Article Per Year (5 Year)
p-Index From 2021 - 2026
3.215
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 BETA (Biosistem dan Teknik Pertanian) Jurnal Ilmiah Rekayasa Pertanian dan Biosistem AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Journal of Agricultural and Biosystem Engineering Research Jurnal Ilmiah Teknologi Pertanian Agrotechno
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 Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

Published : 56 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search
Journal : Agrotekno

 1 
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.
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