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Siti Suharyatun
Jurusan Teknik Pertanian Fakultas Pertanian, Universitas Lampung, Jl. Sumantri Brojonegoro 1, Bandar Lampung 35145
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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Pengaruh Kecepatan Putar dan Jumlah Masukan Batang Singkong Terhadap Kinerja Mesin Rabakong Tipe TEP-6 Asmara, Sandi; Kuncoro, Sapto; Suharyatun, Siti; Juliantoro, Rizky Alif
Jurnal Agricultural Biosystem Engineering Vol 2, No 3 (2023): September 2023
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v2i3.8056

Abstract

Cassava production not only produces tubers, but also produces waste, one of which is cassava stems. So far, the waste of cassava stems has not been widely used by farmers, so that after the cassava is harvested, the cassava stems are just left lying on the ground. This study aims to reduce cassava stem waste through size reduction using a cassava stem chopper (Rabakong) with variations in engine speed per minute (RPM).This research was carried out at the Agricultural Equipment and Machinery Power Laboratory, Department of Agricultural Engineering, Faculty of Agriculture, University of Lampung in May - June 2023. The treatment used 3 variations of RPM namely 800, 1000, and 1400 where each used 3 different amounts of input, and each RPM was repeated 3 times. The number of inputs used is the input of 3 sticks, 4 sticks, and 5 sticks. The results showed that chopping using the RPM setting of 1400 and the input amount of 4 cassava sticks had the best working capacity with a value of 194.448 kg/hour. Lowest fuel consumption by using the RPM setting of 800 and the number of inputs of 3 sticks with a value of 1,073 liters/hour. Keywords:  Cassava Stems, Input, Rabakong, RPM.
Analisis Ekonomi Sistem Fertigasi Pada Budidaya Bawang Merah (Allium cepa L.) Novianti, Evita; Tusi, Ahmad; Amien, Elhamida Rezkia; Suharyatun, Siti
Jurnal Agricultural Biosystem Engineering Vol 3, No 1 (2024): March 2024
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v3i1.8819

Abstract

Shallot cultivation using the fertigation system is a method of providing fertilizer and irrigation water for shallot plants through a drip irrigation system, which is more efficient and effective, so as to increase productivity. However, farmers still do not know information regarding the implementation of the fertigation system on shallots and the benefits. The purpose of this study was to analyze the cost requirements of the fertigation system, the economic feasibility of the business, and the minimum area of shallot cultivation area for business farmers who use the fertigation system and do not apply the fertigation system in Nambahrejo Village, Kota Gajah District, Central Lampung. There are two types of data obtained, namely primary data obtained from direct survey methods or collecting questionnaire data and interviews with farmers, and secondary data from literature and the like. The research results show that the shallot fertigation system with a quarter ha land area is feasible with a total cost value of ±Rp. 134,044,026,-/year, the NPV value is Rp. 291,029,252/year, Net B/C of 1.25, IRR of 35%, and payback period (PP) of 0.58 years / ±7 months. Shallot cultivation is recommended to be carried out with a minimum area of ¼ ha with 3 planting periods per year.
Kajian Industri Arang Dari Kayu Akasia (Acacia mangium) Di Kecamatan Bumi Nabung Kabupaten Lampung Tengah Kinanti, Sekar; Haryanto, Agus; Kuncoro, Sapto; Suharyatun, Siti
Jurnal Agricultural Biosystem Engineering Vol 1, No 3 (2022): September 2022
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v1i3.6333

Abstract

One way to increase the energy and economic value of wood waste is to convert it into charcoal through the pyrolysis process. The purpose of this study was to determine the performance of the acacia wood charcoal industry and the characteristics of acacia wood charcoal. Data collection was carried out by observing the production process of acacia wood charcoal in Bumi Nabung District, Central Lampung Regency. Parameters included charcoal yield, processing capacity, charcoal characteristics (bulk density, moisture content, ash content, water absorption, and calorific value), and economic analysis of small-scale charcoal industry. The results showed that the production system still uses traditional methods, starting from the preparation of raw materials, preparation of raw materials, installation of boxes, adding soil to the boxes, burning, cooling and harvesting. Based on cooling method, charcoal production was grouped into two, namely natural and water spraying cooling. Sprayed charcoal has the characteristics of water content 5.1%, ash content 2.99%, bulk density 0.256 g/cm3 and calorific value 30.42 MJ/kg. While the characteristics of natural cooled charcoal were 2.52% moisture content, 1.78% ash content, 0.123 g/cm3 bulk density and calorific value 32.93 MJ/kg. The monthly profit obtained wass IDR656.918,64 for sprayed charcoal and IDR167.227,46 for natural charcoal. Keywords: Acacia, Charcoal, Cooling, Pyrolysis, Yield.
Analisis Ekonomi Alat Pengasap Ikan Tipe Drum Terhadap Pengasapan Ikan Lele (Clarias Sp.) Asmara, Sandi; Anhar, Satria Radly; Oktafri, Oktafri; Suharyatun, Siti
Jurnal Agricultural Biosystem Engineering Vol 3, No 4 (2024): Desember 2024
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v3i4.10168

Abstract

The purpose of this study is to determine the performance of drum-type fish smokers, determine the economic feasibility value and sensitivity level of drum-type fish smokers to indicators of changes in the number of working days, the price of catfish, and the selling price of smoked catfish. Based on the results of the research, the drum-type fish smoker is able to smoke 6.4 kg of catfish using 1.655 kg of coconut shell and 2.496 coconut fiber as fuel. Based on economic analysis, this tool is declared feasible to use with the BEP value obtained of 22.35/kg, NPV of Rp 72,213,896.97/year, B/C ratio of 1.35 and IRR of 898.25%. Based on the sensitivity analysis of the use of tools to changes in working days, there is no significant change in each change in working days but it is still feasible to run. Based on the sensitivity analysis of changes in the price of catfish, there is a significant change in every change in the price of catfish, where the lower the price of catfish, the more profit is obtained. While the sensitivity analysis on changes in the selling price of smoked catfish occurs a significant change, where the higher the selling price of smoked catfish, the higher the profit obtained from the use of drum-type fish smoking equipment. Keyword: BEP, B/C Ratio, Drum Type of Smoke Fish, IRR, NPV.
Analisis Kapasitas Tanah Menahan Air (Water Holding Capacity) pada Penambahan Biochar Berbahan Pelepah Kelapa Sawit (Elaeis guineensis Jacq) Akbar, Fahri Andrian; Suharyatun, Siti; Amien, Elhamida Rezkia; Tusi, Ahmad
Jurnal Agricultural Biosystem Engineering Vol 3, No 1 (2024): March 2024
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v3i1.8928

Abstract

The availability of water in the soil varies and is influenced by soil properties, especially those related to the soil's capacity to retain water. Water retention capacity is one of the primary functions of soil, playing a crucial role in maintaining moisture and distributing water to plants. This research aims to analyze the effects of dosage and particle size of oil palm frond biochar on soil infiltration and water retention capacity. The study employed a Completely Randomized Factorial Design (RALF), comprising two factors: the dosage of oil palm frond biochar (A) and the biochar particle size (B). The dosage factor consisted of three levels: 0% (A1), 0.6% (A2), and 1.2% (A3), while the biochar particle size factor consisted of three levels: < 0.5 mm (B1), 0.5 - 1 mm (B2), and 1 - 2 mm (B3). Each experimental unit was replicated three times, resulting in 27 experimental units. The study utilized soil with silt loam texture. The research parameters observed included soil water content at field capacity conditions (pF 2.54) and at permanent wilting point conditions (pF 4.2), changes in water content over time, mass density, particle density, porosity, water infiltration, and water retention capacity. The findings revealed that the addition of biochar to silt loam textured soil resulted in a reduction in infiltration rate, with the most significant reduction observed when applying biochar with a particle size < 0.5 mm (B1). Furthermore, providing biochar with a size of 0.5 – 1 mm at a dosage of 0.6% (B2A2) and a dosage of 1.2% (B2A3) had the effect of increasing the soil's water retention capacity. Keysword : Infiltration, Factorial Completely Randomized Design, Silt Loam, Soil Physical Properties.
Pemanfaatan Limbah Serbuk Gergaji Kayu Jati (Tectona grandis) Sebagai Bahan Campuran dalam Pembuatan Paving Block Porous Rosadi, Irfan; Rahmawati, Winda; Warji, Warji; Suharyatun, Siti
Jurnal Agricultural Biosystem Engineering Vol 2, No 2 (2023): June 2023
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v2i2.7468

Abstract

The growth of development that continues to increase in each region results in reduced water catchment areas, to overcome this it is necessary to create artificial recharge. Artificial infiltration aims to preserve groundwater as a source of life to be maintained, for reasons of beauty many building service users prefer paving blocks as an alternative to pavement covering the ground surface, installations that have gaps on the sides of the paving can transmit water by 30-50% . Paving block is a building material composed of portland cement, aggregate, water, with or without additives but does not reduce the quality of the paving itself. Porous paving blocks are paving blocks made from added materials in the form of biomass waste, one of which is teak wood sawdust. This research was conducted to make porous paving blocks with quality standard D, which are used for parks floor and other uses. The composition of the materials used were cement and sand (1:3), added with teak sawdust in the treatment of P1 as much as 2%, P2 as much as 4%, P3 as much as 6%, and P4 as much as 8% of the total weight of the material 2.5 kg. Based on (SNI 03-0691-1996), paving block sizes have a minimum thickness of 60 mm with a tolerance of ±8%. The porous paving block produced meets SNI standards with side lengths of 100 mm and thicknesses varying between 56 – 72 mm. Paving blocks with quality standard D have a minimum compressive strength value of 8.5 MPa and a maximum water absorption capacity of 10%. The results of this research shown the paving block P1 treatment has an average compressive strength value of 16.05 MPa with an average water absorption capacity of 6.89% which are in paving block type D quality standard range. Keywords: Leachate, Paving Block Porous, Teak Wood Sawdust, Waste.
Unjuk Kinerja Mesin Pemanen Padi (Combine Harvester) Yanmar AW70V di Lahan Sawah Kecamatan Seputih Mataram Kabupaten Lampung Tengah Asmara, Sandi; Kuncoro, Sapto; Suharyatun, Siti; Hermawan, Dedi
Jurnal Agricultural Biosystem Engineering Vol 3, No 4 (2024): Desember 2024
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v3i4.10173

Abstract

Combine Harvester Yanmar AW70V, is religion which helps the process of harvesting rice from cutting, channeling, threshing, separating the grain to cleaning the grain while walking in the field so as to shorten the harvesting time. The purpose of this study was to test the performance of the Yanmar AW70V Combine Harvester machine used for rice harvesters in Seputih Raman District Central Lampung Regency. This test includes actual work speed, field capacity and field efficiency as well as harvesting capacity, losses or loss values, and fuel consumption of the Yanmar AW70V Combine Harvester machine. This research method uses experimental methods in collecting data which is then analyzed and presented in tabular form and processed descriptively. The performance of the Yanmar AW70V Combine Harvester harvesting machine on the land produces an actual working speed of 1,19 m/s or 4,284 km/hour, theoretical field capacity 0,899 Ha/hour, effective field capacity 0,39 Ha / hour and field efficiency of 43%, losses or loss value of 282 kg or 6,9%, and fuel consumption of 19,8 liters/Ha. Keywords:  Machine Combine Harvester, Performance Test, Yanmar AW70V
Modifikasi Alat Perajang Batang Singkong (Rabakong Tipe Tep 5) untuk Meningkatkan Kapasitas Kerja Asmara, Sandi; Kuncoro, Sapto; Suharyatun, Siti; Setiawan, Firnando Anggi
Jurnal Agricultural Biosystem Engineering Vol 2, No 3 (2023): September 2023
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v2i3.8049

Abstract

Lampung Province is the largest producer of cassava in Indonesia. However, cassava production in Lampung has been declining over the past five years due to many farmers switching to other commodities due to the long harvesting period and unstable prices. This has resulted in a buildup of cassava stem waste, requiring innovation to manage this waste. Hence, the cassava stem chopper (Rabakong) was introduced. Rabakong has been developed by Agricultural Engineering (TEP) students from the University of Lampung, starting from TEP 1, TEP 2, TEP 3, TEP 4, and TEP 5. This research method involves modifying the frame of the previous version, redesigning the components to be modified using AutoCAD software, and then fabricating and collecting data after modification. The latest modified Rabakong machine underwent significant changes in the number of blades, which are fewer but arranged spirally for efficiency in chopping and space-saving. The working capacity has increased to 207 kg/hour at 1400 rpm. Waste material has decreased to 11.39%. Fuel consumption is 2.580 liters/hour. The percentage of finely chopped materials (<0.2 mm) is only 17.19%, while coarsely chopped materials (>0.5 cm) reach 51.41%, indicating that the latest version is more suitable for coarse results.. Keywords: Cassava Stems, Design, Efficiency, Modification. 
Pemanfaatan Limbah Plastik Polyethylene Terephthalate (PET) dan Batok Kelapa Sebagai Bahan Baku Paving Block Utama, Komang Muliandre; Warji, Warji; Rahmawati, Winda; Suharyatun, Siti
Jurnal Agricultural Biosystem Engineering Vol 2, No 2 (2023): June 2023
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v2i2.7480

Abstract

In 2021 the total amount of waste from various types of waste in Indonesia alone will reach 68,5 milion tons. Based on these data, as much as 17 percent, or around 11,6 milion tons, was contributed by jenna R.Jambeck from the University of Geogia in 2010, there were 275 tons of plastic waste produced worlwide. Around 4,8-12,7 milion tons of them are waste and pollute the sea. Indonesia itself has a coastal population of 187,2 ,milion which annually produces plastic waste. Around 0,48-1,29 milion tonnes of plastic waste is thought to have polluted the oceans. To overcome this, proper management of plastic waste is needed, one of which is by making paving blocks made from plastic waste. The study aims to determine the characteristics of thr various composition paving blocks according to the Dquality standard, which is used for garden pavements and other uses. In this study, aratio of 1:1:1 was used for plastic, sand, and oil. Then coconut shells were added to the treatment P1 as much as 3%, P2 as much as 6%, P3 as much as 9%, and P4 as much as 12% of the paving block volume paving block quality standardD has requirements, namely the maximum value obtained from the results of the compressive strength test is 10 Mpa and water absorption is 10%. From the result of the research that i did, it was found that the variations in the P treatment were closestto the quality standard D, with a compressive strength test value of 5,84 Mpa. Keywords : Coconut Shells, Paving Blocks, PET, Plastic, Waste.
Karakteristik Pellet dari Bagas Tebu Haryanto, Agus; Pratama, Yuko Armandho; Triyono, Sugeng; Suharyatun, Siti
Jurnal Agricultural Biosystem Engineering Vol 2, No 1 (2023): March 2023
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v2i1.6931

Abstract

Sugarcane bagasse is the remaining solid waste from sugarcane (Sacharum officinarum) milling which has the potential to be developed as solid fuel in the form of pellets. The purpose of this study was to determine the effect of variations in pressure and particle size on the characteristics of pellets from sugarcane bagasse. The research was carried out with a combination of variations in particle size (fine, medium, and coarse) and pressure (1, 2, and 3 tons). The results showed that sugarcane bagasse has the potential to be developed as a pellet fuel because it has a relatively high calorific value, an average of 16.53 MJ/kg. Sugarcane bagasse pellets meet SNI 8675-2018 standards in terms of moisture content, density, and ash content. The results showed that although the ash content of the pellets was affected by the particle size, in general, the characteristics of the pellets were not significantly affected by the treatment factors (pressure and particle size as well as their interactions). Sugarcane bagasse pellets have a high water absorption capacity, so they require a good storage method. Keywords: Densification, Density, Pressure, Particl Size, Strength
Co-Authors Abdilah, Rois Abdul Rozaq Adi Saputra Adipa, Rakha Aditya, Muhammad Alif Adnan Bahrul Ulum Agus Haryanto Agus Haryanto Agus Haryanto Agus Haryanto Agus Haryanto Agustin, Churia Camelia Ahmad Tusi Akbar, Fahri Andrian Aldi Saputra Anggraini, Nurvita Anhar, Satria Radly Annisa Nur Rachmawaty Aprilliandi, Reza Asropi Asropi Ayu Anggiana Bambang Purwantana Budianto Lanya Budianto Lanya Cicih Sugianti Darwin Darwin Dedi Hermawan Demato, Pingkan Najua Denny Sanjaya Irawan Diding Suhandy Dwi Dian Novita Eka Yana Elhamida Rezkia Amien Erlangga Erlangga Fadila, Nabila Dea Faizah, Intan Nurul Febryan K. Wisnu Febryan Kusuma Wisnu Ferdita Kurnia Firmansyah Ully Pratama Forky Indra Kano Indriyani, Yaktiworo Julianto Julianto Juliantoro, Rizky Alif JUNARLI JUNARLI Khoiril Anam Kinanti, Sekar Kuncoro, Sapto Kurnia, Berti Kusumiyati Lani, Lisa May M. Zen Kadir Mahesa, Khoirul Muhammad Dendi Mareli Telaumbanua Mareli Telaumbanua Muhamad Teguh Angga Saputra Muhammad Alwi Al Fayed Muhammad Amin Muhammad Dhafir Muhammad Pijar Muhjidin Mawardi Muhjidin Mawardi Muhjidin Mawardi Novianti, Evita Nurfauzan, M. Oktafri Oktafri Oktafri Oktafri, Oktafri Pelita Ningrum Pratama, Yuko Armandho Putri, Laily Rahmadani Rahmawati, W. Rala, M.Andrian Soni Ramadhanti, Annisa Suci Ridwan, Ridwan Rosadi, Irfan RR. Ella Evrita Hestiandari Safitri, Jeny Sandi Asmara Saputra, Muhamad Ogas Saputra, Rio Dwi Setiawan, Fajar Arief Setiawan, Firnando Anggi Siti Anisa Siti Asfiatul Mukaromah Sri Waluyo Sri Waluyo Sugeng Triyono Sugeng Triyono Sugianti, C. Sugiyanti, Cicih Tamrin Tamrin Tamrin Tamrin Tamrin, Tamrin Utama, Komang Muliandre Warji Warji Winda Rahmawati Winda Rahmawati Winda Rahmawati Winda Rahmawati Yulia, Meinilwita