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All Journal Jurnal Ilmu Pertanian Indonesia Forum Pasca Sarjana Agroland : Jurnal Ilmu-Ilmu Pertanian Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Ilmu Pertanian KULTIVAR Peronema Forestry Science Journal Jurnal Vektor Penyakit Jurnal Online Mahasiswa (JOM) Bidang Pertanian Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan JTSL (Jurnal Tanah dan Sumberdaya Lahan) AGROLAND: The Agricultural Sciences Journal Jurnal Geografi Jurnal Serambi Engineering JURNAL EKOBIS DEWANTARA JMB : Jurnal Manajemen dan Bisnis Jurnal Geofisika AGRINULA: Jurnal Agroteknologi dan Perkebunan Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN Fisheries Of Wallacea Journal SRIWIJAYA JOURNAL OF ENVIRONMENT PERTANIAN TROPIK Jurnal Comparative : Ekonomi Dan Bisnis
ABDUL RAUF
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Physics Public Health Social Sciences Veterinary Other

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Intersepsi Curah Hujan di Hutan Hujan Tropis: Studi Kasus di Taman Nasional Lore Lindu Sulawesi Tengah Abdul Rauf; Hidayat Pawitan; Tania June; Cecep Kusmana
Jurnal Ilmu Pertanian Indonesia Vol. 13 No. 1 (2008): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

This filed research was conducted from Apr 2006 to .Juni 2007 at natural tropical rainforest of the Lore Lindu National Park, Central Sulawesi. The objectives were to study the effect of rainfall properties and vegetation characters on interception losses through mathematical model approach, to estimate the rainfall interception losses and to determine the dominant factors influencing them. Observation of vegetation characters in the study area indicated that the vertical and horizontal structure were in good conditions with high leaf area index (LAI 4.8-6.43 m2.m-2 ), ground cover (68.5-92.59%) and wide canopy at average 5.59 (12.05-9.83 m2 Total rainfall (P) on the first measuring phase (Apr 2006-March 2007) was 1502,6mm for 172 events. Dominant rainfall depth was 0.5-5mm for 78 events with cumulative rainfall at 182.2mm or 12.3%, of P. Dominant rainfall intensity was 1--10 mm per hour for 121 events with cumulative rainfall 140.2 mm or 9.3 % of P. The mathematical relationship between rainfall properties and vegetation characters with throughfall, stemflow and interception loss show that rainfall depth and LAI are two factors that strongly influences as expressed: interception loss: Ic= 0. 786+0.343* P+0.051 *LA I (R2=73,77) Application of this equation and Gash model to the second measurement phase (Apr 2007-Juni 2007) gave good agreement on interception estimate and sensitivity, and considering data requirement and calculation procedure this equation is applicable for interception estimation. The critical point of this result is the rainfall properties on Lore Lindu National Park that is very important to forest management, especially in controlling of flooding. Keywords : rainfall interception, tropical rain forest, vegetation characters
Kajian Karakteristik Fisik Tanah di Lahan Perkebunan Kelapa Sawit (Elaies guinensis Jacq.) Kebun Adolina PTPN IV pada Beberapa Generasi Tanam Juliana Epesus Simarmata; Abdul Rauf; Benny Hidayat
Jurnal Ilmu Pertanian Indonesia Vol. 22 No. 3 (2017): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (295.197 KB) | DOI: 10.18343/jipi.22.3.191

Abstract

Soil management on some plantation land uses, such as fertilizing, clearing, the use of heavy equipment will affect, and the soil properties of the land use. This study aims to determine changes in physical properties of soil in the plantation oil palm plantations Adolina PTPN IV on 3 generations of planting. It was conducted at Adolina Estate of PTPN IV, Serdang Bedagai, Sumatera Utara in July-December 2016. The method used in this research is survey method with descriptive analysis. Soil samples taken are controls are the land has never planted oil palm (K0), palm oil 1st generation (G1), 3rd generation (G3), and 4th generation (G4). The results showed that planting of oil palm in the Adolina Garden increased soil pore space, soil structure, increased humidity (temperature), soil texture, the ability of roots to penetrate the soil (solum), and increased organic material. But it does not give a noticeable change to the parameters of soil density, permeability, and carbon storage in the soil.
The field observation of this research was conducted from June 2005 to May 2007 in tropical rainforest at Lore Lindu National Park, Central Sulawesi.  The main objectives of this research were to study (i) the relationships between interception loss and rainfall properties and vegetation characters and to determine the dominant factors affected, (ii) the effect of rainfall interception on energy flux and mass transfer, and (iii) the dynamics of vertical energy flux under the forest and grass lan Abdul Rauf; Hidayat Pawitan; Cecep Kusmana; Tania June; G. Gravenhorst
Forum Pasca Sarjana Vol. 31 No. 4 (2008): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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Abstract

The field observation of this research was conducted from June 2005 to May 2007 in tropical rainforest at Lore Lindu National Park, Central Sulawesi.  The main objectives of this research were to study (i) the relationships between interception loss and rainfall properties and vegetation characters and to determine the dominant factors affected, (ii) the effect of rainfall interception on energy flux and mass transfer, and (iii) the dynamics of vertical energy flux under the forest and grass land. Rainfall interception was 36.34% of gross rainfall in 200 events, Depth rainfall and LAI factors had strong effects on rainfall interception.  The relationships could be expressed as Ic = 0.980+0.239P+0.035LAI (R2 = 0.78).  The output of this equation was compared with Gash model and the observation value showed that deviation of the equation was 1% and less than Gash model, so that equation gave as good result as Gash model gave.  By considering the data requirements and calculation procedures it was concluded that this equation is applicable for interception prediction.  Land use type had effects on radiative and energy balance.  Net radiation (Rn) in the forest was 10.66 MJ/m2/day and higher than in the grass land where incident global radiation was similar.  Vertical latent heat flux in the forest was 9.53 MJ/m2/day or 89.40% Rn in rainy day and 8.41 MJ/m2/day or 74.56% Rn in dry day, on the other hand, in the grass land, sensible heat flux was higher than latent heat flux of all weather condition.  Direct effect of rainfall interception on energy flux and mass transfer it is needed latent heat about 9.0 MJ/m2/rainy day to evaporate the rain intercepted 3.69 mm/rainy day.  Effect of rainfall interception had positive correlation with  latent heat flux and the negative correlation  with sensible heat flux.   Key words: interception, energy, mass and tropical rainforest
ANALISIS PENGARUH DIFERENSIASI, PROMOSI DAN POSITIONING TERHADAP KEPUTUSAN PEMBELIAN (Studi pada Pelanggan Sepeda Motor Merek Honda di Kota Tangerang) Abdul Rauf
JMB : Jurnal Manajemen dan Bisnis Vol 7, No 1 (2018): JMB : Jurnal Manajemen dan Bisnis
Publisher : Universitas Muhammadiyah Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31000/jmb.v7i1.1565

Abstract

The purpose of the study is to analyze how much influencedifferentiation, promotion and positioning on purchase decision ofHonda motorcycles customers. The sample of research is 100 Hondamotorcycles customers in Tangerang. The sampling technique usesconvenience sampling. Data collection using questionnaire. The methodused in this research is the method of verification to determine theeffect of differentiation, promotion and positioning on purchase decision.The test statistic used is designing the structural model, designing ameasurement model, construct the path diagram, test the model fit.Suitability test structural models and hypotheses using software LISREL8.80. The results showed that differentiation and promotion have asignificant effect on customer satisfaction, whereas positioning have nosignificant effect on purchase decision.
Correlation of streamflow and sediment concentration at upstream and downstream Padang Watershed Kemala Sari Lubis; Erwin Masrul Harahap; Abdul Rauf; Zainal Arifin Hasibuan
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 2 (2013): Engineering
Publisher : Syiah Kuala University

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Abstract

Sediment concentration affected b streamflow at river body. This research was conducted to study correlation between streamflow and sediment concentration at upstream and downstream Padang watershed on July until December 2013. The research was conducted by using survey method at two outlet of Padang watershed were Padang sub watershed and Padang Hilir sub watershed. Sampling of water at two (2) outlets were conducted at stream surface by using depth intergrating suspended sediment sampler technique at three (3) points of river body. Sampling waters conducted at two times that were after rainand no rain. Sediment concentration (Cs) calculated by Cs = (G2 – G1) / V equation. Streamflow (Q) calculated by multiplying velocity and wide of river by Q = A x V equation. The results showed that no correlation between streamflow and sediment concentration at upstream when no rain (Cs = 0,0007 +0,0412 Q; R2 = 0,43) and at downstream when no rain (Cs = 0,0002 Q + 0,07157; R2 = 0,057). There were correlation between streamflow and sediment concentration at upstream after rain (Cs = 0,00041 Q +0,0611; R2 = 0,88) and at downstream after rain (Cs = 0,00015 Q + 0,03293; R2 = 0,9).
Perbaikan Sifat Tanah Kebun Kakao pada Berbagai Kemiringan Lahan dengan Menggunakan Teknik Biopori dan Mulsa Vertikal Rina Maharany; Abdul Rauf; T. Sabrina
Jurnal Ilmu Pertanian KULTIVAR Vol 5, No 2 (2011)
Publisher : Jurnal Ilmu Pertanian KULTIVAR

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Abstract

Pengelolaan limbah tanaman kakao masih belum ditangani dengan tepat, salah satu upaya pengelolaan yang tepat dalam pengelolaan serasah kakao adalah dengan membenamkannya ke dalam tanah agar terjadi percepatan pelapukan (secara biopori dan mulsa vertikal) dan memberikan kontribusi terhadap perbaikan dan kesuburan sifat tanah. Tujuan penelitian ini adalah untuk mengevaluasi teknik yang paling tepat dilakukan dalam penempatan serasah kakao terhadap perbaikan sifat tanah di kebun kakao, dan untuk mengevaluasi pengaruh kemiringan lahan terhadap sifat tanah di perkebunan kakao, untuk mengevaluasi interaksi antara penempatan serasah kakao dan kemiringan lahan terhadap sifat tanah di perkebunan kakao. Metoda penelitian yang digunakan adalah Rancangan Petak Berjalur (Strip Plot Design) dengan 3 (kali) ulangan. Faktor pertama adalah kemiringan lahan yaitu lahan datar, lahan landai dan lahan miring. Faktor kedua adalah penempatan serasah kakao yaitu tanpa pemberian mulsa (kontrol), penempatan serasah secara biopori, dan penempatan serasah secara mulsa vertikal. Hasil penelitian menunjukkan bahwa perlakuan penempatan serasah kakao berpengaruh nyata terhadap perbaikan sifat tanah dikebun kakao terutama penempatan serasah kakao secara mulsa vertikal. Perlakuan kemiringan lahan berpengaruh nyata terhadap sifat tanah kebun kakao, yang lebih baik adalah pada kemiringan lahan datar. Interaksi antara perlakuan penempatan serasah kakao dan kemiringan lahan berpengaruh nyata terhadap perbaikan sifat fisik, sifat kimia, dan sifat biologi tanah di kebun kakao. Kata kunci: biopori, mulsa vertikal, sifat fisik, kimia, biologi tanah
Efek Pemberian Kompos Limbah Padat Pengolahan Minyak Nilam dan Pupuk Fosfat terhadap Tanaman Nilam (Pogostemon cablin Benth.) Adei Johan M Banurea; B. Sengli Damanik; Abdul Rauf
Jurnal Ilmu Pertanian KULTIVAR Vol 4, No 2 (2010)
Publisher : Jurnal Ilmu Pertanian KULTIVAR

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Abstract

Pengujian penggunaan kompos limbah padat pengolahan minyak nilam dan pupuk fosfat terhadap pertumbuhan dan produksi nilam (Pogostemon cablin Benth) di Kabupaten Pakpak Barat. Nilam ialah salah satu tanaman industri yang memiliki pelung dan potensi untuk dikembangkan sebagai komoditas unggulan daerah. Informasi pemupukan dan pemanfaatan limbah menghasilkan minyak nilam sampai saat ini masih sangat terbatas. Tujuan penelitian adalah untuk mengetahui dosis kompos limbah padat penyulingan minyak nilam dan pupuk fosfat yang tepat bagi pertumbuhan dan produksi nilam di Kabupaten Pakpak Barat. Penelitian ini dilaksanakan pada bulan Maret 2010 sampai Agustus 2010 di Desa Kaban Tengah, Kecamatan Sitellu Tali Urang Jehe, Kabupaten Pakpak Barat, Propinsi Sumatera Utara.  Metode penelitian yang digunakan adalah Rancangan Acak Kelompok (RAK) Faktorial dengan 2 faktor yaitu : Perlakuan taraf kompos limbah padat pengolahan minyak nilam 0 ton/ha, 10 ton/ha, 20 ton/ha, 30 ton/ha dan perlakuan taraf pupuk fosfat 0 kg/ha, 50 kg/ha, 100 kg/ha, 150 kg/ha, 200 kg/ha. Dari hasil penelitian menunjukkan bahwa bobot kering daun yang merupakan parameter produksi tanaman nilam terbaik dihasilkan oleh perlakuan 30 ton/ha kompos limbah padat pengolahan minyak nilam dan 50 kg/ha pupuk fosfat, tetapi tidak berbeda nyata dengan perlakuan 20 ton/ha kompos limbah padat pengolahan minyak nilam dan 10 kg/ha pupuk fosfat. Penggunaan kombinasi perlakuan meningkatkan produktivitas tanaman dan kadar patkouli alkohol. Kata kunci: Pogostemon sp, limbah, pemupukan, dan Kabupaten Pakpak Barat.
PENDUGAAN CADANGAN KARBON PADA TEGAKAN AGROFORESTRI (STUDI KASUS DI DESA PARBABA DOLOK Lambok M. Siallagan; Rahmawaty Rahmawaty; Abdul Rauf
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Changes in landuse and land cover change through forest conversion is the caused of global warming. Due to the climate change, agroforestry systems is estimated to have a high potential for carbon sequestration in the atmosphere. Agroforestry systems contribute to reducing the increase in atmospheric CO2 and other greenhouse gases by increasing carbon in the soil and reduce the pressure for forest clearing, where the carbon comes from CO2 is taken up by plants and stored in the form of biomass. This study aimed to quantified the carbon content and to maped the distribution of carbon in agroforestry stands in Parbaba Dolok Village using data of remote sensing. Calculation of carbon stocks used non-destructive (allometric method).  Vegetation types that exist in distribution of land agroforestry in Parbaba Dolok Village are kopi, coklat, pinus, nangka dan durian. The amount of carbon stocks in agroforestry stands in Parbaba Dolok Village was 337,461 ton/ha. Differences in carbon content acquistion in this area was influenced by vegetation density, diversity of size, and distribution of vegetation density.Keywords: Agroforestry, Carbon Stock, Biomass
Pendugaan Cadangan Karbon Above Ground Biomass pada Taman Kota Ahmad Yani di Kota Medan Novita Ariani Sitorus; Rahmawaty Rahmawaty; Abdul Rauf
Peronema Forestry Science Journal Vol 3, No 2 (2014): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Global warming is the main enviromental problems of this millennium. Carbon dioxide (CO2) is the main cause for global warming. Green open space such as urban park play a role in mitigating global warming in urban area   because the vegetation that is capable to absorb CO2 from the atmosphere through photosynthesis. This study aimed to calculate the carbon stock in all types of vegetation in Urban Park Ahmad Yani. The research was conducted since January until May 2013. The research was conducted at Ahmad Yani Urban Park. The introduction of plants species  and measurements had taken by census method and the method of carbon stock data counting was using non destructive sampling, namely the allometric model. The results showed that the value of carbon stock in Urban Park Ahmad Yani is 61,48555 ton/ha.Key words: urban park Ahmad Yani, carbon stock, above ground biomass
Evaluation of Land Capability for Forest Trees Species and Multi Purpose Trees Species in Tuntungan Sub-distric, Medan City Elvira Sihotang; Rahmawaty Rahmawaty; Abdul Rauf
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Currently, there is a tendency to use the land for the benefit of the economy , which could increase income. Where, land use based-on market price, led to alternation of type of crops grown. Planning of the use of land should focus on balance and environmental sustainability. The purpose study was to evaluate the ability of a class of land for forest plants and multi trees species in the district multipurpose in Medan Tuntungan sub-distric. Matching method and Geographic Information Systems was used to evaluate the study. There were 9 unit of lands which the land capability classification was dominated by class I with a limiting factor to the erosion hazard, suggesting that it was necessary to the improvement of land that paralled to contour planting, terracing, and planting land cover . Land units VII and IX was the most land units inappropriate. This land units should be established as a natural protected area because the slopes are difficult to manage . Keywords: GI, Land capability, Medan Tuntungan Sub-distric
Co-Authors Adei Johan M Banurea Adriman Adriman Afi Nursafingi Agustoni Tarigan Aiyen Tjoa Angkasa Putra Anis Nurwidayati Arlen Hanel Jhon B. Sengli Damanik Badrul Ainy Dalimunthe Bejo Slamet Benny Hidayat C. Kusmana Dea Kartika Br Pinem Delvian Delvian Deni Elfiati Dewi Fortuna Ayu Eli Nurlaela Elvira Sihotang Eni Sumiarsih ERWIN MASRUL HARAHAP ERWIN NYAK AKOEB Fitra Syawal Harahap G. Gravenhorst H. Pawitan Hawati Hawati Hendra Pratama Herianto Suriadin Hidayat Pawitan Hilwa Walida Imanuela I. Pertiwi Ismayudin Yuliyzar Juliana Epesus Simarmata Junus Widjaja Kamil Yusuf Kemala Sari Lubis Laksono Trisnantoro Lambok M. Siallagan Larasati, Rakhma Fitria Leonardo Taruk Lobo Lipinus Sembiring Made Mahendra Jaya Mariani Sembiring Marisi Intan Retno Widia Siahaan Muhamad Faozan Muhammad H. Fattah Nasrun Nurma Nofriyanto Pakolo Novita Ariani Sitorus Parlin Hotmartua Putra Pasaribu R Rahmawaty Rahmawaty Rahmawaty Rina Maharany Rosmidah Hasibuan salman alfarisi Sarifah Aini Shanti Desima Simbolon Simon Haholongan Sidabuke Sindy Sella Rukmi T Sabrina T. Alief Aththorick T. June T. Sabrina Tania June USMAN PATO Widiyasari Widiyasari Zainal Arifin Hasibuan Zulkifli Nasution