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Nazif Ichwan
Program Studi Keteknikan Pertanian Fakultas Pertanian USU
Agriculture, Biological Sciences & Forestry Engineering

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Analysis of Rainfall in Pine Forest in Taman Hutan Raya Bukit Barisan Tongkoh Kabupaten Karo Based on Water Balance Model Riauli Anggriani Pardede; Sumono .; Nazif Ichwan; Edi Susanto
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 1 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Water balance model is stacked to predict soil moisture storage in pine forest. The balance is the appropriate between  the coming rainfall and the going water from pine forest. Water balance model consists of rainfall, throughfall, stemflow, interception, actual evapotranspiration, and run off. The results of research showed that daily rainfall was 16,326 mm/day and annual rainfall was 2309 mm/year. Actual evapotranspiration was 2,546 mm/day. Soil moisture storage found during 4 months the research was 385,450 mm, therefore it can be concluded that the research region was suitable for growing of pine forest.
Study of soil infiltration rate in some land uses at Desa Tanjung Putus Kecamatan Padang Tualang Kabupaten Langkat Sri Puspita Sari; Sumono .; Nazif Ichwan; Edi Susanto
Jurnal Rekayasa Pangan dan Pertanian Vol 1, No 1 (2013): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The aim of this research was to know the infiltration rate and matrix potential in some land uses; i.e. field, rubber field, and bush at Desa Tanjung Putus Kecamatan Padang Tualang Kabupaten Langkat using Philips equation model. Parameters that perceived were moisture content, soil texture, bulk density, particle density, porosity, and organic matter. This research used double ring infiltrometer and observed for 240 minutes. The results showed that the biggest infiltration rate was found in rubber field , and bush ; the smallest was found in field . The matrix potential in that lands were become smaller by the increasing of soil moisture.
Determination of Value of Crop Factor With Corn and Cassava Using USLE Method and Small Plots on Ultisol Land in Siborongborong District of North Tapanuli Yenci Wulandari Manik; Sumono Sumono; Nazif Ichwan; 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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Crop factor (C) is a factor that is easier to modify in an effort to reduce erosion. This study was aim to determine the value of crop factor of corn and cassava during July to October 2012 using USLE prediction and methods of small plots. In addition, this study was also aim to quantify the allowable erosion rate (T) and Erosion Hazard Level (TBE). Parameters measured were effective soil depth, soil permeability, levels of C-organic soil, soil texture, soil structure, and rainfall. The results showed that the value of the cassava crop factor using rainfall research data for 4 months and 12 years data were 0.68 and 0.69 respectively, and the value of the corn crop factor using rainfall research data for 4 months and 12 years data were 0.58 and 0.59 respectively. The amount of allowable erosion rate is 17.17 ton (ha.year)-1. While Erosion Hazard Rate (TBE) corn and cassava land were 0.020 and 0.024 respectively, which included in the low category. Key words: Erosion, Ultisol, Crop Factor, Siborongborong
Study of Infiltration Soil Rate in Some Lands Using at Desa Tongkoh Kecamatan Dolat Rayat Kabupaten Karo Ahmad Eka Putra; Sumono Sumono; Nazif Ichwan; 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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The aim of this research was to know the infiltration rate in some land uses at Desa Tongkoh Kecamatan Dolat Rayat Kabupaten Karo using Philips equation model. The land uses i.etomato field, avocado field, and pine forest were observed. Parametersobserved were moisture content, soil texture, organic matter, bulk density, particle density, porosity, cumulative infiltration. Double ring infiltrometer that pressed into the soil were used in this research. The decreased of water level was observed with interval of 0, 5, 10, 20, 30, 45, 60, 120, 180, 240 minutes. The results for every land uses showed that the highest infiltration was found in tomato field, and pine forest, the lowest was found in avocado field. Factorsaffected the infiltration rate were soil texture, porosity and organic matter. Key word: Infiltration Rate, Tomato Field, Avocado Field, Pine Forest, Tongkoh Village
Design of Pineapple Peeler with Manual Press System Nando Edi Pramono Lingga; Achwil Putra Munir; Nazif Ichwan
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 4 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The handling of pineapple after harvest in skin peeling on farmer level  generally are done manually by knife. Therefore, to overcome this  weaknesses and disadvantages, a semi mechanic pineapple skin peeler was design that could peels the pineapple skin faster than manually, so it could made the work capacity increased, more neat peeling results, reducing the labor and can be used by anyone. The research was done by study of literature and observing the pineapple skin peeler with press manual system. Then designing the shape and coupling the components of the pineapple skin peeler. The pineapple skin peeler capacity for  11 cm, 10 cm and 7,5 cm blades diametre before honed were 139,76; 143,26; 149,25 pineapples per hour respectively. The pineapple skin peeler capacity for 11 cm, 10 cm, 7,5 cm blade diametre after honed were 143,47; 144,57; and 150,76 pineapples per hour respectively. Keywords : Blade, equipment design, pineapple skin peeler
KAJIAN SIFAT FISIKA DAN KIMIA TANAH PADA LAHAN KELAPA SAWIT DENGAN BEBERAPA JENIS VEGETASI YANG TUMBUH DI KEBUN PTP NUSANTARA III TANAH RAJA (Study of Physical and Chemical Soil Characteristics in Oil Palm Plantation with Several Vegetations That Grow in Leni Leni; Sumono Sumono; Nazif Ichwan
Jurnal Rekayasa Pangan dan Pertanian Vol 5, No 1 (2017): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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ABSTRACT   Physical and chemical soil characteritic is an  important factor for the growth of oil  palm. This research was aimed to study physical and chemical soil characteritics on the oil palm with vegetation Mucuna bracteata, Nephrolepis biserrata, grass and without vegetation  in Tanah Raja PTP Nusantara III. The observed parameters were soil texture, porosity, water content of field capasity, soil permeability, total Nitrogen, available soil Phosphate, and land Potassium exchange. The results showed that the soil type was ultisol with sandy clay loam texture and pH ranged from 4.95 to 5.29 (sour). The soil vegetations had porosity of 50.44 to 52.21% at a depth of 5 cm and 46.86 to 46.96% at a depth of 25 cm. The water content of field capacity was  ranged from 32.12 to 38.98%. Permeability was ranged from 4.57 to 6.01 cm/h at a depth of 5 cm and 2.21 to 3.69 cm/h at a depth of 25 cm. N total was ranged from 0.11 to 0.12%. P available was ranged from 12.87 to 18.96 ppm. K exchange of land was ranged from 0.56 to 0.61 me/100g. The soil without vegetation had porosity of 46.91% at a depth of 5 cm and 45% at a depth of 25 cm. The water content of field capacity was 31.54%. Permeability was 2.86 cm/h at a depth of 5 cm and 1.84 cm/h at a depth of 25 cm. Total N was 0.09%. P available was 10.75 ppm. K exchange of land was 0.55 me/100g. Keyword: Soil physical and chemical, vegetation, oil palm plantation ABSTRAK   Sifat fisika dan kimia tanah merupakan faktor penting bagi pertumbuhan kelapa sawit. Penelitian ini betujuan untuk mengkaji sifat fisika dan kimia tanah pada lahan kelapa sawit dengan vegetasi kacang-kacangan (Mucuna bracteata), paku harupat (Nephrolepis biserrata), rumput dan tanpa vegetasi di Kebun PTP Nusantara III Tanah Raja. Parameter yang diamati meliputi tekstur tanah, porositas, kadar air kapasitas lapang, permeabilitas tanah, N-total, P tersedia dan K tukar tanah. Hasil penelitian menunjukkan jenis tanah di daerah penelitian adalah  ultisol bertekstur lempung liat berpasir dan pH berkisar 4,95-5,29 (masam). Tanah dengan vegetasi mempunyai porositas berkisar 50,44-52,21% pada kedalaman 5 cm dan 46,86-46,96% pada kedalaman 25 cm, kadar air kapasitas lapang berkisar 32,12-38,98%, permeabilitas berkisar 4,57-6,01 cm/jam pada kedalaman 5 cm dan 2,21-3,69 cm/jam pada kedalaman 25 cm, N-total berkisar 0,11-0,12%, P tersedia berkisar 12,87-18,96 ppm, K tukar tanah berkisar 0,56-0,61 me/100g. Tanah tanpa vegetasi mempunyai porositas 46,91% pada kedalaman 5 cm dan 45% pada kedalaman 25 cm, kadar air kapasitas lapang 31,54%, permeabilitas 2,86 cm/jam pada kedalaman 5 cm dan 1,84 cm/jam pada kedalaman 25 cm, N-total 0,09%, P tersedia 10,75 ppm, K tukar tanah 0,55 me/100g.   Kata Kunci: Fisika dan kimia tanah, vegetasi, lahan kelapa sawit
KAJIAN BEBERAPA METODE PEMBERIAN AIR PADI SAWAH (Oriza sativa L) VARIETAS CIHERANG DI RUMAH KACA (Study of Various Provison of Water Paddy Methods (Oryza sativa) Ciherang Variety Rice in Green House) Riza Revita Pinem; Sumono Sumono; Nazif Ichwan
Jurnal Rekayasa Pangan dan Pertanian Vol 5, No 2 (2017): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

ABSTRACT The provision of water on a paddy is very influential to rice growth and production. This research was aim ed to study various paddy water provision methods on ciherang variety (Oryza Sativa L) in greenhouse. Parameters observed wer evapotranspiration value, potential evaporation, crop coefficient, percolation, grains weight and dry plant weight. The results show-ed that the value of crop evapotranspiration for intermiten method, humid and flooding were in an average of 1.54 mm / day, 1.60 mm / day, and 1.71 mm / day respectively. The average value of potential evaporation from vegetative phase to the ripening was 1.62 mm / day. The value of the plant's method of intermiten coeffitient, humid and flooding were in an average of 0.95, 0.99 and 1.06 respectively. The value of percolation to intermiten, humid and floodingwere in an average of 1,83 cm / day, 1 , 3 cm / day and 3.36 cm / day respectively. The plant's dry weight ofintermitent, humid and flooding were in an average of 87.5 g, 84.1 g and 77.5 g respectively and the weight of grains in intermiten, humid and flooding were in an average of 50 g, 43.3 g and 30 g respectively. Keywords : Ciherang rice, evapotranspiration, water provision, crop coefficient, percolation. ABSTRAK Pemberian air padi sawah sangat mempengaruhi pertumbuhan dan produksi padi. Penelitian ini bertujuan untuk mengkaji beberapa metode pemberian air padi sawah (Oriza sativa L) varietas ciherang di rumah kaca. Parameter yang diamati adalah evapotranspirasi tanaman, evaporasi potensial, koefisien tanaman, perkolasi, berat bulir padi dan dan berat kering tanaman. Hasil penelitian menunjukkan nilai evapotranspirasi tanaman untuk metode terputus, macak-macak dan penggenangan berturut-turut dengan rata-rata 1,54 mm/hari, 1,60 mm/hari, dan 1,71 mm/hari. Nilai rata-rata evaporasi potensial mulai dari fase vegetatif hingga pemasakan sebesar 1,62 mm/hari. Nilai koevisien tanaman untuk metode terputus, macak-macak dan penggenangan berturut-turut dengan rata-rata 0,95, 0,99 dan 1,06. Nilai perkolasi untuk metode terputus, macak-macak dan penggenangan berturut-turut dengan rata-rata 1,83 cm/hari, 1,3 cm/hari dan 3,36 cm/hari. Berat kering tanaman untuk metode terputus, macak-macak dan penggenangan berturut-turut dengan rata-rata 87,5 g 84,1 g dan 77,5 g  dan berat bulir padi pada metode terputus,macak-macak dan penggenangan berturut-turut dengan rata-rata 50 g, 43,3 g dan 30 g. Kata kunci: padi ciherang, evapotranspirasi, pemberian air, koefisien tanaman, perkolasi.
Co-Authors Achwil Putra Munir Ahmad Eka Putra Edi Susanto Leni Leni Nando Edi Pramono Lingga Riauli Anggriani Pardede Riza Revita Pinem Sri Puspita Sari Sumono . Sumono . Sumono Sumono Yenci Wulandari Manik