Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Jurnal BETA (Biosistem dan Teknik Pertanian) Jurnal Ilmiah Teknologi Pertanian Agrotechno
Yohanes Setiyo
Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Unjuk Kinerja Sistem Aerasi Dalam Kotak Penyimpanan Kentang (Solanum tuberrosum L) Tipe Kotak Dandy Zulfikar Sulthan Siata; Yohanes Setiyo; I Gusti Ketut Arya Arthawan
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol. 7 No. 1 (2022): April
Publisher : Fakultas Teknologi Pertanian, Universitas Udayana Gedung GA, Fakultas Teknologi Pertanian, Universitas Udayana Jl. Raya Bukit Jimbaran, Jimbaran, Kuta Selatan, Bali Telp/Fax: (0361) 701801

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v01.i01.p01

Abstract

The purpose of this study was to determine the performance of the box type potato storage aeration system in terms of changes in temperature and RH of the air during storage. Research on a box type aeration system for potato storage was carried out by measuring the temperature and RH of the incoming air, the temperature and the RH of the outgoing air during storage of potatoes for 21 days. In addition, calculating the heat of respiration, heat to increase the temperature of potatoes, heat to evaporate water and heat lost to the environment using a simple mathematical model approach. The results showed that the temperature and RH of the room and the incoming air flow tended to form a linear pattern, while the RH of the process room and the outgoing air flow tended to form a polynomial pattern. The temperature of the potato storage room was in the range of 24.07-25.70oC and the RH was in the range of 56.0-65.6%. The heat value of respiration varied between 261.42 - 311.88 k.Joule/kg potato tubers, because the storage temperature was 24.07-25.70oC. The heat generated by the respiration process used to evaporate water from the potato tubers to the environment is 6.01±0.3% on average, the average heat to raise the temperature of the potato tubers and the air temperature around the potato is 24.08±1, 3%, and the average heat loss to the environment with the flowing air is 59.89±3.4%.
Organic Fertilizer Granulator for Urban Farming: High Efficiency and Simple I Made Mickey Yogi Ajna Karuna; Yohanes Setiyo; I Putu Surya Wirawan; Radi
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 14 No 2 (2026): INPRESS
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Solid organic fertilizers derived from livestock manure are rich in macro- and micro-nutrients essential for plant growth and soil health. Despite their nutritional value, commercially available powders pose challenges in handling, storage, and uniform field application, leading to inefficiencies in nutrient delivery and increased labor costs. To address this, developing a dedicated granulation machine is crucial for transforming powders into durable, easy-to-apply granules. The primary objective of this research was to design, construct, and evaluate a laboratory-scale granulation machine that processes solid organic fertilizer into granules compliant with SNI 7763:2024 standards, particularly targeting optimal granule sizes of 2-5 mm for enhanced usability. The machine incorporates a rotating granulation tube where centrifugal force of granulator’s unit is 31.31 N, moment of inertia of granulator’s unit is 1.27 kg.m2, and friction 3.71 N with the granulator unit, and rotational energy bind the material. Performance testing focused on working capacity (kg/h) and operational efficiency (%), varied by granulation tube speed and input mass of a 1:1 solid organic fertilizer-tapioca mixture. Key parameters included rotational speeds influencing granule formation dynamics. Results demonstrated capacities of  kg/h at higher speeds,  kg/h at medium, and  kg/h at lower, with peak efficiency of 98.76 ± 0.3% and ideal 2-4.75 mm granules at 22.66 RPM. These outcomes confirm the machine's reliability .In conclusion, the prototype excels at producing SNI 7763:2024-compliant granules with excellent success rates. Recommended operation at  RPM optimizes output for practical agricultural use, paving the way for scalable organic fertilizer production.
Co-Authors Dandy Zulfikar Sulthan Siata I Gusti Ketut Arya Arthawan I Made Mickey Yogi Ajna Karuna I Putu Surya Wirawan Radi