Judul: Pengaruh Pemberian Pupuk N Dengan Berbagai Dosis Terhadap Pertumbuhan Awal Bibit Sagu (Metroxylon spp.) di Persemaian Dengan Sistem Polibag
Abstrak: Percobaan ini dilakukan untuk mengetahui pengaruh berbagai dosis pupuk N terhadap pertumbuhan awal bibit sagu di persemaian dengan sistem polibag. Percobaan dilaksanakan di PT. National Sago Prima, Selat Panjang Kabupaten Kepulauan Meranti Provinsi Riau pada bulan Februari sampai Juni 2012. Percobaan menggunakan rancangan acak kelompok dengan satu faktor yaitu dosis N. Terdapat enam taraf perlakuan dosis N, yaitu 0, 3, 6, 9, 12 dan 15 g N/polibag. Setiap perlakuan diulang sebanyak empat kali, sehingga terdapat 24 satuan percobaan. Masing-masing satuan percobaan menggunakan 50 bibit, sehingga total bibit yang ditanam sebanyak 1200. Setiap satuan percobaan terdapat 24 bibit yang diamati, sehingga total yang diamati adalah 756 bibit. Bibit yang digunakan memiliki bobot 0.5-1.0 kg. Sebelum ditanam, bibit dipangkas 20 cm dari pangkal banir dan dibersihkan, kemudian direndam dengan larutan Dithane M-45 selama 10 menit. Bibit yang sudah direndam di tanam ke polibag dengan media tanah gambut. Saat penanaman diberikan furadan dengan dosis 3-5 g/polibag.
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Judul: Pengaruh Pemberian Pupuk P dengan Berbagai Dosis terhadap Pertumbuhan Awal Bibit Sagu di Persemaian dengan Sistem Polibag
Abstrak: Experiment was conducted at PT. National Sago Prima, Selat Panjang, Riau. It was conducted during five months from February to June 2012. The purpose of this experiment was to study the effect of P fertilizer and look for a doses of P fertilizer that give the best results of early growth of sago sucker in nursery by polybag system. The experiment used Complete Randomized Block Design with a single factor consisted of 6 treatment and 4 replications. Treatment given the level of P fertilizer with 0, 3, 6, 9, 12, and 15 g TSP/polybag (equivalent to 0, 1.82, 3.64, 5.46, 7.28, 9.10 g P2O5/polibag). N and K Fertilizer use as basal fertilizer dose of 6 g each Urea/polybag and 2.5 g KCl/polybag. The experiment results show that P fertilization with different doses are not significantly affect for all vegetative variables (early growth) observed sago seeds which includes survival persentage, percentage of leaf expansion, leaf length pruning, length and width of the leaf pruning, leaf length 1, length and width of the leaf 1, leaf length of petiol 1, the number of child leaf 1, leaf leaves live span 1, the total number of leaves, dry weight of roots, petiol and rachis. Luxury consumption occurs due to the addition of P fertilizer caused the P nutrient medium prior to fertilization considered very high. Early growth of sago sucker are still influenced by the nutrition in the basal of sucker and environment.
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Judul: Kekonsistenan Hamiltonian pada Gerak Gelombang Interfacial
Abstrak: The interfacial wave is an internal wave that occurs at boundary of two layers fluid. It appears because there is difference of mass density between the two layers. The objective of this thesis is to formulate the motion of internal wave with flat base and flat as well as free upper bound surface. The motion equation obtained is a Hamiltonian system. The Hamiltonian in this system is expressed by variable of wave deviation and horizontal component of potential velocity. Under assumption that interfacial wave moves only in one direction, it can be shown that the Hamiltonian depends on the solution of the wave motion equation. The coefficients of the equation depend on the physical characteristics of the two layers of fluid, i.e. thickness and mass density. The numerical results show that Hamiltonian in the system is constant. It is consistent with Hamiltonian characteristic, which does not depend on time.
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