Judul: Pengaruh Mikoriza dan Bio Organik Terhadap Pertumbuhan Bibit Cananga Odorata (Lamk) Hook.Fet & Thoms
Abstrak: INTRODUCTION. One of way which can be done to yield crop C. odorata with good quality is by giving fertilizer, but sometimes giving fertilizer is not influences physical character, chemical and biology of soil at the same time. So required existence of biofertilizer technology capable to give repair media to grow and also stands to the plant growth. Usage of mycorrhiza and bio organic is expected can be increase of C. odorata growth. This research aimed: (i) co-signature existence influence of mycorrhiza and bio organic to growth of C. odorata and (ii) co-signature root colonization C. odorata with giving slurry. METHODOLOGY. This research applies completely randomized design, and measuring plant growth and sees colonization of FMA (Fungi Mycorrhiza Arbuscular). CONCLUSION. This research shown, giving of slurry can happened colonization of root by hypha FMA at 9 week and root colonisation of C. odorata can happened naturally. This research also indicated that existence of mycorrhiza and bio organic has not optimal to growth of seed C. odorata during 9 week. Key word: Mycorrhiza, Bio Organic, Cananga odorata.
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Judul: Respons Pertumbuhan Bibit Nyamplung (Calophyllum inophyllum L.) terhadap Pemberian Pupuk Organik dan Fungi Mikoriza Arbuskula.
Abstrak: Nyamplung merupakan salah satu jenis tanaman hutan yang dapat digunakan sebagai wind breaker dan bijinya dapat digunakan untuk sumber biofuel. Penelitian ini bertujuan mengkaji pengaruh pupuk organik dan inokulasi fungi mikoriza arbuskula (FMA) dalam meningkatkan pertumbuhan bibit nyamplung. Penelitian ini dilakukan dengan menggunakan rancangan acak lengkap dua faktor. Faktor pertama adalah pupuk dengan tiga taraf yaitu (1) tanpa pupuk (kontrol), (2) pemberian pupuk kandang dan (3) pemberian pupuk kompos. Faktor kedua adalah FMA dengan tiga taraf yaitu (1) tanpa FMA (kontrol), (2) Glomus agregatum dan (3) mycofer. Hasil penelitian ini menunjukkan bahwa tidak ada interaksi antara perlakuan pupuk organik dan inokulasi FMA. Penambahan pupuk organik tidak dapat meningkatkan tinggi bibit nyamplung, tetapi dapat meningkatkan diameter bibit nyamplung sebesar 9.47% dibandingkan dengan kontrol. Perlakuan yang diberikan tidak berpengaruh nyata terhadap biomassa bibit nyamplung. Inokulasi FMA dapat meningkatkan jumlah spora dan kolonisasi akar oleh FMA pada bibit nyamplung. FMA yang bersimbiosis dengan akar bibit nyamplung dicirikan dengan adanya struktur hifa, vesikula, dan arbuskula.
Keyword: kolonisasi akar, nyamplung, pupuk kompos, pupuk kandang

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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