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Lukman Adlin Harahap
Program Studi Keteknikan Pertanian Fakultas Pertanian USU
Agriculture, Biological Sciences & Forestry Engineering

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Breaking The Shell of Candlenut Using Ripple Mill System with Various Immersion Temperature Asrita Yohana Siallagan; Saipul Bahri Daulay; Lukman Adlin Harahap
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 1 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Generally candlenut are still broken traditionally. The product broken candlenut is affected by immersion process ofdrying and it will affect the product significantly. This research was performed in December 2011 up to February 2012 atAgricultural Engineering Laboratory, Faculty of Agriculture USU, Medan using non factorial randomized block design withone factor i.e immersion temperature (3 0C, 6 0C, and 9 C). The parameters observed were percentage of whole nut, thepercentage of nut broken in half, the percentage of crushed nut, the percentage of sticky core, immersion temperatureand engineering economics analysis using basic value, BEP, NPV, and IRR.  The results showed that immersiontemperature had significantly affected all parameters. The best result was immersion temperature at 3 0C. This equipmentis feasible to operate with the basic value of Rp. 119,92 kg-1, the BEP of 37.329,32 kg year, NPV of Rp. 8.121.452,19 ininterest 12% and Rp. 7.171.112,51 in interest 15%, and IRR of 37,64%.-10
Evaluation of Erosion Rate on Several Slopes on Ultisol Land With Peanut Plant on Small Plot Method and USLE Prediction in The Siborongborong District, North Tapanuli Agri Dayanti Sipayung; Sumono Sumono; Lukman Adlin Harahap
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 2 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Cultivation of crops on sloping land is  vulnerable to erosion if no soil and water conservation measures applied. This study was aim to quantify the erosion, determining the tolerable rate of erosion, and the erosion rate (TBE) in the Ultisol soil on slopes: 9%, 19%, and 32% plantedwith  peanuts, using small plots and USLE predictions on July-October 2012 in the District Siborongborong. The results showed that the amount of erosion that occurs for USLE prediction method based on 12 years of rainfall data for the slopes of 9%, 19%, 32%, were 20.91, 69.43, and 166.47 tons/ha.year respectively, with moderate to very high TBE category. USLE prediction method based on rainfall data for four months of study with 9%, 19%, 32% slopes, were 0.4, 1.2,and 2.9 ton/ha.year respectively with low TBE category. Small methods plots for slopes of 9% 19%, 32%, were 12.36, 12.54, and 0.63 tons/ha year respectively with low TBE category. The magnitude of the tolerable rate of erosion at 17:17 tonnes/ha.year (17.17 mm/ha.year). Key words: Erosion, Ultisol land, Peanut Plant, Siborongborong
Evaluation of Erosion Rate With Small Plots and USLE Methods on Ultisol Soil Slope With Sweet Potato Plants in North Tapanuli Siborongborong Devi Yundri Barus; Sumono Sumono; Lukman Adlin Harahap; Edi Susanto
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 2 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Agricultural cultivation, particularly food crops grown on sloping land without conservation  water and soil measures have a high erosion potential. This study was aimed to measure the erosion by determining the rate of allowable erosion  and erosion hazard level on Ultisol soil using Sweet potato intercropping with plant with slope of 9%, 21%  and 32 % that small plots and USLE methods in July-October 2012 in the Siborongborong District. The results showed the amount of erosion  using small plots for slope of  9 %, 21 % and 32 % were respectively of 0.26 tons ha-1 year-1, 0,40 tons ha-1 year-1 and 0,54 tons ha-1 year-1 respectively with low erosion hazard level category. USLE method based on 12 years of rainfall data for the slope of 9 %, 21 % and 32 %, were 42,49 tons ha-1 year-1 , 165,31 tons ha-1 year-1 and 351,35 tons ha-1 year-1 respectively with moderate to very high erosion hazard level category. USLE method based on the rainfall data 4 months  the study period for slope of 9 %, 21%, and 32 % respectively by 0,75 tons ha-1 year-1 , 2,90 tons ha-1 year-1 , and 6,09 of tons/(ha. year) with low Erosion Hazard Level category and the magnitude of the erosion rate allowed was 17.17 tons ha-1 year-1 or equal to 17,17 mm year-1. Key words: Erosion, Ultisol Soil, Sweet potato plant, Siborongborong.
Evaluation of Erosion Rate With Small Plots and Usle Methods in Some Ultisol Soil Slope With Mixed Plants in North Tapanuli Siborongborong District Mardohar Aritonang; Sumono Sumono; Lukman Adlin Harahap; Edi Susanto
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 2 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Sloping land has a high erosion potential if converted to agricultural land without conservation measures. This study was aimed to measure erosion, determine tolerable erosion rate and Erosion Hazard Level (TBE) the Ultisol soil erosion using intercropping crop with peanuts and corn with slope of 9%, 19%, and 31% in July-October 2012 in the District Siborongborong using small plots and USLE predictions. The results showed that the amount of erosion using small plots for slope 9%, 19%, and 31% were 0,3 tons (ha.years)-1, 0.52 tons (ha.years)-1, and 0, 68 tons (ha.years)-1 respectively with low Erosion Hasard Level (TBE) category. USLE predictions based on 12 years of rainfall data for the slope of 9%, 19%, and 31% were 40.78 tons (ha.years)-1, 130.08 tons (ha.years)-1, and 312.78 tons (ha.years)-1 respectively with Erosion Hazard Level (TBE) category of moderate to very high. Predictions based on the USLE 4 months rainfall data for slope of 9%, 19%, and 31% were 1,02 tons (ha.years)-1, 3,28 tons (ha.years)-1, and 7,89 tons (ha.years)-1 respectively with low Erosion Hazard Level (TBE) category. The amount of tolerable erosion rate is 17,17 tons (ha.years)-1. Key words: Erosion, Ultisol Soil, Mixed Crops, Siborongborong
Test of Variant of Knife Edge Shape on Mechanical Coconut Peeler Agus Roy Butar-Butar; Saipul Bahri Daulay; Lukman Adlin Harahap; Edi Susanto
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 2 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

This research was done to test the variant of the knife edge shape on the effective capacity of the equipment, percentage of material unpeeled, and fuel consumption on mechanical coconut peeler. This research was using non factorial completely randomized design. It was found that the effective capacity of the equipment, percentage of material unpeeled, and fuel consumption were 231.24 unit hour-1, 6,67%, and 2.37 litre hour-1 respectively triangle knife edge,  301.97 unit/hour, 13.33%, and 2.62 litre/hour respectively cone knife edge, and 192.48 unit hour-1, 13.33% and 1.85 litre hour-1 respectively nail knife edge. The results showed that the variant of knife edge had significant effect on the effective capacity and fuel consumption and had no effect on the percentage of material unpeeled. Key words: knife edge, peeler, coconut
Evaluation of Several Methods of Determining Drainage Modulus in Wetland Ricefield Sei Beras Sekata Regional Sunggal Deli Serdang District Zulhakki Zulhakki; Sumono Sumono; Lukman Adlin Harahap; Edi Susanto
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 2 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The aim of this study was to quantify and to compare the modulus values ​​of wetland ricefield drainage in the village of Sei Beras Sekata. Drainage modulus value is used as a reference to throw out water from the wetland ricefield. Drainage modulus values ​was ​calculated by three methods i.e plotting maximum daily rainfall, daily inundation simulations with a daily water balance in the mapped fields, and using the formula of the Department of Public Works. It was found from the research, that the drainage modulus values on daily maximum rainfall plotting methods was 29 mm day-1, the daily inundation simulation methods with high daily water balance mapped fields was 40.3 mm day-1, and formula of the Department of Public Works was 61,2 mm day-1. Key words: drainage modulus, wetland ricefield, Sei Beras Sekata
Test Speed Round at Various Levels of Equipment Type Rotary Roasters Coffee to Quality Products Lasnita Manurung; Achwil Putra Munir; Lukman Adlin Harahap
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 2 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The RPM of coffee roaster mixer tool is needed to care. The machine RPM will affect the roasting quality. Various level of PRM were tested to know the quality of coffee produced. Research had been conducted at agricultural engineering laboratory, faculty Agricultural USU in Juni – September 2012 with using factorial randomized block design with one factor i.e 10, 35,5 and 61 revolution per minute. Parameters observed were organoleptic test, yield, process capacity and water content. The results showed that the RPM had no effect on the organoleptic test, yield and process capacity, and had highly significantly effect on the water content. Key words: Coffee roaster machine, RPM test, Coffee quality
Test of Mechanical Roaster Rotary Type with Soybean Commodity Syahnan Riady Nasution; Saipul Bahri Daulay; Lukman Adlin Harahap
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 3 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Mechanical roaster has multi functional for bean commodities. The aim of study was to test mechanical coffee roaster rotary type with soybean commodity. This research was conducted at the Laboratory of Agricultural Engineering, Faculty of Agriculture, University of North Sumatra in November until December 2012 by study of literature, experiment, observation, and testing of the equipment. Parameters observed were effective capacity, moisture content, and the economic analysis. The results showed that the effective capacity of a mechanical soybean roaster  type rotary  was 5.590 kg/h, the highest water content was 7.07% and the lowest was 5.70%, while from the economic analysis, the BEP was 3.885,42 kg, NPV 16% and 20% were Rp. 13. 758.853,97 and    Rp. 12.086.672,76, respectively and the IRR was 52,91%. Keywords: mechanical roasters, soybean, water content, effective capacity.
Rainfall Analysis in Kebun Rambutan oil palm plantation PT Perkebunan Nusantara III with water balance model Aldilla Pratiwi Tanjung; Sumono Sumono; Lukman Adlin Harahap
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 4 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Oil palm has been rumored as a plant which more water consumption, therefore a research is needed with water balance model to arrange and analyze rainfall parameters as a water source at Kebun Rambutan PT Perkebunan Nusantara III during March-July 2013. Water balance model consist of rainfall, throughfall, stemflow, interception, actual evaporation and runoff. The results showed that the soil at the site has Ultisol land order with sandy clay loam texture and bulk density of, 1,284 g/cm3, particle density of 2,663 g/cm3, porosity of 51,471% and soil organic matter of 2,275%. Daiy rainfall during the research was 3,456 mm/day, however based on yhe calculation of 10 years data from BMKG, daily rainfall during March-July was 4,269 mm/day. Actual evaporation was 2,929 mm/day and in field capacity was 358,05 mm, so that 143,837 mm more water as percolation. Keywords : rainfall, oil palm, water balance
The determination of value of soybean and lemongrass plants factors using small plots and USLE methods on Andepts soil in Kwala Bekala Estate USU Dwi Ayu Febrina; Sumono Sumono; Lukman Adlin Harahap
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 4 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

One way to overcome erosion is using vegetative methods, where its influence can be manifested by the C factor. The best C factors used in determining the amount of erosion is the value of C in the local area. This study was aimed to determine the value of soya bean and lemongrass crop factor on the Andepts soil during March to July 2013 using the method of small plots and USLE. Parameters used in determining the C factor were the amount of erosion, the allowable erosion rate, and the erosion hazard level. The results showed that the amount of erosion on land without a crop was 0,46 ton (ha.year)-1, on lemongrass land was 0,39 ton (ha.year)-1, on soybeans land was 0,30 ton (ha.year)-1. The amount of allowable erosion rate was 32 ton (ha.year)-1. While erosion hazard rate on land without a crop was 0,014; on lemongras land was 0,012 and on soybeans land was 0,009 which include in low category. The value of soybeans crop factor using rainfall research data for 4 months and 10 years data was 0,655 and 0,666 respectively. The value of lemongrass crop factor using rainfall research data for 4 months and 10 years data was 0,851 and 0,866 respectively. Key words : andepts, C factor, erosion,, Kwala Bekala USU
Co-Authors Achwil Putra Munir Agri Dayanti Sipayung Agus Roy Butar-Butar Ainun Rohanah Albert Trimitra Siahaan Aldilla Pratiwi Tanjung Annisa Fatin Amran Annisa Purnamasari Damanik Asrita Yohana Siallagan Devi Yundri Barus Dwi Ayu Febrina Edi Susanto Hisyam Pahlevi Indi Sajiwo Johanes Mikael Simanulang Lasnita Manurung Liztia Dwitami Adriani Luthfan Minhal Mardohar Aritonang Mitra Junetris Tarigan Muhammad Yusuf Saipul Bahri Daulay Suci Hasti Sulastri Panggabean Sumono Sumono Syahnan Riady Nasution Tri Ayu Purnamasari Yoga Purnama Noor Zulhakki Zulhakki