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PREDIKSI EROSI TANAH DI DAS (DAERAH ALIRAN SUNGAI) PANEKI KECAMATAN BIROMARU KABUPATEN SIGI Kias, Muhamad Fadli; Ramlan, Ramlan; Zainuddin, Rahmat
AGROTEKBIS Vol 4, No 6 (2016)
Publisher : AGROTEKBIS

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Abstract

The aims of this study were to predict soil erosion and to determine erosion threat index occurred in the Paneki watershed, Pombewe village Biromaru district Sigi Regency, Central Sulawesi. This study contributed as a source of information for the development of land use management as well as conservation of soil and water. Furthermore, it was important to complete a number of soil physical properties. The method used in this study was descriptive explorative by conducting survey in the research site, followed by primary and secondary data collection. In this study, it was required slope class maps, soil maps and land use maps application using ArcGIS 10.0 for obtaining four (4) land units, namely land, secondary forest, mixed farms, fields and cocoa plantations. Results of this study indicated that the physical characteristics of soil in some land use vary greatly with slow to moderate permeability, soil texture dominated by sandy loam and loam fractions. Both bulk density and C-organic content were high. Prediction of soil erosion rate using the USLE (Universal Soil Loss Equation) formula indicated that erosion threat index occured in Paneki watershed was classified at low to moderate levels with the average number of total allowable erosion was 74.12 tons ha-1 yr-1.
EVALUASI EROSI PADA BERBAGAI PENGGUNAAN LAHAN DI DAS TAWAELI KECAMATAN PALU UTARA, KOTA PALU Wardana, Suci; Ramlan, Ramlan; Rahman, Abdul
AGROTEKBIS Vol 5, No 3 (2017)
Publisher : AGROTEKBIS

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Abstract

This study aims to determine the index of erosion in different land uses in the watershed Tawaeli North Palu subdistrict, Palu. The usefulness of this research is as a source of information for the various parties in relation to land resources management policy, It is also expected to be useful as reference data for further research. The research was conducted from October to December 2015, held in DAS Tawaeli, North Palu subdistrict, Palu and Laboratory of Soil Science, Faculty of Agriculture, University Tadulako. These results indicate At shrub land and cacao plantations have erosion hazard index values are relatively low (<1) so no need for soil conservation measures. Erosion hazard index value (> 1) and is classified clove plantations are on land, in value of 1.52, 1.83 and 1.94. An erosion hazard index value greater than 1 is necessary to soil conservation measures such as contour planting, terracing, and the selection of appropriate plant cover. Key Words : Erosion hazard index, Plantation Cocoa and Plantation Cloves, shrublands.
PREDIKSI LAJU EROSI PADA PENGGUNAAN LAHAN BERBEDA DI DAERAH ALIRAN SUNGAI (DAS) KAWATUNA PROPINSI SULAWESI TENGAH A. Lanyala, Andi Aghir; Hasanah, Uswah; Ramlan, Ramlan
AGROTEKBIS Vol 4, No 6 (2016)
Publisher : AGROTEKBIS

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Abstract

This study aims to predict the magnitude of soil erosion rate and erosion hazard index at Kawatuna watershed in Central Sulawesi. The research will contribute information to the government in relation to land-use policies and soil conservation measures. Slope grade map, soil map and land use mapwere overlaid with ArcGIS 10.0, resulted to eleven units of land use include forest land, shrubs, paddy fields mixed farms and settlements. Erosion was occurred at all units of land use except in residential type. The field survey was conducted at seven units of land use to observe the slope length, slope, vegetation dominant, and check those units whether still have potential to practise long-term farming management. Soil sampling is done randomly on each unit of land, three samples were taken from each unit namely disturbed and un-disturbed sampling Universal Soil Loss Equation (USLE) was used to predict the soil erosion rate. The results showed the erosion that occurs at the watershed Kawatuna is classified at low to moderate level. Low erosion occurs at wetland and forest and the moderate happens at mixed garden, shrub land, and fields. The dominant factor that caused erosion in this region is ground erovisity, followed by crop management and conservation measures.Key Words: Erosion Prediction, Kawatuna Watershed, land use, USLE.
SIFAT FISIK TANAH MINERAL DAN GAMBUT DI AREAL PERKEBUNAN KELAPA SAWIT DI KECAMATAN PETASIA TIMUR KABUPATEN MOROWALI UTARA Amrin, Amrin; Ramlan, H.; Rajamuddin, Ulfiyah A.
AGROTEKBIS Vol 5, No 6 (2017)
Publisher : AGROTEKBIS

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This study aims to determine the physical properties of mineral soil and peat soil in the area of oil palm plantations. This study used survey method directly at the test site and proceed it with sampling for material analyzes in laboratories. Soil analyzes carried out in laboratories of Soil Science, Faculty of Agriculture, University of Tadulako. Research conducted on 1st October to 15th January 2016. The determination of soil sampling locations for material analysis in laboratory determined intentionally (purposive sampling) at 2 units land. Soil sampling conducted in block 3 and block 9 for mineral soil. For peat soil contained in block 20 and block 24. All four blocks have the physical properties vary, bulk density is very low to moderate, permeability fast to quick fast, porosity good to porous, aggregate less steady to no steady.  This is because the soil was so rooted therefore affect during sampling process. Keywords : Mineral soil, Oil Palm, physical properties, peat soil.
IDENTIFIKASI SIFAT FISIK TANAH ALIH FUNGSI LAHAN HUTAN MENJADI PERKEBUNAN KAKAO (Theobroma cacao L.) DI DESA PARIGIMPU’U KECAMATAN PARIGI BARAT KABUPATEN PARIGI MOUTONG Jasmin, Sutrisno; Ramlan, Ramlan; Monde, Anthon
AGROTEKBIS Vol 5, No 5 (2017)
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Abstract

This study aims to determine the physical properties of the soil to convert forest into plantations of cacao (Theobroma cacao L.) in the village of Parigimpuu District of West Parigi district, Parigi Moutong. Soil analysis carried out in the Laboratory of Soil Science Unit of the Faculty of Agriculture, University Tadulako. The method used in this research field survey by reviewing and determining the location and make the determination of the location of the observation sample points on each land use (forests and cacao plantations) and followed by soil sampling to analysis in the laboratory. Soil sampling is not intact with depth (0-20) cm of topsoil and soil intact by using the sample ring. On forest land conducted soil sampling at three different points, each point in kompositkan on the ground is not intact and cocoa land in 3 different locations, where the first location has 3 points, so that the number of soil samples intact gained as much as 12 samples and the land is not intact as much as 3 samples. The results showed changes in soil physical properties of each land use (forests and cacao plantations) Bulk Density varies greatly with relatively mild, moderate and severe. Permeability fast to very fast. Porosity from bad to good. Soil texture on forest land dominated sand fraction, relatively low organic C difference causes         a change in the physical properties of the soil. Key Words: Forest land, Cocoa land, Soil Physical Properties.
BEBERAPA SIFAT KIMIA TANAH LAHAN PERKEBUNAN CAMPURAN BEKAS LAHAN PERSAWAHAN DI KELURAHAN PANAU KECAMATAN TAWAELI Ikhsan, Moh.; Ramlan, Ramlan; Rajamuddin, Ulfiyah A.
AGROTEKBIS Vol 6, No 1 (2018)
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The purpose of this research was to observe of soil chemical properties of paddy land which use changed into a mixed plantation at Panau Village Tawaeli District. Soil analysis was carried out at the Laboratory of Soil Science Unit of the Faculty of Agriculture, Tadulako University. The method used in this research is a field survey by reviewing and determining the location of sample observation point on each land use (paddy field and mixed garden) and continued with take the undisturb soil sampling with depth (0-20) cm from  Top soil using ground drill. In the mixed garden area, samples were taken in 4 different locations and paddy fields in 4 different locations, so that the total number of composite soil samples were 8 samples. The results showed that the changes in soil chemical properties on each land use (paddy fields and mixed garden land) vary widely with slightly acid pH to slightly alkalis. C-Organic high, to very low. N-total is moderate to very low. P-total is high to moderate. K-total is high, to very low. CEC is high, to very low. Differences place cause changes in soil chemical properties. Keywords : Soil Chemical Characteristics, Paddy Land And Mixed Garden Lands
PREDIKSI EROSI PADA BEBERAPA PENGGUNAAN LAHAN DI DTA DANAU LINDU SUB DAS PALU PROVINSI SULAWESI TENGAH Ikra, Ikra; Ramlan, Ramlan; Isrun, Isrun
AGROTEKBIS Vol 6, No 4 (2018)
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The research was conducted in Lake Lindu Watershed Sub DAS Palu of Lindu Subdistrict of Sigi Regency and soil analysis was carried out in Soil Science Laboratory Laboratory of Tadulako University. The purpose of this study is to predict the rate of soil erosion and determine the index of erosion hazard in some land use in Lake Lindu watershed area Palu Sub-waters of Central Sulawesi Province. The benefits of this research are as a source of information for the government in general and provide information on the size of the erosion hazard index on some agricultural and non-agricultural land use so that it can be used sustainably. This research method was done by using survey method, soil sampling, soil anilisis, type and source of data and collect data through observation and interview. Data processing to obtain the result of erosion prediction is processed by using USLE equation (Universal Soil Loss Equation) by entering primary data and secondary data into USLE equation that is long and slope factor, Plant Management Factor and Soil Conservation Factor (CP), tolerated Erosion (TSL), and the Erosion Hazard Index (EHI). Based on the research conducted in Lake Palu Lake Basing Sub Palu about the prediction of erosion on some land use it was found that the erosion hazard that occurs in some units of land in Lake Lindu watershed Palu sub watershed included in the criteria of high, medium to low. The average value of erosion thatwas tolerated 17.07 ton-1year-1. The rate of erosion in Lake Lindu Watershed Palu is dominant due to soil erodibility, crop management and conservation measures. Conservation actions that need to be done are to maintain the existing vegetation, the use of plant remains as mulch, the use of bench terraces, guludan, reforestation and land evaluation.
PENGARUH PENAMBAHAN NIB KAKAO TERHADAP KARAKTERISTIK FISIK, KIMIA DAN ORGANOLEPTIK SERTA AKTIVITAS ANTIOKSIDAN COKELAT BATANG Ramlan, Ramlan
Jurnal Sains dan Teknologi Pangan Vol 4, No 1 (2019): Jurnal Sains dan Teknologi Pangan
Publisher : JURUSAN ILMU DAN TEKNOLOGI PANGAN, UNIVERSITAS HALU OLEO

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Abstract

ABSTRACT                This study aimed to analyze the effect of cocoa nib addition on the physical, chemical and organoleptic characteristics and antioxidant activity of chocolate bars. This study used a completely randomized design (CRD) with cocoa nib concentration of 0% (P0/control), 4% (P1), 7% (P2), 10% (P3), and 13% (P4). The results show that most preferred product was P1 (4% cocoa nib) with average preference scores of color, aroma, texture, and taste reached 4.40 (like), 3.90 (like), 4.37 (like), and 4.40 (like), respectively. The stability, fat blooming, and the moisture content of P1 were similar to the control (P0) as it started to soften after 1 hour at 370C. The fat blooming occurred after one week of storage at 30-330C and it had the moisture content of 2.05%. However, P1 contained higher levels of fat, protein, and antioxidant activity than controls, which reached 46.56%, 19.17%, and 18.69%, respectively. The results show that the addition of cocoa nib did not affect the quality of chocolate bars. Keywords: cocoa nib, chocolate bar, organoleptic, antioxidant activity. ABSTRAKPenilitian ini bertujuan untuk mengetahui pengaruh penambahan nib kakao terhadap karakteristik fisik, kimia dan organoleptik serta aktivitas antioksidan cokelat batang. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan pembuatan cokelat batang 100%sebagai P0 (kontrol) = nib kakao 0%, P1 = nib kakao 4%, P2 = nib kakao 7%, P3 = nib kakao 10%, P4 = nib kakao 13%. Hasil penelitian yang diperoleh menunjukkan bahwa perlakuan terpilih produk cokelat batang yaitu P1 (nib kakao 4%) dengan rata-rata kesukaan terhadap warna sebesar 4.40 (suka), aroma sebesar 3.90 (suka), tekstur sebesar 4.37 (suka), rasa sebesar 4.40 (suka). Adapun stabilitas, fat blooming dan kadar air cokelat batang P1 mirip dengan kontrol (P0), dengan stabilitas menunjukan mulai agak lunak setelah 1 jam di suhu 370C, mengalami fat blooming setelah penyimpanan 1 minggu di suhu 30-330C dan kadar air sebesar (2.05%). Akan tetapi, P1  mengandung lebih tinggi kadar lemak, protein, dan aktivitas antioksidan dibandingkan kontrol. Kandungan lemak, protein, dan aktivitas antioksidan P1 berturut-turut adalah 46.56%, 19.17%, dan 18.69%. Hasil penelitian ini menunjukkan penambahan nib kakao tidak mempengaruhi kualitas coklat batang.Kata kunci: Nib kakao, cokelat batang, organoleptik, aktivitas antioksidan.
PENGARUH PENAMBAHAN NIB KAKAO TERHADAP KARAKTERISTIK FISIK, KIMIA, ORGANOLEPTIK SERTA AKTIVITAS ANTIOKSIDAN COKELAT BATANG Ramlan, Ramlan; tamrin, tamrin; Asyik, Nur
Jurnal Sains dan Teknologi Pangan Vol 3, No 5 (2018): JURNAL SAINS DAN TEKNOLOGI PANGAN
Publisher : JURUSAN ILMU DAN TEKNOLOGI PANGAN, UNIVERSITAS HALU OLEO

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (473.595 KB) | DOI: 10.33772/jstp.v3i5.5220

Abstract

ABSTRACT This study aimed to determine the effect of addition of cacao nib to physical, chemical, organoleptic characteristics and antioxidant activity of chocolate bar. This study used a completely randomized design (CRD) with making chocolate bars 100% as P0 (control) = cocoa nib of 0%, P1 = cocoa nib of 4%, P2 = cocoa nib of 7%, P3 = cacao nib of 10% and P4 = cocoa nib of 13%. The results showed that the chosen treatment of chocolate bar products was P1 (4% cocoa nib) with an average preference for color, aroma, texture and taste were 4.40 (like), 3.90 (like), 4.37 (like) and 4.40 (like), respectively. The P1 chocolate sample had fat blooming after 1 week of storage at 30-33°C and a moisture content of 2.05%. However, P1 had higher levels of fat, protein and antioxidant activity than controls. Fat content, protein content and antioxidant activity of P1 were 46.56%, 19.17% and 18.69% respectively. The results of this study indicated the addition of cacao nib does not affect the quality of the chocolate bar. Keywords: Cocoa Nib, chocolate bar, organoleptic, antioxidant activity. ABSTRAK Penilitian ini bertujuan untuk mengetahui pengaruh penambahan nib kakao terhadap karakteristik fisik, kimia, organoleptik serta aktivitas antioksidan cokelat batang. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan pembuatan cokelat batang 100% sebagai P0 (kontrol) = nib kakao 0%, P1 = nib kakao 4%, P2 = nib kakao 7%, P3 = nib kakao 10%, P4 = nib kakao 13%. Hasil penelitian yang diperoleh menunjukkan bahwa perlakuan terpilih produk cokelat batang yaitu P1 (nib kakao 4%) dengan rata-rata kesukaan terhadap warna, aroma, tekstur dan rasa sebesar 4.40 (suka), 3.90 (suka), 4.37 (suka) dan 4.40 (suka). Sampel P1 cokelat mengalami fat blooming setelah penyimpanan 1 minggu di suhu 30-330C dan kadar air sebesar 2.05%. Akan tetapi, P1 mengandung kadar lemak, protein, dan aktivitas antioksidan lebih tinggi dibandingkan kontrol. Kandungan lemak, protein, dan aktivitas antioksidan P1 berturut-turut adalah 46.56%, 19.17% dan 18.69%. Hasil penelitian ini menunjukkan bahwa nib kakao tidak mempengaruhi kualitas coklat batang. Kata kunci: Nib kakao, cokelat batang, organoleptik, aktivitas antioksidan.
TINGKAT ERODIBILITAS TANAH PADA BEBERAPA TINGKAT KEMIRINGAN LAHAN DI DESA LABUAN TOPOSO KECAMATAN LABUAN KABUPATEN DONGGALA Kalaati, Ismail; Ramlan, Ramlan; Rahman, Abd.
AGROTEKBIS Vol 7, No 2 (2019)
Publisher : AGROTEKBIS

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Abstract

This study aimed at determining erosion rate under several lands with different slopes in Labuan village, Toposo sub-district of Donggal district. This research was expected to produce information that could be used as consideration for achieving optimal plant yield. It was conducted from November to December 2016. Soil samples were analyzed in the Soil Laboratory of Agriculture Faculty Tadulako University of Palu. Survey was done on each land unit resulting from overlaying topography map and land use map. Soil samples for each land unit were determined purposively. Highest erosion rate of 0.61 ton/ha/yr categorized as high was found in cacao plantation of 15-25% slope whereas lowest of 0.32 ton/ha/yr categorized was in cacao plantation of 8-15% slope. Lack of organic matter in this cacao plantation is the main cause of soil erosion.
Co-Authors A. Lanyala, Andi Aghir Abd. Rahman Abdul Majid Achmad Subhan Adi Ismawadi, Adi Ismawadi Agus Priyadi Ahmad Aminuddin Bama, Ahmad Aminuddin Akhmad Aminuddin Bama, Akhmad Aminuddin Akmal Johan Al Arandi, Tyas Ali Rahmin, Wulan Amelia, Rezi Amijaya, Hasanah Tisna Amrin Amrin Anatami, Darwis Anggraeny, Rini Anthon Monde Aries, Arni Armaini, Sri Asliani, Asliani Asma Asma Asnizar, Andi Asri Asri B.Y. Eko Budi Jumpeno Bambang Santoso Batubara, Maryam Cepi Hidayat, Cepi Hidayat Dedi Fariadi Dewi, Agustina Kusuma Dharma, Dinda Farahdilla Dianto, Aris Dimas, Rifqy Duma, Tulus Na Dwi Sartika, Dwi Elis Halimah, Elis Halimah Endang Supiani, Endang Supian Erick, Benni Erlina Erlina Erlindawaty, Erlindawaty Erwin Asmadi Erwisnyahbana, T. Faisal Riza, Faisal Fajar, Ganjar Nurul Farid Wajdi Fauzi, Nanang Fauziah Fauziah Febriangga Harmawan, Febriangga Febrianingsih, Febrianingsih Fhadilla, Annisa Intan Firman Firman Firmansyah, Okky Agassy Firnandes, Banokta Fitri, Fikriya Aniqa Fitriani, Mita Guntur Cahaya Kesuma Habib Muharry Yusdartono Hanafiah Haniarti, Haniarti Harisman Harisman, Harisman Hermawan, Febriangga Hutajulu, Yosefa Natasia Melania Br Ikhsan, Moh. Ikra, Ikra Intan Rahmawati Irpan Ripa’i Sutowo Isbandi Isbandi Isroani, Farida Isrun Isrun Jan Setiawan Jannah Nasution, Riska Jasmin, Sutrisno Julian, Farhan June Mellawati Kalaati, Ismail Khosiin, Khosiin Kias, Muhamad Fadli Kurniawan, Roy Kuswandi, Wawan Lafira, Lafira Leisthari, Fepi Luthfi Ichsan Syam, Muhammad M, Farhanah Fitria Makhrajani Majid Marlina Marlina Masno Ginting Masrianih Mega wati, Mega Melinia, Luh Ayu Mochammad Imron Awalludin MT, Ezwarsyah Muchtarom Muchtarom, Muchtarom Muftia, Nisaul Muhamad Rahmatuloh, Muhamad Rahmatuloh Muhamad, Fitra Muhammad Adli, Muhammad Muhammad Aridan Muhammad Ikhwanus Munthe, Abdurrahman Hidayah Mustari Mustari Nacjmi, Nurul Yulianti Naibaho, Marzuki Nanik Indayaningsih Nasution , Umar Nasution, Khairil Azmi Nasution, Riska Jannah Nasution, Umar Naufal Syahrul Anwari, Naufal Syahrul Anwari Novita Novita Novyar Satriawan Fikri, KMS Nur Asyik, Nur NUR FITRIANI Nur Rahmah Hidayati, Nur Rahmah Nurhidayah Nurhidayah Nurnazli Nurnazli Purnaningsih, Putri Puspita, Endah Putri, Nur Kemala Putriyanti, Selvi R, Dony. Rafli, M. Rahman, First Riyatna Rahmani, Nur Ahmadi Bi Rahmat Zainuddin, Rahmat Rahmi, Atikah Rahmin , Wulan Ali Rahmin, Wulan Ali Raihana, Esti Ratri, Arum Ratnaning Reza, Muhammad Aulia Rudi Santoso, Rudi S, Herman. S, Zazirah S., Zazirah Salma Salma Salsabila, Balqis Sari, Fadilah Permata Sari, Fadillah Permata Sigit Hardiyanto Simon Simon Suardi Zain, Suardi Subagja, Roni Ilham Sulthan Syahril Supardi Supardi Sutowo, Irpan Ripa’i Syahbana, Tengku Erwin SYAHRIAL SYAHRIAL Syahrul Humaidi, Syahrul Syam , Muhammad Luthfi Ichsan Syam, Muhammad Luthfi Ichsan Tamaulina Br Sembiring Tamrin Tamrin Tang, Jusman Teuku Multazam Trilia, Irda Triono Eddy Turu, Martinus Randi Ulfiyah A. Rajamuddin Ulya, Syarifatul Usman Usman Uswah Hasanah Utama, Tiara Hardyanti Violensy, Cahyaning Wardana, Suci Yanto, Edy Sudaryanto Yohanes Edi Gunanto Zaharah, Rita Zambak, Muhammad Fitra Zazirah S., Zazirah S. Zebua, Tresya Millerezki Zulfiyanda, Zulfiyanda