Article Per Year (5 Year)
p-Index From 2020 - 2025
4.145
P-Index
This Author published in this journals
All Journal Jurnal Hortikultura Indonesia (JHI) Forum Pasca Sarjana Jurnal Teknik Industri Agrotekno Buletin Udayana Mengabdi JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Jurnal BETA (Biosistem dan Teknik Pertanian) Jurnal Ilmiah Teknologi Pertanian Agrotechno Jurnal Ilmiah Rekayasa Pertanian dan Biosistem AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Journal of Agricultural and Biosystem Engineering Research
Yohanes Setiyo
Program Studi Teknik Pertanian, Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

Published : 60 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 60 Documents
Search

 1   2   3   4   5 
KAJIAN TINGKAT PENCEMARAN UDARA OLEH GAS NH3 DAN H2S PADA PROSES PENGOMPOSAN SECARA AEROB Setiyo, Yohanes
Agrotekno Vol. 13, No. 1 Februari 2007
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (179.08 KB)

Abstract

This  research  objective  was  to  know the  level  polutan  of NH3and  H2S  from  aerobic  composting  process.  Modified  Briski method  was  use  to  identification NH3 and   H2S.  Pada  metode Briski  et al. (2003)  tidak  ada  pengukuran  gas  NH3 and  H2S. Both  polutan  were  colect  at  solvent  BaCL2 and  H2SO4 0.1  N along  one  week,  than  the  level  of    concentration  at  air  were identificated by chromatography method. The level concentration of NH3 at the air was 0.092 ppm to 0.25 ppm, and the level polutan of H2S to the air  was 0.3 ppm to 1.1 ppm. Both polutan were below from standard of SNI.
PERUBAHAN SIFAT FISIK SAMPAH ORGANIK PADAT PADA PROSES PENGOMPOSAN SECARA OPEN WINDROW Setiyo, Yohanes
Agrotekno Vol. 15, No. 1 Februari 2009
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (99.183 KB)

Abstract

This research was done with aim to identify physicalproperties changes during composting process of organicmunicipal solid waste. Bulk density, moisture content,particle size, and porosity of produced compost wereobserved every one week at three point depth of compostingprocess. Oxygen concentration at the critical point wasobserved for checking the diffusion potential of air. Thisobservation was done everyday by using Cosmotector typeXPO-318.Relation equation between bulk density, porosity andmoisture content with time of composting product weredescribed by ? = -0.0966t2 + 9.23t + 147.8 with the value ofR2 = 0.95, ? = -0.0292ln(t) + 0.745 with value of R2 = 0.944,and Mc = -0.0785ln(t) + 0.8685 with r2 = 0.95. Processshould be futher supported with a turning over of thecompost which done weekly so the availability of O2 atamount of 50 to 190 g/kg air.
PERUBAHAN SIFAT FISIK SAMPAH ORGANIK PADAT PADA PROSES PENGOMPOSAN SECARA OPEN WINDROW DI BIOREAKTOR TIPE SETENGAH SILINDER Setiyo, Yohanes
Agrotekno Vol 13, No.2 Agustus 2007
Publisher : Universitas Udayana

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

Abstract

This research was to identification physical properties change along organic municipal solid waste composting. Bulk density, moisture content, particle size of compost, and porosity were observed every one week at three point deep of composting process. Oxygen concentration at the critical point was observed for cheking the diffusion potential of air, observation of it was everyday by cosmotector tipe XPO-317. Relation equation between bulk density, porosity and moisture content with time of composting were described by ? = -0.0966 t2 + 9.23 t + 147.8 with value of was r2 = 0.95, ? = - 0.0292Ln(t) + 0.745 with value of was r2 = 0.944, and Mc = - 0.0785Ln(t) + 0.8685 with value of was r2 = 0.95. Process should be futher supported with a turning over of the compost done weekly so the availability of O2 at 50 to 190 g kg-1 air.
APLIKASI KOMPOS SEBAGAI PUPUK ORGANIK UNTUK MENINGKATKAN KANDUNGAN FENOL PADA TANAMAN JAHE MERAH Setiyo, Yohanes; Tika, I Wayan; -, Sumiyati; Suhendra, Lutfi
Agrotekno Vol. 15, No. 2 Agustus 2009
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (49.266 KB)

Abstract

This research was aimed to optimize the production ofvolatile oil and oleoresin of red ginger crops by optimizingthe usage of compost as fertilizer. Compost was applied as anorganic fertilizer to red ginger crops in poly-bag withfertilization doses 0, 0.2, 0.4, 0.6, 0.8, and 1 kg for one kgcrops planting and red ginger was harvested at 8 and 9months after planting.Red ginger contained volatile oil of 3.8-3.97% DM, totalphenol of 5.7 - 6.4% DM, and ability to catch free radical ofDPPH compound of phenol of 2.5 - 2.6% DM. The quality ofthe red ginger was measured at the age of between 8 and 9months. Depended upon its volatile oil content, ability tocatch free radical DPPH compound of phenol, and its contenton phenol, hence harvest time of ginger could be minimizedto 8 months.
SIMULASI PENGENDALIAN SUHU DI RUMAH TANAMAN JAMUR TROPIKA Setiyo, Yohanes
Agrotekno Vol. 14, No. 1 Februari 2008
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (674.475 KB)

Abstract

A green house that roofed by using transparent materials such as glasses, fiberglass, plastic, etc. could provide an optimum growth environment for plants such as mushrooms. However, green house effect during the day leads to a higher temperature inside the green house in comparison to the outside temperature. In order to provide an optimal environment for growing mushrooms in a green house, it is required a temperature machine control which is able to bring the room temperatures between 160C to 210C. The dynamic of room temperature can be predicted by using a mathematical model simulation. A stimulation model developed by using Matlab program could be implemented in a temperature control machine in order to bring the room temperature between 160C, 190C and 210C. Research results showed that it took 16.8 minutes, 26.4 minutes, and 30 minutes to bring the room temperature down to 160C, 190C and 210C respectively. When the room temperature reaching the target temperature, the room temperature were varying within 0.010C.
Optimalisasi Proses Bioremediasi Secara In Situ Pada Lahan Tercemar Pestisida Kelompok Mankozeb Yohanes, Setiyo; Utama, Made S; Tika, Wayan; Gunadnya, IBP.
Jurnal Teknik Industri Vol 12, No 1 (2011): Februari
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (565.411 KB) | DOI: 10.22219/JTIUMM.Vol12.No1.51-56

Abstract

Compost as an organic fertilizer could improve the physical, chemical, and biological characteristics of the soil in a certain way so that soil mineral was available for plant. The special aim of this research was to optimize the bioremediation process for degradation of pesticide residues at Bedugul Agro-tourism so that organic farming system will be sustainable. Based on C/N, and pH, it could be concluded that better solution for bioremediation of pesticide residue problem was by giving mixed-compost in horticulture cultivation. Deviation of pH in bioremediation process was 0.22, and pH in-situ bioremediation process was between 6.9 and 7.12 or neutral pH. In this condition micro-organism would be effective in degrading pesticide residue. Bioremediation process on pesticide residue of Ditane M-45 at horticulture cultivation deploy with 1.2 g/l/20 m2, 2.4 g/l/20 m2, and 3.6 g/l/20 m2 spraying dosages took place perfectly, which was showed by parameters on development of micro-organism population and the amount of pesticide residues. Pesticide residue of each spraying dosages was 0.25–1.7% at 35 days or this values were under 0.003 ppm.
Kajian Atmosfir Terkendali untuk Memperlambat Penurunan Mutu Buah Mangga Arumanis selama Penyimpanan I Made Suphartha Utama; Yohanes Setiyo; Ida Ayu Rina Puja; Nyoman Semadi
Jurnal Hortikultura Indonesia Vol. 2 No. 1 (2011): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.729 KB) | DOI: 10.29244/jhi.2.1.27-33

Abstract

Arumanis Mango (Mangifera indica L. cv Arumanis) which is one of Indonesia’s tropical fruits having a high potency to be developed as an export commodity. Limited volumes of the fruit have been exported using air cargo and attempts in using sea freights with reefer containers for long distance market had not given convincing result. Therefore, efforts in optimizing the use of a reefer container are essential. Investigations, were performed in order to decelerate the deterioration fruits which involved different combined concentrations of O2 and CO2 gases during storage of Arumanis mango at cold (12+1.5oC) and room (28+2oC) temperatures. Four different combined gases of O2 and CO2, namely 5% O2 and 5 % CO2; 5% O2 and 10% CO2; 10% O2 and 5% CO2; and 10% O2 and 10% CO2 were surged surrounding the fruits stored at the cold and room temperatures. Fruits without treatments with the combined gases were prepared as kontrols. The investigation indicated that the cold temperature of storage was still the best way to slowing down the deterioration of the fruit. There were no significant different effects on the rate of deterioration among the fruits treated with the different combined concentrations of O2 and CO2. The controlled atmospheres, however, were better for storing the fruits compared to those stored without controlled atmosphere.Key words: controlled atmosphere, Arumanis, mango
Municipal solid waste or MSW has potency to be decomposed by microorganisms and trasformed into compost.  The waste contains 60%-75% of organic materials C, H, O, and N.  The aim of this research was to develop a simulation model based on mathematical equations describing the phenomenon of the  composting.  The population of  microorganisms , the rate of  O2 consumption , the rate of CO2 production , the rate of H2O production, the rate of carbon nitrogen ratio or C/N, and temperature were the v Yohanes Setiyo; Hadi K. Purwadaria; Arief Sabdo Yuwono; M. Ahkam Subroto
Forum Pasca Sarjana Vol. 30 No. 1 (2007): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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

Abstract

Municipal solid waste or MSW has potency to be decomposed by microorganisms and trasformed into compost.  The waste contains 60%-75% of organic materials C, H, O, and N.  The aim of this research was to develop a simulation model based on mathematical equations describing the phenomenon of the  composting.  The population of  microorganisms , the rate of  O2 consumption , the rate of CO2 production , the rate of H2O production, the rate of carbon nitrogen ratio or C/N, and temperature were the variables tested in this research.  Validation was carried out by comparing datum of simulation model with datum of composting.  Simulation model was declared valid if the values of each parameter were  r2 > 0.75, the  total value of Err was closed  to zero, and the distribution of Err was independent to time.  The sensitivity test was analyzed by comparing the value changes of variable tied with the value changes of free variable.  Correction from the simulation model in predicting the microorganism population, CO2, O2, and temperature  could be  expressed  respectively  as  y’ = 1.06(y-1.003),  y’ = 1.07(y+ 0.07), y’ = 1.02(y+ 0.05), and y’ = 1.02(y - 1.05).  The temperature, the C/N and the rate of  O2 consumption were sensitive to the changes of microorganism population and the radius of the bioreactor.   Key words: composting, organic materials, simulation, bioreactor
Optimalisasi Proses Bioremediasi Secara In Situ Pada Lahan Tercemar Pestisida Kelompok Mankozeb Setiyo Yohanes; Made S Utama; Wayan Tika; IBP. Gunadnya
Jurnal Teknik Industri Vol. 12 No. 1 (2011): Februari
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/JTIUMM.Vol12.No1.51-56

Abstract

Compost as an organic fertilizer could improve the physical, chemical, and biological characteristics of the soil in a certain way so that soil mineral was available for plant. The special aim of this research was to optimize the bioremediation process for degradation of pesticide residues at Bedugul Agro-tourism so that organic farming system will be sustainable. Based on C/N, and pH, it could be concluded that better solution for bioremediation of pesticide residue problem was by giving mixed-compost in horticulture cultivation. Deviation of pH in bioremediation process was 0.22, and pH in-situ bioremediation process was between 6.9 and 7.12 or neutral pH. In this condition micro-organism would be effective in degrading pesticide residue. Bioremediation process on pesticide residue of Ditane M-45 at horticulture cultivation deploy with 1.2 g/l/20 m2, 2.4 g/l/20 m2, and 3.6 g/l/20 m2 spraying dosages took place perfectly, which was showed by parameters on development of micro-organism population and the amount of pesticide residues. Pesticide residue of each spraying dosages was 0.25–1.7% at 35 days or this values were under 0.003 ppm.
PELATIHAN PEMANFAATAN POWER THRESHER DAN MANAJEMEN USAHA BAGI KELOMPOK USAHA PANEN PADI PEMULA DI SUBAK DESA KABUPATEN GIANYAR I K. Satriawan; Yohanes Setiyo; I. A. Mahatma Tuningrat
Buletin Udayana Mengabdi Vol 9 No 2 (2010): Volume 9 No.2 – September 2010
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (142.128 KB)

Abstract

Policy of product increase of national rice requires the development of adequate post harvest handling to improve efficiency, decreasing of losing crop, improving rendemen, added value, and competitiveness. This was done in order to improve earnings and prosperity of farmer in is the rural areas. Efforts to improve side of offfarm paddy especially its postharvest nowadays become attention to be handled seriously.Activity of this training aims at: (1) forming paddy crop group as development of business unit; ( 2) empowering of beginner paddy crop group so that they can apply postharvest technology and manage its agribusiness well; ( 3) training farmers to apply power thresher to minimize losing paddy crop. Participant target in this activity is group member of Subak Desa of Gianyar Regency.The result of this community services activity are as follows ( 1) Socialization of postharvest paddy have improved the understanding of beginner group member of paddy harvest so that they can contribute in lessening the lose paddy crop; ( 2) Forming crop group as the institution for empowering member of subak for developing of business unit; and ( 3) Applied training of power thresher can improve skillful harvest group members to minimize the lose of paddy crop in threshing.
Co-Authors Ali Husyain Sakti Arief Sabdo Yuwono Dandy Zulfikar Sulthan Siata Desak Agung Hepi Dewa Bagus Putu Prabha Diptaya Gede Jaya Kusuma Putra Guna, Kadek Mahendra Adhi Gusti Bagus Eka Chandra Hadi K. Purwadaria Handayani Nofiyanti, Sri Henggar Jaya, Gigieh I B Werdi Putra I Dewa Gde Mayun Permana I Gusti Ayu Lani Triani I Gusti Ketut Arya Arthawan I Gusti Ketut Arya Arthawan I Gusti Ngurah Apriadi Aviantara I K. Satriawan I Kadek Ari Andika I Made Andi Purnama Wijaya I Made Anom Sutrisna Wijaya I Made Dwijantara Putra I Made Merta I Made Mudiarta I Made Nada I Made Nanda Suastika I Made Sudana I Made Suphartha Utama I NYOMAN RAI I Nyoman Semadi I Nyoman Sucipta I Putu Gde Suhartana I Putu Gede Budisanjaya I Putu Surya Wirawan I Putu Tantra Ardika I Wayan Arsa I Wayan Budiarta I Wayan Edy Wirawan I Wayan Krispedana I Wayan Satrio Wiantara I Wayan Sugiana I Wayan Tika I Wayan Tika I Wayan Widia I Wayan Widia I WAYAN WIRAATMAJA I. A. G. Bintang Madrini Ida Ayu Inten Dwi Sulatri Ida Ayu Mahatma Tuningrat Ida Ayu Rina Pratiwi Pudja Ida Ayu Rina Pratiwi Pudja Ida Ayu Rina Puja Ida Bagus Putu Gunadnya Ida Bagus Wayan Gunam Jarinsen Yanardo Purba Kadek Mila Adiani KETUT BUDI SUSRUSA Komang Sri Diah Nirmala Dewi Komang Suteja Pramana Lutfi Suhendra M Ikram M. Ahkam Subroto Made Arya Bhaskara Putra MADE MERTA Made Pila Putra Made S Utama Merisa - Aritonang Muhdan Syarovy Muna, Mukhes Sri Ni luh Devi Widyanti Ni Luh Putu Sarasulistian Ni Luh Trimayanti Ni Luh Yulianti Ni Made Eva Yulia Dewi Ni Nyoman Sulastri Ni Putu Ayu Prya Chandani Ni Putu Yuliasih Ni Putu Yuliasih Ni Wayan Diana Sepriani NYOMAN SEMADI ANTARA Putu Citra Dewi Rina Pratiwi Pudja I. A Ronni Agriva Sembiring roy zulkarnaen Sebastiao Massa Sukma Elvayani, I Gusti Ayu Evi Sumiyati - Sumiyati - Sumiyati Sumiyati Sumiyati Sumiyati Sumiyati Utama, Made S Wayan Tika Yosika, Nur Ida Winni Yudha Kristyanto Leksono Zainul Arifin