Jurnal Manajemen Sumberdaya Lahan
Not a member yet
59 research outputs found
Sort by
Analisis Kriteria Kesesuaian Lahan Terhadap Produksi Kakao Pada Tiga Klaster Pengembangan di Kabupaten Pidie
No full textAnalysis of Land Suitability Criteria for Cocoa Production of Three Cluster Development in Pidie DistrictAbstract. Development of cocoa in Pidie District is divided into three clusters, namely Cluster Padang Tiji, Cluster Keumala and Cluster Tangse. This study was aimed at the analysis of land suitability for cocoa in order to understand relationships between characteristics of the land and production and fat content of cocoa and factors that influence it. Method used was a survey method to obtain land characteristics, management and production levels of cocoa. Land Unit Map (LUM) of each cluster was formed by overlapping maps of soil type, slope, and land use. Evaluation of land suitability on each LUM was done by suitability classification method developed by FAO. Relationships between characteristics of land and production and fat levels were analyzed using correlation analysis. Multiple linear analyses were carried out for land characteristics that significantly affect production components and fat content. The results showed that clusters of Keumala and Padang Tiji had actual land suitability classes of marginal suitable (S3), while Tangse had those of adequately suitable (S2) and marginal suitable (S3). Potential land suitability classes of Padang Tiji cluster was S3, while clusters of Keumala and Tangse were S2 and S3. Results of multiple linear regression analyses showed that there was a very close relationship (R2=0.95) between characteristics of land and production, while a close relationship (R2=0.64) between characteristics of the land and fat content. Determinants of production were altitude, slope, sand fraction, clay fraction, pH H2O, pH KCl, organic C, total N, available P, Na, Al saturation, cation exchange capacity, base saturation and salinity, while determinants of fat content were altitude, organic C, total N, available P, Ca, and Mg.Abstrak. Pengembangan kakao di Kabupaten Pidie dibagi dalam tiga klaster yaitu Klaster Padang Tiji, Keumala dan Tangse. Penelitian ini bertujuan untuk menganalisis kesesuaian lahan tanaman kakao sehingga diketahui hubungan antara karakteristik lahan dengan produksi dan kadar lemak kakao serta faktor-faktor yang mempengaruhinya. Metode yang digunakan dalam penelitian ini adalah metode survai untuk mendapatkan karakteristik lahan, tingkat pengelolaan dan produksi tanaman kakao. Satuan peta lahan (SPL) masing-masing klaster dibentuk berdasarkan tumpang tindih peta jenis tanah, peta lereng dan peta penggunaan lahan. Evaluasi kesesuaian lahan pada setiap SPL menggunakan metode klasifikasi kesesuaian lahan yang dikembangkan oleh FAO. Untuk mengetahui hubungan antar karakteristik dilakukan analisis korelasi antara karakteristik lahan dengan karakteristik produksi serta kadar lemak. Analisis linier berganda dilakukan pada karakteristik lahan yang berpengaruh nyata terhadap komponen produksi dan kadar lemak. Hasil evaluasi lahan Klaster Padang Tiji dan Keumala memiliki kelas kesesuaian lahan aktual sesuai marginal (S3) sedangkan Tangse cukup sesuai (S2) dan sesuai marginal (S3). Kelas kesesuaian lahan potensial Klaster Padang Tiji S3, sedangkan Klaster Keumala dan Tangse S2 dan S3. Hasil analisis regresi linier berganda antara karakteristik lahan terhadap produksi diperoleh hubungan yang sangat erat (R2) 0,95, sedangkan karakteristik lahan terhadap kadar lemak diperoleh hubungan yang erat (R2) 0,64. Penentu produksi adalah ketinggian tempat, lereng, fraksi pasir, fraksi liat, pH H2O, pH KCl, C-organik, N total, P tersedia, Na, kejenuhan Al, kapasitas tukar kation, kejenuhan basa dan salinitas, sedangkan penentu kadar lemak adalah ketinggian tempat, C organik, N total, P tersedia, Ca dan Mg
Pengaruh Residu Biochar dan Pemupukan NPK terhadap Dinamika Nitrogen, Sifat Kimia Tanah dan Hasil Tanaman Padi (Oryza sativa L.) Musim Tanam Ketiga
Get PDFResidual Effect of Biochar and NPK Fertilization Toward the Dynamics of Nitrogen , Soil Chemical Properties and Rice Crop in Third Season PlantingAbstract. The study includes the effect of biochar on crop residue rice has not been much done. This study aimed to determine the effect of biochar residue and NPK fertilization on nitrogen dynamics, soil chemical properties and yield of rice (Oryzasativa L.) growing season III. Experiments in stacking the group Random Design (RAK) factorial with two factors (residual biochar and fertilizer NPK) and 4 ulanga.Biochar residue consists of 2 level ie treatment without residual biochar and biochar residue treatment 10 tons ha -1.NPK fertilizer treatment consisted of 3 level that is without fertilizer NPK, NPK fertilizer 135 kg ha -1 and 270 kg NPK ha -1.The results showed that the residual biochar significantly affect N-Total soil 28 days after transplanting (DAP), N-Total plant 21 days after planting, cation exchange capacity (CEC), total grain number and yield per hectare.NPK fertilization significantly affect total plant N-45 DAP, available P-, k-available, CEC, plant height 45 DAP, 90 DAP, tiller number 28, 35 and 45 days after planting, the number of panicles / clump, the percentage of empty grain / panicle, percentage of grain containing / panicle and yield per hectare. Combination treatment residues and NPK Biochar significant effect on total plant N-45 DAP.Abstrak. Penelitian pengaruh biochar termasuk residunya pada tanaman padi sawah belum banyak dilakukan. Penelitian ini bertujuan untuk mengetahui pengaruh residu biochar dan pemupukan NPK terhadap dinamika nitrogen, sifat kimia tanah dan hasil tanaman padi (Oryza sativa L.) musim tanam III. Percobaan disusun dalam Rancangan Acak kelompok ( RAK) pola faktorial dengan dua faktor (residu biochar dan pupuk NPK) dan 4 ulangan. Residu biochar terdiri dari 2 taraf yaitu perlakuan tanpa residu biochar dan perlakuan residu biochar 10 ton ha-1. Perlakuan pupuk NPK terdiri dari 3 taraf yaitu tanpa pupuk NPK, pupuk NPK 135 kg ha-1, dan pupuk NPK 270 kg ha-1. Hasil penelitian menunjukkan bahwa residu biochar berpengaruh nyata terhadap N-Total tanah 28 hari setelah tanam (HST), N- Total tanaman 21 HST, kapasitas tukar kation (KTK), jumlah gabah total dan hasil per hektar. Pemupukan NPK berpengaruh nyata terhadap N-Total tanaman 45 HST, P-tersedia, k-tersedia, KTK, tinggi tanaman 45 HST, 90 HST, jumlah anakan 28, 35 dan 45 HST, jumlah malai/rumpun, persentase gabah hampa/malai, persentase gabah berisi/malai dan hasil per hektar. Kombinasi perlakuan residu biochar dan pupuk NPK berpengaruh nyata terhadap N-total tanaman 45 HST
Analisis Penutupan Lahan Kawasan Hutan Pada Daerah Aliran Sungai Krueng Aceh Pra dan Pasca Tsunami
Get PDFForest Land Cover Analysis of Krueng Aceh Watershed in Pre and Post-TsunamiAbstract. The objective of the study is to assess the changes of coverage of forest area, in watershed of Krueng Aceh by using GIS and remote sensing. The method used in classifying the image data is supervised classification, that is by determining the condition of the land coverage prior to its classification by the image. The pre tsunami classification of Landsat 5 image (2001) of the state-owned forest area along the watershed of Krueng Aceh shows that the land is 29375.47 ha (29.50%) of primary forest, 22140.01 ha (22.23%) of secondary forest, 26618.74 ha (26.73%) of shrubs, 21177.60 ha (21.27%) of open land, and 267.83 ha (0.27%) of water bodies. As a comparison, the post tsunami classification (2009) shows that the lands is 27892.378 ha (28.01%) of primary forest, 33537.58 ha (33.68%) of secondary forest, 16662.18 ha (16.73%) of shrubs, 21275.38 ha (21.37%) of open land, and 212.14 ha (0.21%) of water bodies. Based on this observation, the changes in land coverage of the state-owned forest area along the watershed of Krueng Aceh within the period of 2001 - 2009 is as follows: there is a reduction of 1483.10 ha (5.05%) of primary forest and 9956.56 ha (37.40%) of shrubs, while extension occurs to secondary forest and open land in the order of 11397.57 ha (51.48%) and 97.78 ha (0.46%) respectively.Abstrak. Penelitian ini bertujuan untuk mengetahui perubahan tutupan lahan kawasan hutan pada daerah aliran sungai Krueng Aceh dengan menggunakan SIG dan penginderaan jarak jauh. Metode yang digunakan dalam klasifikasi data citra adalah klasifikasi terbimbing dengan terlebih dahulu mengetahui kondisi tutupan lahan sebelum diklasifikasi terhadap citra. Hasil klasifikasi citra Landsat 5 pra tsunami (2001) pada kawasan hutan di DAS Krueng Aceh adalah hutan primer 29.375,47 ha (29,50%), hutan sekunder 22.140,01 ha (22,23%), semak belukar 26.618,74 ha (26,73%), tanah terbuka 21.177,60 ha (21,27%), dan badan air 267,83 ha (0,27%), sedangkan hasil klasifikasi citra Landsat 5 pasca tsunami (2009) adalah hutan primer 27.892,37 ha (28,01%), hutan sekunder yaitu 33.537,58 ha (33,68%), semak belukar 16.662,18 ha (16,73%), tanah terbuka 21.275,38 ha (21,37%), dan badan air yaitu 212,14 ha (0,21%). Perubahan lahan yang terjadi periode tahun 2001-2009 pada kawasan hutan di DAS Krueng Aceh yaitu terjadi pengurangan hutan primer sebesar 1.483,10 ha (5,05%) dan semak belukar sebesar 9.956,56 ha (37,40%), sedangkan penambahan tutupan lahan terjadi pada hutan sekunder sebesar 11.397,57 ha (51,48%) dan tanah terbuka sebesar 97,78 ha (0,46%)
Pemupukan KCL dan Kompos Jerami, Pengaruhnya Terhadap Sifat Kimia Tanah, Pertumbuhan dan Hasil Padi Sawah (Oryza sativa L.)
Get PDFEffects of KCl Fertilizer and Straw Compost on Soil Chemical Properties, Growth and Yield of Rice (Oryza sativa L.) Abstract: The purposes of this study were to determine effects of KCl fertilizer and straw compost on soil chemical characteristics, growth and yield of rice (Oryza sativa L.). The experiment used a factorial randomized complete block design with 3 replications. The first factor was KCl fertilizer (0, 100, 150 kg ha-1). The second factor was straw compost doses (0, 10, 20 ton ha-1). The results showed that KCl fertilizer exerted highly significant effects on C organic, N-total , P-available and CEC of soil, panicle numbers per hill and 1000 grains at moisture content of 14%, grain yield per hectare at 14% moisture content and significant effects on plant height at age 35 days after transplanting (DAT) and tiller numbers at age 25 DAT. Straw compost also exerted highly significant effects on organic-C, N-total, CEC of soil, panicle numbers per hill and grain yield per hectare at 14% moisture content and a significant effect on tiller numbers at age 35 DAT. There were significant interactions between KCl fertilizer and straw compost on soil pH, K-exchangeable, number of filled grains per panicle, percentage of empty grains per panicle. The best combination of was 100 kg KCl ha-1 and 20 tons straw compost ha-1.Abstrak: Tujuan penelitian ini adalah untuk mengetahui pengaruh pemupukan KCl dan kompos jerami terhadap sifat kimiatanah, pertumbuhan dan hasil padi sawah (Oryza sativa L.). Penelitian ini menggunakan rancangan acak kelompok (RAK) pola faktorial dengan 3 kali ulangan. Faktor pertama pupuk KCl (0, 100, 150 kg ha-1). Faktor kedua takaran kompos jerami (0, 10, 20 ton ha-1). Hasil penelitian menunjukkan pupuk KCl berpengaruh sangat nyata terhadap C-organik tanah, N-total tanah, P-tersedia tanah dan KTK tanah, jumlah malai per rumpun, berat 1000 butir gabah dan hasil gabah per hektar pada kadar air 14% serta berpengaruh nyata terhadap tinggi tanaman umur 35 HST dan jumlah anakan umur 25 HST. Dosis kompos jerami berpengaruh sangat nyata terhadap C-organik tanah, N-total tanah, KTK tanah, jumlah malai per rumpun dan hasil gabah per hektar pada kadar air 14% serta berpengaruh nyata terhadap jumlah anakan umur 35 HST. Interaksi pupuk KCl dan kompos jerami memberikan pengaruh nyata terhadap pH tanah, K-dd, jumlah gabah isi per malai, persentase gabah hampa per malai. Kombinasi dosis terbaik adalah dosis pupuk KCl 100 kg ha-1 dengan dosis kompos jerami 20 ton ha-1
Analisis Citarasa Kopi Arabika Organik pada Beberapa Ketinggian Tempat dan Cara Pengolahannya di Datararan Tinggi Gayo
Get PDFAnalysis of Taste Quality of Organic Arabica Coffee in Several Altitudes and Processing Techniques in Gayo HighlandsAbstract. In general several varieties of Arabica are cultivated at the same altitude, which cause loss of their unique flavor of Arabica Gayo Highlands. This research was aimed to find out of superior varieties of Arabica coffee with a unique flavor score at a certain altitude and specific processing technique in the Gayo Highlands. There were five varieties of Arabica coffee observed. (Borbor, Bergendal, Ateng Super, Tim-Tim and Lini-S), in four altitudes: (1. 1.000 m; 2. 1.000 -1.200 m; 3. 1.200 1.400 m; and 4. 1.400 m above sea level). A survey method with descriptive analysis was used, based on altitude and land use maps on 20 observation sites. Ideal altitude of varieties were identified as nell as soil and barriers samples were analyzed. Arabica coffee varieties was determined by cluster analysis, correlations, followed by multiple regression. Evaluation scores of flavor varieties of Arabica coffee and altitude showed that Borbor variety was suitable at altitude 1.400 above sea level, Tim-Tim 1.200 m, and Ateng super at altitude 1.200 -1.400 m above sea level. Processing method of organic Arabica coffee which produced high flavor quality (taste) was a semi wash processing. Result of multiple regression analysis showed a very close relationship between land characteristics and score flavor criteria, R2 was 0.894. Determinants of the best and unique flavor is the altitude, climate and processing of organic Arabica coffee beansAbstrak. Beberapa varietas kopi Arabika umumnya dibudidayakan dan dikembangkan pada ketinggian tempat yang sama yang menyebabkan mulai hilangnya citarasa khas (unik) kopi Arabika dataran tinggi Gayo. Penelitian ini bertujuan menetapkan varietas unggul kopi Arabika organik yang mempunyai citarasa unik pada berbagai ketinggian tempat dan cara pengolahannya. Ada lima varietas kopi Arabika, yaitu: Borbor, Bergendal, Ateng Super, Tim-Tim dan Lini-S yang diamati pada masing-masing ketinggian tempat; (1. 1.000 m, 2. 1.000 -1.200 m, 3. 1.200 -1.400 m dan 4. 1.400 m di atas permukaan laut). Metode yang digunakan adalah metode survei dengan analisis deskriptif. Berdasarkan peta ketinggian tempat, penggunaan lahan dan varietas kopi yang ditemui maka diperoleh 20 tapak pengamatan. Pada setiap tapak pengamatan dilakukan identifikasi varietas, pengambilan contoh gelondong buah kopi matang dan contoh tanah. Untuk menentukan ketinggian tempat yang ideal serta masing-masing varietas-varietas kopi Arabika dilakukan analisis gerombol, analisis korelasi antar karakteristik lahan yang dilanjutkan dengan regresi berganda. Berdasarkan hasil menunjukkan varietas Borbor sesuai pada ketinggian tempat 1.400 m, varietas Tim-Tim 1.200 m, dan Ateng Super pada semua ketinggian 1.200 -1.400 m diatas permukaan laut. Pengolahan biji kopi Arabika organik yang menghasilkan mutu kualitas citarasa yang terbaik dan khas (unik) adalah pengolahan basah cara basah. Hasil analisis regresi berganda antara karakteristik lahan dengan kriteria citarasa kopi Arabika pengolahan basah cara basah diperoleh hubungan yang sangat erat (R2) adalah 0,894. Penentu citarasa yang terbaik dan unik adalah Ketinggian tempat, iklim dan pengolahan biji kopi Arabika organik
Pengaruh Pemupukan Phosfat dan Sulfur Terhadap Pertumbuhan dan Serapan Hara Serta Efisiensi Hasil Padi Sawah (Oryza sativa l.)
Get PDFThe Influence of Phosphat and Sulfur Fertilization on Growth and Nutrient Absorption and Rice Field Yield Efficiency of Paddy (Oryza sativa L.)Abstract. This research was conducted in the Uleepulo Village, Dewantara Sub District, Aceh Utara District. This study was aimed to investigate effects of phosphorus and sulfur fertilizers and their interactions on nutrient uptake and growth and yield efficiency of paddy. Experiment was arranged in a factorial randomized complete block design 4 x 4 with 3 replications. Phosphorus fertilization consisted of 4 levels: 0, 50, 100, 150 kg ha-1. Sulfur fertilization consisted of 4 levels: 0, 40, 80, 120 kg ha-1. The results showed that phosphorus and sulfur fertilizers significantly affected paddy height at 30 and 45 day after planting, tiller numbers and productive tiller numbers. Phosphorus and sulfur fertilizers significant affected panicle length and grain numbers per panicle. Phosphorus and sulfur fertilizers did not significantly affect the number of empty grains, 1000 grain weight and yield. Phosphorus fertilizer did not significantly affect phosphorus uptake and also sulfur fertilizer did not affect sulfur uptake. However, there was an interaction between phosphorus and sulfur fertilization on phosphorus uptake. Sulfur fertilizer significantly affected phosphorus uptake. There was no interaction between phosphorus and sulfur fertilization on sulfur uptake. Phosphorus fertilization significantly affected yield efficiency, while sulfur fertilization did not significantly affect the yield efficiency. Additionally, there was no significant interaction between phosphorus and sulfur fertilization on yield efficiency of paddy.Abstrak. Penelitian ini dilaksanakan di Desa Uleepulo, Kecamatan Dewantara, Kabupaten Aceh Utara. Penelitian ini bertujuan untuk mengetahui pengaruh pemupukan Phosfat, sulfur dan interaksinya terhadap pertumbuhan, serapan hara serta efisiensi hasil padi sawah. Penelitian dilakukan dengan menggunakan rancangan acak kelompok (RAK) pola faktorial 4 x 4 dengan 3 kali ulangan. Pemupukan Phosfat terdiri atas 4 taraf yaitu: 0, 50, 100, dan 150 kg P2O5 ha-1, pemupukan sulfur terdiri atas 4 taraf yaitu 0, 40, 80 dan 120 kg S ha-1. Hasil penelitian menunjukkan bahwa pemupukan Phosfat dan sulfur berpengaruh nyata terhadap tinggi tanaman pada umur 30 dan 45 HST, jumlah anakan dan jumlah anakan produktif, panjang malai dan jumlah gabah per malai. Pemupukan Phosfat dan sulfur tidak berpengaruh nyata terhadap jumlah gabah hampa, bobot 1000 butir dan produksi tanaman padi. Pemupukan Phosfat tidak berpengaruh nyata terhadap serapan hara Phosfat tanaman padi, sedangkan pemupukan sulfur berpengaruh tidak nyata, tetapi berinteraksi nyata antara pemupukan Phosfat dan sulfur terhadap serapan hara Phosfat. Pemupukan sulfur berpengaruh nyata terhadap serapan hara Phosfat dan sulfur tetapi tidak terdapat interaksi antara pengaruh serapan hara Phosfat dan sulfur tanaman padi. Pemupukan Phosfat berpengaruh nyata terhadap efisiensi hasil, sedangkan pemupukan sulfur berpengaruh tidak nyata, tetapi tidak berinteraksi nyata terhadap efisiensi hasil tanaman padi
Partisipasi Perempuan Nelayan dalam Konservasi Wilayah Pesisir di Kecamatan Meureubo Kabupaten Aceh Barat
Get PDFABSTRAK. Penelitian ini bertujuan untuk mengkaji tingkat partisiasi perempuan nelayan dalam konservasi wilayah pesisir di Kecamatan Meureubo Kabupaten Aceh Barat serta faktor-faktor yang mempengaruhinya dalam konservasi wilayah pesisir. Analisis data menggunakan nilai skor dengan kategori rendah sampai tinggi, sedangkan Regresi Linier Berganda digunakan untuk menguji faktor-faktor yang mempengaruhi tingkat partisipasi perempuan nelayan dalam konservasi wilayah pesisir. Hasil penelitian menunjukkan bahwa tingkat partisipasi tinggi sebesar 32,5%, sedang 32,5%, rendah 35% dan secara parsial faktor-faktor yang mempengaruhi partisipasi perempuan nelayan dalam konservasi wilayah pesisir yaitu pengetahuan, pendidikan, status perkawinan, pendapatan suami dan insentif. Adapun strategi intervensi untuk meningkatkan partisipasi perempuan nelayan dalam konservasi wilayah pesisir dilakukan dengan dua cara yaitu dengan memperhatikan faktor-faktor yang mempengaruhi partisipasi serta pengembangan strategi partisipatif sesuai dengan potensi lokal.Fisherwoman Participation on Conservation of Coastal Areas in Meureubo Sub District, West Aceh DistrictABSTRACT. This study was aimed at assessments of fisherwoman participation in conservation of coastal areas in Sub District Meureubo, West Aceh, and the factors affecting woman participation in conservation of coastal areas. Data analysis used in this study was by using scores, where score one for low category, two for medium category, and three for high category, while Multiple Linear Regression was used to examine factors that affect level fisherwoman participation in conservation of coastal areas. The results showed that woman participation was categorized a low level by 35%. Partially, factors affecting woman participation in conservation of coastal areas were knowledge, education, marital status, husband income and incentive. Intervention strategies to increase woman participation in conservation of coastal areas could be done by two ways, namely by taking into account factors that affect participation and carrying out development participatory strategies appropriate to the local potentials
Kelembaban Limbah Kakao dan Takarannya terhadap Kualitas Kompos dengan Sistem Pembenaman
Get PDFAbstrak. Limbah kakao adalah bahan organik yang mampu menyediakan hara makro dan mikro untuk tanaman, di samping memperbaiki struktur tanah sehingga mempermudah pengolahan tanah. Untuk itu perlu dilakukan penelitian tentang pengaruh limbah kakao basah dan kering serta takarannya terhadap kualitas kompos dengan sistem pembenaman. Penelitian ini dilaksanakan April sampai Juli 2010, dengan menggunakan metode Rancangan Acak Kelompok pola faktorial. Jenis kulit kakao terdiri atas limbah kulit kakao basah, kering dan campuran basah kering. Takaran limbah kulit kakao terdiri atas 30, 60, dan ton ha-1. Hasil analis ragam menunjukkan bahwa, Kelembaban limbah kulit kakao hanya berpengaruh nyata terhadap parameter K2O, sedangkan parameter lainnya tidak berpengaruh nyata. Perlakuan takaran limbah kulit kakao hanya berpengaruh sangat nyata terhadap P2O5 dan K2O, sedangkan parameter lain tidak nyata. Interaksi jenis dan takaran limbah kulit kakao hanya berpengaruh nyata terhadap parameter pH dan P2O5, sedangkan parameter lainnya tidak berpengaruh nyata.Cacao Waste Measuring Influence to Quality of Compost by the Incubation SystemAbstract. Cacao waste is organic material capable to provide macro and micro nutrients for crop, besides repairing soil structure causing to tilt. For the purpose need to be done research about cacao skin measuring influence to quality of compost with masking system. This research executed April until July 201, by using completely randomized block design method with factorial. Cacao skin type is consisted: wet, drought, and mixer wet drought. Cacao skin waste measuring is consisted: 30, 60, and 90 tons ha-1. Result of manner analyst indicates that, treatment of influence cacao skin waste type only be real to K2O, while other parameter doesn't have an effect on reality. Treatment of cacao skin waste measuring only have an effect on very reality P2O5 and K2O, while other parameter not reality. Interaction of type and cacao skin waste measuring only have an effect on reality to hydrogen ion exponent parameter and P2O5, while other parameter doesn't have an effect on reality
Prediksi Erosi Padang Pengembalaan Kawasan Pengembangan Peternakan Kabupaten Aceh Besar
Get PDFAbstrak. Penelitian bertujuan untuk mengkaji tingkat bahaya erosi pada ladang pengembalaan dengan berbagai jenis hijauan pakan ternak di Kecamatan Indrapuri dan Kuta Malaka Kabupaten Aceh Besar. Metode penelitian menggunakan metode survey. Hasil penelitian menunjukkan bahwa dilokasi penelitian terdapat 10 Satuan Peta Lahan (SPL) dengan total luas areal 175,36 hektar. Erosi aktual terbesar terdapat pada SPL 4 yaitu sebesar 279,89 ton ha -1 th -1 dan SPL 6 yaitu sebesar 85,77 ton ha -1 th -1 sedangkan erosi potensial tertinggi juga terdapat pada SPL 4 yaitu sebesar 699,74 ton ha -1 th -1 dan SPL 8 yaitu sebesar 259,58 ton ha -1 th -1. Terdapat 5 (lima) tingkat bahaya erosi yaitu sangat ringan masing-masing terdapat pada SPL 5 dan 9, ringan terdapat pada SPL 1,2,3 dan 7, sedang terdapat pada SPL 10, berat terdapat pada SPL 6 dan 8, sangat berat terdapat pada SPL 4. Rumput Bracharia decumben dengan bentuk wilayah berombak sampai bergelombang terdapat bahaya erosi sangat ringan hingga ringan, rumput alam pada bentuk wilayah sama terdapat tingkat bahaya erosi ringan sampai berat. Rumput alang-alang mempunyai tingkat bahaya erosi ringan sampai berat, rumput alam dan lamtoro pada wilayah berombak mempunyai tingkat bahaya erosi ringan.Erosion Prediction on Rifle Range of Development Area in Aceh Besar DistrictAbstract. This research was aimed at profound assessment of erosion hazard levels at grazing fields with various types of forage in Indrapuri and Kuta Malaka Sub-District, Aceh Besar District. The research used a descriptive method with 5 stages, including (1) approach, (2)preparation of working maps, (3)field activities, (4)data collection, (5)analysis and tabulation of data. Results showed that there were 10 units of Land Map (LMU) existed, with a total area of 175,36 hectares at the research locations. The largest actual erosion was found in LMU 4, and LPU 6, up to 279,89 tons ha-1yr-1 and 85,77 tons ha-1yr-1, respectively. The largest potential erosion was found in LMU 4 and LMU 8, up to 699,74 tons ha-1yr-1and 259,58 tons ha-1yr-1, respectively. There existed 5 levels of erosion hazard; a very mild erosion existed in LMU 5 and 9; a mild erosion in LMU 1,2, 3 and 7; medium erosion in LMU 10, heavy erosion in LMU 6 and 8, and very heavy erosion in LMU 4. At grass of Bracharia decumben with undulate to wavy areas, there existed erosion hazard at rates of very mild to mild. At natural grass with undulate, wavy, and hilly areas, there were erosion hazard of mild to severe intensity. At coarse grass with undulate to wavy areas, there were erosion hazard at the rate of mild to heavy levels. At natural grasses and lamtoro with undulate area, the rate of erosion hazard was mild, while at elephant grass with undulate to wavy areas, the rates of erosion were mild to medium
Pertumbuhan dan Hasil Padi (Oryza sativa L.) Akibat Pemberian Arang Aktif dan Urea
Get PDFGrowth and Yield of Rice With Charcoal and UreaAbstract: The objectives of the research were to study effects of urea and charcoal on growth and yield of rice. The experiment was arranged in a factorial randomized complete block design with three replicates. Factor of urea are without urea, 100, 200, and 300 kg urea ha-1. Factor of charcoal consisted are i.e. without charcoal, 60, and 120 kg charcoal ha-1. Result showed that urea exerted highly significant effects on plant height at 30 days after transplanting (DAT), 45 DAT, at harvest, tiller numbers at 30 DAT, grain weight per plot, N-total, K-available, and exerted a significant effect on tiller numbers at 45 DAT. Charcoal exerted highly significant effects on N-total and K-available and exerted significant effects on tiller numbers at 30 DAT and C-organic. Factors of urea and charcoal interacted highly significantly on tiller numbers at 30 DAT and interacted significantly on N-total and K-available.Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh pemberian urea dan arang aktif terhadap pertumbuhan serta hasil tanaman padi sawah. Perlakuan penelitian disusun dalam rancangan acak kelompok pola faktorial dengan 3 ulangan. Perlakuan urea terdiri atas tanpa urea, 100, 200 dan, 300 kg urea ha-1. Perlakuan arang aktif terdiri dari tanpa arang aktif, 60, dan 120 kg arang aktif ha-1. Hasil Penelitian menunjukkan bahwa, perlakuan urea memberikan pengaruh sangat nyata terhadap tinggi tanaman umur 30, 45 HST dan saat panen, jumlah anakan 30 HST, berat gabah per plot. Arang aktif memberikan pengaruh sangat nyata terhadap jumlah anakan umur 30 HST. Interaksi antara kombinasi perlakuan urea dan arang aktif memberikan pengaruh nyata terhadap jumlah anakan umur 30 HST