Judul: Study on Land Suitability Evaluation for Upland Sugarcane on PT. Sumber Madu Bukari, Kabupaten Kendari.
Abstrak: Penanaman tebu di daerah Kendari mempakan salah satu dari upaya memperluas penanaman tebu di luar Jawa. Tujuan penelitian ini adalah (1) menemukan sifat-sifat tanah yang mempengaruhi pertumbuhan dan produksi serta menentukan kriteria klasifikasi kesesuaian lahan tebu lahan kering, (2) mengidentifikasi masalah pengembangan lebih lanjut tanaman tebu lahan kering serta menemukan pemecahannya. Penelitian ini dilaksanakan di areal PT Sumber Madu Bukari pada lokasi Aronggo dan Lamooso. Analisis tanah dilaksanakan di Laboratorium Unit Tanah Faperta Universitas Haluoleo (Unhalu) dan UPT Laboratorium Dasar Pusat Unhalu berlangsung mulai bulan Januari hingga Juni 2002. Metode yang digunakan adalah metode survei dengan pemilihan area sebagai sampel secara bebas sistematik yang menggunakan jarak observasi transek. Hasil penelitian menunjukkan bahwa (1) tingkat produksi berdasarkan hasil laporan perusahaan berbeda dengan hasil penelitian, bahwa lokasi A yang diprediksi ternyata memiliki produksi yang lebih tinggi di banding lokasi L, (2) Sifat kimia (kandungan P2O5 tanah) dan sifat fisik tanah terutama kandungan air tanah pada kapasitas lapang dan pori drainase secara umum dapat dipergunakan sebagai indikasi terhadap pertumbuhan dan produksi tebu di semua area sampel dan lapisan tanah, (3) Berdasarkan hasil kriteria klasifikasi CSR/FAO staff bahwa seluruh unit lahan berada pada kelas N1 dan Sys seluruh unit lahan berada pada kelas kesesuaian S3 kecuali unit lahan 2 dan 4. Sedangkan berdasarkan B/C Ratio kelas yang terbentuk pada lokasi Arongo yaitu S1 (A-1), S2 (A-2), S3 (A-3), dan pada lokasi Lamooso seluruh unit lahan berada pada kelas N , (4) Faktor-faktor karakteristik lahan penentu produksi tebu lahan kering khususnya di Kabupaten Kendari berdasarkan data hasil analisis yaitu sifat fisik tanah (Permeabilitas, tekstur, dan pori drainase cepat), sifat kimia (C-organik dan (P2O5), kelima peubah tersebut C-organik memiliki pengaruh langsung dan pengaruh total yang besar terhadap produksi, (5) Modifikasi kriteria kesesuaian lahan berdasarkan dari pendekatan klasifikasi yang ada di Kabupaten kendari dilakukan dengan kualitas lahan berupa ketersediaan air (curah hujan 10 hari), media perakaran (kedalaman efektif), retensi hara (KTK tanah dan C-organik), toksisitas (kejenuhan Al), hara tersedia (N, P dan K), terrain (lereng), tingkat bahaya erosi dan bahaya banjir dan (6) Berdasarkan survei di lapangan dan analisis data yang telah dilakukan ditemukan delapan masalah utama di perkebunan PT. SMB yaitu (a) iklim, (b) lahan, (c) tata letak dan jalan kebun, (d) tebang dan angkut, (e) sumber daya manusia, (f) manajemen, (g) sosial dan budaya dan (h) hama tebu., National sugar need which cannot be fulfilled by in country productivity has led to a big sugar import which ultimately compete the local farmer's sugar prices. This is because local farmer cost of productivity are still higher due to production nefficiency. In line with improving the efficiency the govemment extended sugar planting areas particularly in the islands out side Java. Sugarcane planting in Kendari area is part of the effort just mentioned. To realize the efficiency of the sugarcane planting in this new areas researches must be carried out. The objectives of this research are: (1) To identify soil characteristics which influence sugarcane growth and productivity so that enable to set criteria for land suitability classification; (2) To identify problems related with developing further upland sugarcane at PT Sumber
Keyword: Sugar cane, Land Suitability, productivity

Judul: Analisis Kesesuaian Agroklimat Tanaman Tebu (Saacharum officinarum) di Kalimantan Selatan
Abstrak: Sugar cane (Saacharum Officinarum L) is a plant where sugar came from. Sugar cane has a distinct economic potential. The needs of sugar in this country is getting bigger every year, and it makes government must act faster to give people needs. The purpose of this study is to make South Borneo as a new solution for increasing domestic production of sugar cane. South Borneo has a huge suitable area to expand this commudity. This study is based on the method as described by FAO and used GIS capability for an integration of land qualities to create land unit. A simple map subsystem (Arcview GIS) was used for basic data and models result demonstration on a map. Climatic and soil requirements for sugarcane growth were identified and a land suitability map was produced by overlaying the climatic and soil suitability maps. The land with good capability for agriculture uses is classified as highly suitable (S1) and moderately suitable (S2), the land with a lower quality is classified as a marjinally suitable (S3) and not suitable (N). According to results, 49,26% of the total area or about 1.930.240 ha was good capable for sugarcane uses, and 50,74% is not dedicated for agriculture. The most suitable areas are found in the south of the province. In the rest of the province climatic or soil conditions are expected to restrict sugarcane growth. The results of this study can be used for further research on the possibilities for a large-scale commercialisation of the crop in South Borneo and in other regions with favourable ecological conditions.
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Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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