaders signed the New Delhi Declaration, which proposes a Global Forum on Farmers' Rights in Seed Systems to safeguard farmers' rights over seeds and to document traditional agricultural and seed knowledge. Documenting knowledge, however, is never neutral: it presupposes who may speak, which knowledge counts as legitimate, and who controls what has been documented. This conceptual review combines a critical close reading of the Declaration with the framework of epistemic justice, drawing on recent literature (2022–2026) on farmers' rights, the international seed regime, and genetic data governance, together with the Indonesian legal context. The analysis shows that a non-binding, state-based documentation forum risks repeating an old pattern in which farmers become data sources rather than knowledge partners. This risk is amplified by the weak legal force of farmers' rights, the shift to digital sequence information, and the criminalization of farmer-breeders in Indonesia. The article proposes a framework of "substantive recognition" with four ethical prerequisites: farmers as negotiating subjects, free, prior and informed consent, collective ownership of documentation results, and benefit sharing that reaches communities. Participatory and ethnographic research is recommended to test the framework.

Page 9 of 9 | Total Record : 83

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