Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Jurnal Teknik Pertanian Lampung or Journal of Agricultural Engineering (JTEP-L) is a peer-reviewed open-access journal. The journal invites scientists and engineers throughout the world to exchange and disseminate theoretical and practice-oriented researches in the whole aspect of Agricultural Enginering including but not limited to Agricultural Mechanization, Irrigation, Soil and Water Engineering, Postharvest Technology, Renewable Energy, Farm Structure, and related fields. The first issue was published in October 2012 by Department of Agricultural Engineering, Faculty of Agriculture, University of Lampung. Jurnal Teknik Pertanian Lampung has ISSN number 2302 - 559X for print edition on October 10, 2012 then 2549 - 0818 for online edition on January 10, 2017. Jurnal Teknik Pertanian Lampung is issued periodically four times a year in March, June, September, and December. Jurnal Teknik Pertanian Lampung has been indexed by Google Scholar, Crossref, Directory Open Access Journals (DOAJ), and CABI. Since Volume 5 Issue 1 (2016) Jurnal Teknik Pertanian Lampung has been accredited as SINTA 3 by Directorate General of Higher Education (DIKTI). Starting Volume 10 Issue 3 (2021) the journal received accreditation SINTA 2.
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<![CDATA[Cover Vol 11 no.2 June 2022 ]]>
<![CDATA[Agus Haryanto]]>
<![CDATA[ Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June ]]>
Publisher : <![CDATA[The University of Lampung ]]>
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DOI: 10.23960/jtep-l.v11i2.%p
<![CDATA[Power Tiller Requirement for Cassava Cultivation at Estate Scale ]]>
<![CDATA[Rufiani Nadzirah]]>;
<![CDATA[Agus Dharmawan]]>;
<![CDATA[Siswoyo Soekarno]]>;
<![CDATA[Indarto Indarto]]>;
<![CDATA[Tasliman Tasliman]]>
<![CDATA[ Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June ]]>
Publisher : <![CDATA[The University of Lampung ]]>
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DOI: 10.23960/jtep-l.v11i2.292-303
<![CDATA[Indonesia's food needs continue to increase along with population growth. Land development for supporting the cassava food estate is one of the priority programs of the central and regional governments. The purpose of this study was aimed at determining the need for power tiller for land management based on land area. This research was carried out at the planned location of the cassava plantation in Gunung Mas Regency, Central Kalimantan in 2020. The data on the land area planned was determined from a topographic map, while the tractor needs were obtained from the calculation of field capacity. The area of land suitable for cassava cultivation is 1227.57 ha which is divided into 25 blocks. The basis for the number of tractors as power tiller needed is determined from the time of tillage work so that it requires working capacity variables, including data on land area, work speed, and width of the plow implement. The plow studied in this study used 2, 3, 4, and 5 blades of disc plows. The need for a tractor with a 5-blade disc plow is 2 tractors that work fully and take turns cultivating an area of 1227.57 ha in the span of one cassava cultivation period (7-8 months). If the disc plow used is less than five blades, it will affect the working width of tillage, so the work time will be longer and the need for power tiller will increase. Keywords: Cassava, Disk Plow, Food Estate, Power Tiller, Tractor]]>
<![CDATA[Effect of Smoking Application on the Quality of Local Timor Corn ]]>
<![CDATA[Jefrianus Nino]]>;
<![CDATA[Eduardus Y. Neobeni]]>;
<![CDATA[Claudia S. Nule]]>
<![CDATA[ Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June ]]>
Publisher : <![CDATA[The University of Lampung ]]>
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DOI: 10.23960/jtep-l.v11i2.195-205
<![CDATA[Corn is one of the most widely cultivated plants in Indonesia and is used as a staple food by several people, especially in the province of East Nusa Tenggara. The way to store corn is done by farmers, namely smoking. Fumigation is done by burning wood in the smoking room (kitchen). Fumigation is carried out with the intention of preserving corn by utilizing a heat source that comes from the smoke from burning wood or other materials. The purpose of this study was to determine changes in water content changes during the smoking process using plant materials and to determine the quality of local Timor corn. Based on the results of the study, the average ambient temperature was 30.43ºC, the average RH was 81.76%, with an average initial moisture content of 18.76% wb was able to reduce the water content of local Timor corn to 11% wb (using Schleicera oleosa), 10.5% wb (Hyptis suaveolens), and 10.2 (Chromolaena odorata), average reducing sugars 0.52% wb, average protein content 7.82% wb, average carbohydrates of 7.59% wb, and average fat of 5.35% wb. Keywords: Corn, Nutrition Value, Smoking, Soluble Solid, Timor]]>
<![CDATA[Effect of IAA Addition and Some Organic Supplements on Growth and Rooting of Cavendish Banana (Musa Acuminata, AAA) In-Vitro ]]>
<![CDATA[Riza Intikhatus Sholikhah]]>;
<![CDATA[Makhziah Makhziah]]>;
<![CDATA[Widiwurjani Widiwurjani]]>
<![CDATA[ Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June ]]>
Publisher : <![CDATA[The University of Lampung ]]>
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DOI: 10.23960/jtep-l.v11i2.266-278
<![CDATA[In vitro propagation of Cavendish banana is an alternative to produce healthy, uniform and sufficient plant materials of high qualities. Appropriate culture media formulation is needed for shoot growth and rooting stage. This experiment aimed to study effects of IAA and organic supplements on in vitro shoot growth and rooting. Explants were subjected to MS medium with IAA and various organic supplements, in a factorial arrangement of a completely randomized design. The first factor was IAA concentrations (0; 0.5; 1 and 1.5 mg.L-1), and the second factor was types of organic supplement (control, coconut water, potato extract and banana extract). At 8 weeks after planting, shoot growth and root performance of plantlets were recorded. The results showed that addition of IAA did not affect shoot height. Addition of potato extract and banana homogenate resulted in the highest plantlets. Medium with IAA at 1 mg.L-1 resulted in the highest number of roots. The highest number of shoots was produced on media with IAA 1 mg.L-1 + coconut water and IAA 1.5 mg.L-1 + potato extract. The highest number of roots was produced in medium with potato extract. The longest roots were produced in media with 0.5 mg.L-1 IAA + banana homogenate. Keywords: Banana extract, Cavendish, Coconut water, IAA, Potato extract]]>
<![CDATA[Evaluation of Pre-Replanting Oil Palm Plant Health using the NDVI Index from Landsat 8 Satellite Imagery ]]>
<![CDATA[Betti Yuniasih]]>;
<![CDATA[Alief Rizky Purnama Adji]]>;
<![CDATA[Budi Budi]]>
<![CDATA[ Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June ]]>
Publisher : <![CDATA[The University of Lampung ]]>
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DOI: 10.23960/jtep-l.v11i2.304-313
<![CDATA[NDVI analysis was calculated based on the ratio of the reflection of red and near infrared waves. Aims of this study is to determine the density condition and health level of oil palm plants that have entered the age of replanting using the NDVI index from Landsat 8 satellite imagery and evaluate the plant health level based on the NDVI index compared with the LSU data. The research was conducted at Afdeling 1 Rantau Baru Plantation, PT. Pusaka Megah Bumi Nusantara, which is a plantation with old oil palm plant that have entered a period of replanting (22-29 years). The NDVI analysis results show the NDVI value is 0.034-0.469. Object identification shows that non-vegetation objects have an NDVI index value of 0.034-0.245 and vegetation objects have a value of 0.273-0.454. The result of the NDVI index shows the density of oil palm plants are categorized in the high category (dense). These results are appropriate with the actual condition of oil palm plantations which have an average density of 118 trees/hectare. The average NDVI value for vegetation objects is 0.423, that indicates the plants are in fairly healthy condition. The level of plant health as the result of the NDVI analysis was in appropriate with the LSU data which showed that the content of macro and micro nutrients in the leaves was quite high. Therefore, NDVI analysis can be an alternative to evaluate the condition of oil palm plantations efficiently. Keywords: Landsat 8 sattelite imagery, NDVI index, Oil palm, Plant density, Plant health]]>
<![CDATA[Effect of Penicillium chrysogenum Concentration on The Production and Characteristic of Pectinase Enzyme from Pineapple (Ananas comosus) Peel Waste ]]>
<![CDATA[Bayu Setyaji]]>;
<![CDATA[Maria Marina Herawati]]>
<![CDATA[ Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June ]]>
Publisher : <![CDATA[The University of Lampung ]]>
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DOI: 10.23960/jtep-l.v11i2.174-183
<![CDATA[This study aimed to determine the effect of various concentrations of Penicillium chrysogenum isolates on the production of pectinase enzymes from pineapple peel waste. The experiment was arranged in CRD (completely randomized design) with six different isolate concentrations (4%; 8%; 14%; 16%; 20%; and 24%). The experiment constituted of three stages, namely production of enzymes by using Penicillium chrysogenum isolates, enzyme harvesting with a goal to obtain a crude extract of the enzymes, and enzyme characterization. Parameters in this study included enzyme activity, optimum temperature, optimum pH, Km value, and Vmax value. Results showed that the highest yield (1.87 g) was obtained from the 24% treatment and the lowest in the 4% treatment at 1.63 g. The highest enzyme activity in the 24% treatment was 1.924 U/ml and the lowest was in the 4% treatment, namely 0.949 U/ml. The highest Vmax value was 0.690 U/ml from the 24% treatment and the lowest was 474 from the 4% treatment. Conversely, the highest Km (0.040 mg/ml) value was found in 4% treatment and the lowest (0.016 mg/ml) was observed in 24% treatment. Keywords: Characteristics, Enzyme, Fungi, Pectinase, Pineapple]]>
<![CDATA[Application of Electrical Conductivity (EC) for Some Potato Varieties in the Aeroponically Seed Production with Root Zone Cooling and Evaporative Cooling in Tropical Lowlands ]]>
<![CDATA[Eni Sumarni]]>;
<![CDATA[Priswanto Priswanto]]>;
<![CDATA[Zaroh Irayani]]>
<![CDATA[ Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June ]]>
Publisher : <![CDATA[The University of Lampung ]]>
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DOI: 10.23960/jtep-l.v11i2.184-194
<![CDATA[Aeroponic potato seed production in the lowlands has been carried out by root zone cooling and evaporative cooling in order to reduce high temperature stress for the roots and tops of potato plants. However, the effect of nutrient solution EC on several varieties of potato seeds for an aeroponic system with a combination of root zone cooling and evaporative cooling for potato seed production in the lowlands has not been done. This study aims to obtain the response of potato varieties and the application of different ECs on aeroponic seed production with root zone and evaporative cooling in tropical lowlands. The factors analyzed : 1. Variety (V): V1 (MZ), V2 (Granola K), V3 (Granola L), and 2. Nutrient concentration (EC): EC1 (1.5 mS/cm for Week 1- 4, 2 mS/cm for Week 5 until harvest), and EC2 (1.5 mS/cm for Week 1-4, and 3 mS/cm for Week 5 until harvest), while the design used was RAK with 3 replications. The results showed that the Granola K and EC2 varieties are more efficient for potato seed production in the lowlands with the application of root zone and evaporative cooling. This variety produced the highest number of tubers up to 30 tubers/plant. Similarly, the Granola L and MZ varieties showed similar results with a total number of tubers above 10 tubers/plant. Keywords: Cultivation, Greenhouse, Hydroponics, Nutrition, Tubers]]>
<![CDATA[Design and Performance Testing of Semi-Automatic Machine for Potato Peeler-Cutter ]]>
<![CDATA[Didik Sugiyanto]]>;
<![CDATA[Resma Adi Pangestu]]>;
<![CDATA[Yefri Chan]]>;
<![CDATA[Aep Saepul Uyun]]>
<![CDATA[ Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June ]]>
Publisher : <![CDATA[The University of Lampung ]]>
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DOI: 10.23960/jtep-l.v11i2.325-338
<![CDATA[In processing potatoes into sticks on a large scale, an equipment is needed that can facilitate the manufacturing process. Therefore, it is necessary to research the design of the potato peeler and cutter and test the performance of the tool. This study aims to determine the design and selection of materials, to determine the production process of potato peeler and cutter and to determine the effect of rotation on time and level of cleanliness of potatoes. This machine consists of several components, namely the frame, peeler tube, cutting tube, transmission unit and electric motor. The working mechanism of this tool is that the peeler disc which is moved by an electric motor rotates to push the potatoes, so that the rotation causes friction between the potatoes and the peeler tube which has a rough surface, this friction causes the potato skin to peel off and is then forwarded to the potato cutter tube with a propeller, which is driven by an electric motor so that the rotation pushes the potatoes into the knife so that the potatoes that pass through the peeler tube are cut into sticks. From the results of testing the tool obtained data on potatoes grade A with an average time of 2 minutes and a motor rotation of 170 rpm, capable of peeling 96.8% of potatoes with a weight loss of 3.2% of potatoes. For potatoes grade B with an average time of 2 minutes and a motor rotation of 170 rpm was capable of peeling 97% of potatoes with a weight loss of 3%, and the results of potato cuts with a cross sectional size of 6.9 × 6.9 mm.Keywords: french fries, peeler, cutter, potato stick]]>
<![CDATA[Non-Destructive Measurement of Rice Amylose Content Based on Image Processing and Artificial Neural Networks (ANN) Model ]]>
<![CDATA[Tri Wahyu Saputra]]>;
<![CDATA[Yagus Wijayanto]]>;
<![CDATA[Suci Ristiyana]]>;
<![CDATA[Ika Purnamasari]]>;
<![CDATA[Wildan Muhlison]]>
<![CDATA[ Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June ]]>
Publisher : <![CDATA[The University of Lampung ]]>
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DOI: 10.23960/jtep-l.v11i2.231-241
<![CDATA[The purpose of this study was to develop a method of measuring the amylose content of rice using image processing techniques and an Artificial Neural Network (ANN) model. The rice samples came from six varieties, namely Way Apo Buru, Mapan P05, IR-64, Cibogo, Inpari IR Nutri Zinc, and Inpari 33. The amylose content was measured by laboratory tests and the color intensity was measured based on the RGB (Red, Green, Blue). The ANN model will correlate the RGB color intensity as input with the amylose content as the output. The ANN model used is backpropagation type with 3 input layer nodes and 2 hidden layers with 3-5-5-1 architecture. Variations in the training model used are 27 variations of the activation function. The amount of data used for model training of 30 data while for validation of 12 data. The best ANN model is determined from the high value of accuracy (100%-MAPE) and the value of coefficient of determination (R2). The results showed the best network architecture on the activation function purelin-logsig-tansig. The R2 value on the best training and validation results of 0.98 and 0.66 while the accuracy values for the best training and validation results of 98.15 and 66.82. The validation results show that the developed non-destructive method can be used to quickly and accurately measure the amylose value of rice based on RGB color value. The test results show that the non-destructive method developed cannot be used to measure the amylose content of rice quickly and accurately based on the RGB color intensity, so it needs further development. Keywords: Amylose, Artificial neural networks, Image processing, Rice]]>
<![CDATA[Energy Analysis on the Processing of Green Tea ]]>
<![CDATA[Wahyu K Sugandi]]>;
<![CDATA[Kralawi Sita]]>;
<![CDATA[Totok Herwanto]]>;
<![CDATA[Shida Habsari]]>
<![CDATA[ Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June ]]>
Publisher : <![CDATA[The University of Lampung ]]>
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DOI: 10.23960/jtep-l.v11i2.206-217
<![CDATA[Energy analysis on processing of green tea at green tea factory. Research Institute for Tea and Cinchona (RITC) Gambung was conducted to analyze energy use and identify energy use. Energy analysis is calculated based on the use of biological energy, direct energy, and indirect energy at each process of green tea processing started from withering to packaging activities. This research was conducted with descriptive analysis method by measure and calculate the energy usage for each process. The results showed that the total of energy use in green tea 51.141 MJ/kg. Indirect energy is the biggest energy contributor to the use of total energy (with indirect energy) with energy values reached 46.764 MJ/kg. Meanwhile, the total use of biological energy is 0.01 MJ/kg and the total use direct energy is 4.366 MJ/kg. The results of the energy analysis assestment show that energy savings can be made by maintaining and replacing the damaged parts of the machine especially maintenance of burner in withering process, changing the concept of tea packing to 55 kg of tea/pack, changing the capacity of ball tea machine in the second drying process to 400 kg of dry tea to save the electricity supply system. The results of SWOT analysis showed in quadrant I, where the strategy in this quadrant is S-O strategy, which is growth-oriented strategy. Keywords: Energy analysis, Energy saving, Green tea, Processing of tea, SWOT]]>
