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Potential Analysis of Rubber Smallholding Development in Mandailing Natal Regency, North Sumatera Province Siregar, Hadijah; Sitorus, Santun R.P.; Sutandi, Atang
Forum Pasca Sarjana Vol 35, No 1 (2012): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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Abstract

Development of preminent commodity of rubber is one of Mandailing Natal Regency  Government’s strategy to improve society prosperity. To support the mentioned things, this research was conducted with purpose of determining location  suitability for the development of  rubber plantation  based on land evaluation, analysing of financial and marketing feasibilities of rubber smallholding, and analysing the directive of rubber smallholding potential development in Mandailing Natal  Regency by using mapping and descriptive analysis. The  research result shows that acreage of potential area for the development of rubber plantation  in Mandailing Natal Regency is 460 849 ha (70.41%). Financially, the enterprise of rubber  smallholding in every land suitability class is feasible. The market chain of rubber in Mandailing Natal Regency  is not efficient enough. The location which is able to be recommended for the development of rubber plantation in Mandailing Natal Regency based on potential location, financially and relevant government regulations is 201 875 ha (30.84%). The performance of rubber smallholding  plantation in Mandailing Natal Regency  is influenced by agricultural extension service officer, the availability  of farmer group, rubber productivity and availability of agricultural infrastructure. Nowdays, rubber processing factory should be built in Mandailing Natal, considering that raw materials are widely available and added value will contribute for regional development.
Land Suitability Model for Curry Sutandi, Atang; Barus, Baba
Jurnal Ilmu Tanah & Lingkungan Vol 9, No 1 (2007): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Jurnal Ilmu Tanah & Lingkungan

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Abstract

Agribusiness of herbal medicine is more important in the future due to raw material pharmaceutical industry tends to usematerials naturally produced To develop herbal medicine with high quality requires the criteria of land suitability based onyield quality, which is represented by active compounds. The compounds are resulted from secondary metabolite that isrelated to environmental conditions. The purpose of this study was to generate the land suitability criteria for curry withcurcuma production base. A total of 49 curry plantation sites were sampled for plant age, productivity, and landcharacteristics, as well as soil and rhizome samples for laboratory analysis. Age-adjusted curcuma production was used as the yield response, which were plotted against land characteristics. Boundary lines confining the resultant scatter of points were then mathematically described. The boundary lines defined curcuma yields that may occur under a given set ofconditions and could be used to determine land suitability criteria. The criteria were done by using projection of lineintersection between boundary line and yield cut off. Land characteristic and curcuma yield relationships had similar pattern, the scalier data were more skewness with higher yields and the scalier confined by boundary lines. By using the lines, every land characteristics that were studied, could be determine to establish land suitability criteria for curry, except for wateravailability and aluminum saturation.
Efisiensi Serapan Hara dan Hasil Padi pada Budidaya SRI di Persawahan Pasang Surut dengan Menggunakan Kompos Diperkaya Razie, Fakhrur; Anas, Iswandi; Sutandi, Atang; Sugiyanta, ,; Gunarto, Lukman
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 41, No 2 (2013): JURNAL AGRONOMI INDONESIA
Publisher : Bogor Agricultural University

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Abstract

There are two main problems when system of rice intensification (SRI) cultivation is carried out at tidal areas, e.g. the presence of Fe which is potentially toxic to plants and low nutrients availability. Utilization of Azotobacter-enriched compost is a choice to overcome iron toxicity as well a source of nutrients. The aims of this research were to study the effect of Azotobacter enriched compost to reduce the rates of inorganic fertilizers applied, to increase the efficiency of N, P, and K uptake, and to increase plant growth and yield. Two rice cultivation methods were applied namely SRI and conventional rice cultivation methods on tidal lands (rice fields) of South Kalimantan. A completely randomized block design with two factors was applied. The main plots were SRI and conventional rice cultivation, and as subplots were eight types of fertilizer that is a combination between Azotobacter-enriched compost with inorganic fertilizers rates. The results showed that soil nutrient availability, uptake and efficiency of N, P, and K with SRI technique was higher than conventional cultivation. Azotobacter- enriched compost on the tidal land (rice fields) could reduce the use of N and K fertilizer by 25%. Furthermore, the efficiency of N and P uptake in enriched compost with 75% of fertilizer N, P, and K were not different with enriched compost with 75% of fertilizer. Ciherang rice yields with SRI cultivation was approximately 22% higher compared to that from conventional rice cultivation. Keywords: Azotobacter-enriched compost, conventional rice cultivation, inorganic fertizers
KARAKTERISTIK LAHAN DAN KUALITAS KEMANISAN UBI JALAR CILEMBU Solihin, Muhammad Amir; Sitorus, Santun Risma Pandepotan; Sutandi, Atang; Widiatmaka, Widiatmaka
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 7, No 3 (2017): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

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Abstract

The Cilembu sweet potato is the popular food crop from specific location in Sumedang, West Java. Sweetness degree is one of key indicators for this commodity. Sweetness degree relate to sugar content. Currently, Cilembu sweet potato variety was grown by farmers is Rancing. They were local culture on cultivation and storage of Cilembu sweet potato. Study of Cilembu sweet potato based on land characteristics on cultivation location and sweetness quality along storage periods between different cultivation locations is limited. The objectives of this study were to determined influence of land characteristics of cultivation locations and storage periods on sweetness quality of Cilembu sweet potato. Samples were taken from harvested tubers from Cilembu, Rancakalong, Sukasari, Cicalengka, and Jalaksana cultivation location using purposive sampling method. Sweetness degree was measured by total sugar content using luff schoorl method. The experiment design was used split plot design. The experiment room controlled at the same condition. The storage periods was observed at 0, 1, 2, 3, and 4 weeks after harvest. The role of land characteristics on the sweetness quality of Cilembu sweet potato was used analysis of regression and t test for equality of means. The result showed that storage periods was significantly affect the sweetness quality of Cilembu sweet potato, while the cultivation locations did not significant influence on sweetness quality. They were not interaction between both factors. The chemical and physical soil properties, elevation and climate properties affect differences of sweetness quality of Cilembu sweet potato on different cultivation locations.
PENGARUH PENGELOLAAN AIR DAN GENOTIPE PADI TERHADAP KERACUNAN BESI DAN PRODUKTIVITAS PADI DI LAHAN PASANG SURUT TIPE LUAPAN B DI SUMATERA SELATAN Harahap, Siti Maryam; Ghulamahdi, Munif; Aziz, Sandra Arifin; Sutandi, Atang; Miftahudin, ,
Jurnal Pengkajian dan Pengembangan Teknologi Pertanian Vol 17, No 2 (2014): Juli 2014
Publisher : Jurnal Pengkajian dan Pengembangan Teknologi Pertanian

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Abstract

The Effect of Water Management and Rice Genotypes to Against Toxicity of Iron and Productivity of Rice in Tidal Land Type B in South Sumatera. Tidal land is one of the alternative land to support increased productivity of rice, but rice productivity in this area is still low, and the land utilization is not optimal yet. One factor is high iron content in the soil that can be toxic to plants. The purposes of this study were (1) to determine the effect of water management and rice genotype, as well as their interaction on the percentage of leaf bronzing, growth and yield of rice in tidal lands, (2) to select an alternative combination of water management and rice genotypes that may increase rice yields in tidal land. This study was conducted from February until June 2013 in the tidal area with type B overflow, Mulia Sari village, Banyu Asin regency, South Sumatera. The experimental design used was a split plot design with three replications. The main plot was water management with four levels, while the subplot was rice genotypes consisted of three genotypes. The results showed that water management and its interactions with plant genotypes had significant effect only on the percentage of bronzing, Fe content in shoot, and Fe content in root crops, while the plant genotype significantly affected all observed variables. The use of genotypes tolerant to iron toxicity (Indragiri) combined with (form stagnant and saturated water management) drainage with intervals of two weeks could give yield 6.8 and 6.2 t/ha respectively.Keywords : Water management, genotype paddy, tidal landABSTRAKLahan pasang surut merupakan salah satu lahan alternatif untuk mendukung peningkatan produksi padi, tetapi produksi padi di lahan ini masih rendah, dan pemanfaatan lahannya belum optimal. Salah satu faktor penyebabnya adalah adanya senyawa besi dalam tanah yang dapat meracuni tanaman. Tujuan penelitian ini adalah (1) untuk mengetahui pengaruh pengelolaan air dan genotipe tanaman padi serta interaksinya terhadap hasil padi di lahan pasang surut, (2) memilih alternatif kombinasi pengelolaan air dan genotipe tanaman padi yang sesuai dan dapat meningkatkan hasil padi di lahan pasang surut. Penelitian ini dilaksanakan bulan Februari – Juni 2013 di lahan pasang surut tipe luapan B, Desa Mulia Sari, Kabupaten Banyu Asin Sumatera Selatan. Rancangan yang digunakan adalah Rancangan Petak Terpisah dengan tiga ulangan. Sebagai petak utama adalah pengelolaan air, yang terdiri dari empat taraf, sedangkan sebagai anak petak adalah genotipe padi, yang terdiri dari tiga genotipe (IRH108, IR64 dan Indragiri). Hasil penelitian menunjukkan bahwa pengelolaan air dan interaksinya dengan genotipe tanaman berpengaruh nyata terhadap persentase bronzing, kandungan Fe di tajuk, kandungan Fe di akar dan hasil tanaman sedangkan genotipe tanaman berpengaruh nyata terhadap semua peubah yang diamati. Penanaman genotipe tanaman toleran terhadap keracunan besi (genotipe Indragiri) yang dikombinasikan dengan drainase berinterval dua minggu dapat memberikan hasil masing-masing 6,8 dan 6,2 t/ha.
Geographical classification of Java Tea (Orthosiphon stamineus) from Java Island by FTIR Spectroscopy Combined with Canonical Variate Analysis Rafi, Mohamad; Purwakusumah, Edy Djauhari; Ridwan, Taopik; Barus, Baba; Sutandi, Atang; Darusman, Latifah Kosim
JURNAL SAINS DAN MATEMATIKA Volume 23 Issue 1 Year 2015
Publisher : JURNAL SAINS DAN MATEMATIKA

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Abstract

FTIR spectroscopy combined with canonical variate analysis was used for differentiation of java tea (Orthosiphon stamineus) according to their geographical origin. FTIR spectra of all java tea samples were acquired in the mid infrared region (wavenumber range 4000-400 cm-1). Preprocessing signal of FTIR spectra has been carried out prior to canonical variate analysis by standard normal variate. Combination of FTIR spectra in the region 1800-900 cm-1with canonical variate analysis has the power to differentiate java tea samples in terms of geographical origin. The developed method could be used for identification of geographical origin of java tea based on the samples used in this study.
KOMBINASI PUPUK ORGANIK HAYATI DAN PUPUK FOSFAT UNTUK PENINGKATAN KERAGAAN BIBIT KELAPA SAWIT (Elaeis guineensis Jacq) Sodiq, Abdul Hasyim; Anas, Iswandi; Santosa, Dwi Andreas; Sutandi, Atang
Jurnal Ilmu Tanah dan Lingkungan Vol 16, No 1 (2014)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB) | DOI: 10.29244/jitl.16.1.38-44

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Percobaan ini dilakukan untuk mengetahui pengaruh pupuk organik hayati diperkaya mikrob tanah terhadap keragaan tanaman, populasi total mikrob dan populasi mikrob pelarut fosfat di pembibitan kelapa sawit. Persiapan media tanam dilakukan dengan mengambil lapisan tanah atas (topsoil) dengan kedalaman maksimal 25 cm kemudian tanah tersebut dikering anginkan dan dimasukkan ke dalam setiap kantong plastik media tanam dengan volume masing-masing 5 kg. Pengukuran parameter keragaan tanaman bibit kelapa sawit dilakukan dari minggu ke-4 setelah tanam (MST) hingga ke-22 MST di rumah kaca kebun percobaan Cikabayan, Darmaga. Percobaan uji efektivitas mikrob pelarut fosfat (MPF) pada pupuk organik hayati menggunakan Rancangan Acak Kelompok (RAK), yang terdiri dari dua faktor dengan tiga ulangan. Hasil percobaan menunjukkan pengaruh penggunaan pupuk batuan fosfat terhadap tinggi tanaman memberikan hasil yang lebih baik dibandingan penggunaan SP-36 dan analisa statistik terhadap pengaruh tunggal pupuk organik hayati, pengaruh pupuk organik terhadap populasi total mikrob menunjukkan hasil terbaik.
AKTIVITAS ENZIM SELULASE MIKROBA YANG DIISOLASI DARI JERAMI PADI DI PERSAWAHAN PASANG SURUT DI KALIMANTAN SELATAN Razie, Fakhrur; Anas, Iswandi; Sutandi, Atang; Gunarto, Lukman; Sugiyanta, Sugiyanta
Jurnal Ilmu Tanah dan Lingkungan Vol 13, No 2 (2011): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB) | DOI: 10.29244/jitl.13.2.43-48

Abstract

Enzim selulase terdiri dari tiga enzim ekstraselular yang bekerja secara sinergis dalam mendegredasi selulosa, yakni endoglukanase, eksoglukanase dan β-glukosidase. Tiga enzim tersebut berperan dalam mendegradasi selulosa menjadi gula sederhana. Penelitian ini bertujuan untuk mengisolasi dan menyeleksi mikroba (bakteri dan fungi) berdasarkan aktivitas enzim selulase dari mikroba tanah yang diisolasi dari persawahan pasang surut Kalimantan Selatan. Kemampuan mengekskresikan enzim endoglukanase dinilai berdasarkan nilai indeks selulolitik pada media CMC dan kemampuan mengekskresikan enzim eksoglukanase dan β-glukosidase diukur dari aktivitas kedua enzim tersebut menggunakan metode Mandel yang dimodifikasi. Hasil yang diperoleh menunjukkan bahwa kisaran nilai indeks selulolitik dari mikroba selulolitik di persawahan pasang surut tipe A sebesar 2.29-3.72, di lahan tipe B sebesar 2.66-5.41, dan di lahan tipe C sebesar 1.84-3.34. Aktivitas eksoglukanase dari mikroba selulolitik di persawahan pasang surut tipe A sebesar 0.27-1.65 nkat mL-1, lahan tipe B sebesar 0.37-1.85 nkat mL-1, dan lahan tipe C sebesar 0.31-1.85 nkat mL-1. Mikroba selulolitik dari persawahan pasang surut Kalimantan Selatan memiliki aktivitas β-glukosidase sebesar 0.05-1.52 nkat mL-1. Isolat- isolat mikroba selulolitik yang memiliki aktivitas selulase tertinggi adalah isolat bakteri selulolitik J11, J42, R23, BK12, C52, TB41, B82 dan SN123, dan isolat fungi selulolitik ST33, ST22, TB31, B52, GA22, TD11, PI52 dan P31.
PERENCANAAN LOKASI PENGEMBANGAN PERKEBUNAN KARET RAKYAT DI KABUPATEN MANDAILING NATAL, PROVINSI SUMATERA UTARA Siregar, Hadijah; Sitorus, Santun Risma Pandapotan; Sutandi, Atang
Jurnal Ilmu Tanah dan Lingkungan Vol 13, No 1 (2011): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB) | DOI: 10.29244/jitl.13.1.8-13

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Pengembangan perkebunan karet merupakan salah satu strategi yang cukup realistis bagi pemerintah Kabupaten Mandailing Natal dalam meningkatkan perekonomian dan kesejahteraan masyarakatnya. Untuk mendukung hal tersebut penelitian ini bertujuan untuk: (1) menentukan lokasi yang berpotensi untuk pengembangan tanaman karet rakyat berdasarkan aspek fisik lahan dan (2) menganalisis dan menyusun arahan kebijakan pengembangan perkebunan karet rakyat di Kabupaten Mandailing Natal. Metode analisis dilakukan berdasarkan penentuan kesesuaian lahan, analisis spasial, dan analisis deskripsi. Hasil penelitian menunjukkan bahwa sebagian besar lahan di Kabupaten Mandailing Natal sesuai untuk budidaya tanaman karet yaitu seluas 460,849 ha (70.4%). Lokasi dan luas areal pengembangan perkebunan karet rakyat di Kabupaten Mandailing Natal berdasarkan potensi lokasi dan peraturan pemerintah terkait telah dikemukakan, dan dapat diarahkan pada lahan seluas 201,875 ha (30.8%).
KAJIAN WILAYAH PENGEMBANGAN INDUSTRI KECIL BERBASIS KOMODITAS UNGGULAN PERTANIAN DI KABUPATEN MAJALENGKA Hidayat, Edwin; Sutandi, Atang; Tjahjono, Boedi
MAJALAH ILMIAH GLOBE Vol 16, No 2 (2014)
Publisher : Badan Informasi Geospasial

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (672.969 KB) | DOI: 10.24895/MIG.2014.16-2.55

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ABSTRAKPertanian merupakan sektor basis di Kabupaten Majalengka, namun memiliki keterkaitan sektoral yang lemah dengan industri pengolahan hasil pertanian. Penelitian ini bertujuan: (1) mengidentifikasi keunggulan komparatif-kompetitif komoditas unggulan pertanian berdasarkan luas tanam, (2) mengidentifikasi desa-desa berbasis industri kecil pengolahan hasil pertanian, (3) mengidentifikasi desa yang memiliki tingkat fasilitas pelayanan dan aksesibilitas tinggi untuk mendukung industri, (4) mengidentifikasi potensial fisik lahan untuk pengembangan komoditas, (5) menentukan daerah pengembangan industri kecil berbasis komoditas unggulan pertanian dan daerah pengembangan komoditasnya. Metode analisis yang digunakan adalah analisis location quotient (LQ), shift share (SSA), skalogram dan kesesuaian fisik lahan. Komoditas pertanian yang diteliti adalah jagung, mangga, kedelai, dan pisang. Hasil penelitian menunjukkan jagung unggul di 6 kecamatan, mangga unggul di 13 kecamatan, kedelai unggul di 1 kecamatan, dan pisang unggul di 3 kecamatan. Terdapat 179 desa berbasis industri kecil pengolahan hasil pertanian. Desa dengan tingkat fasilitas pelayanan dan aksesibilitas tinggi terdiri atas 50 desa. Fisik lahan yang sesuai untuk masing-masing wilayah pengembangan komoditas terdiri atas 21.862 hektar untuk jagung, 207.546 hektar untuk mangga, 4.073 hektar untuk kedelai, dan 20.669 hektar untuk pisang. Wilayah yang diarahkan untuk pengembangan industri kecil berbasis komoditas unggulan pertanian terdiri atas 10 desa sebagai desa industri dan 6 kawasan industri yang merupakan gabungan dari beberapa desa, sedangkan arah prioritas pengembangan komoditas terdiri atas 3.264,24 hektar untuk jagung, 302,57 hektar untuk mangga, 3.694 hektar untuk kedelai, dan 907,61 hektar untuk pisang.Kata Kunci: Majalengka, komoditas unggulan, industri kecil, wilayah pengembanganABSTRACTAgriculture is a basic sector on Majalengka Regency, but it has a weak sectoral linkages with agro-processing industries. This study aimed to: (1) identify the comparative-competitive advantage of agricultural advantage commodities acreage, (2) identify the villages with become small industries of agro-processing based, (3) identify villages with high level of the facilities services and accessibility to support the industry, (4) Identify physical potention of the land for commodity development, (5) determine the development areas for small industries based on agricultural advantage commodities and its commodity development areas. The analytical method used was analysis of the location quotient (LQ), shift share analysis (SSA), schallogram and physical land suitability analyses. This research focus on commodities, those were corn, mango, soybean and bananas. The results showed that corn was superior in 6 districts, mango was superior in 13 districts, soybean was superior in 1 district and bananas was superior in 3 districts. There were 179 villages as basic of small agro-processing industries. Villages with the high level of facilities services and accessibility consisted of 50 villages. There were 21,862 ha land that phisically suitable for corn, 207,546 ha for mango, 4,073 ha for soybean and 20,669 ha for bananas. There were 10 industrial villages and 6 industrial areas that consisted of some villages, that could be developed as a development region for small industries based on agricultural advantage commodities. The priority areas for commodity development were 3,264.24 hectares for corn, 302.57 hectares for mango, 3,694 hectares for soybean and 907.61 hectares for bananas.Keywords: Majalengka, advantage commodity, small industry, development region