Judul: Pengaruh Pemberian Pupuk K dengan Berbagai Dosis terhadap Pertumbuhan Awal Bibit Sagu di Persemaian dengan Sistem Polibag
Abstrak: Percobaan ini dilakukan untuk mengetahui pengaruh pemupukan kalium terhadap pertumbuhan dan perkembangan bibit sagu (Metroxylon sp). Percobaan dilakukan di perkebunan milik PT. National Sago Prima, Selat Panjang, Riau pada bulan Februari - Juni 2012. Percobaan menggunakan Rancangan Kelompok Lengkap Teracak dengan satu faktor yaitu dosis pupuk kalium. Pupuk yang digunakan adalah pupuk KCl, yang terdiri atas 6 perlakuan, yaitu 0, 1.24, 2.49, 3.73, 4,98, dan 6.22 g K/polibag. Penggunaan pupuk K dikombinasikan dengan pupuk dasar N dan P dengan dosis masing-masing adalah 6 g N/polibag dan 3 g P/polibag. Bibit sagu ditanam di bawah naungan paranet 70 %, sebelum penanaman eksplan dibersihkan dari jaringan mati, kemudian dipangkas sekitar 30 cm di atas banir. Bibit direndam dalam larutan Dithane M-45 selama 10 menit dan dikeringanginkan. Bibit ditanam dalam polibag berisi tanah gambut yang telah dicampur dolomit dengan dosis 40 g/polibag, dan di sekitar bibit diberikan Furadan 3 G. Aplikasi pemupukan dilakukan sehari setelah penanaman. Pemupukan kalium yang diberikan tidak berpengaruh nyata terhadap peubah yang diamati antara lain panjang daun pangkasan, panjang dan lebar anak daun pangkasan, panjang daun 1, panjang dan lebar anak daun 1, persentase hidup bibit, persentase pemekaran, panjang petiol, jumlah anak daun 1 dan jumlah daun.
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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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