Judul: Uji efektivitas pupuk daun growmore 32-10-10 terhadap pertumbuhan, produksi, dan kadar hara tanaman jagung di tanah latosol Darmaga (Oxic Dystropept)
Abstrak: Corn is important food commodity beside rice. The productivity of corn in year of 2005 was 12.52 million tons increased by 1.30 million tons compared to corn productivity in year of 2004. One of methods to increase the productivity is by using fertilizer. Effectiveness fertilize is to add mineral nutrients which are slightly supplied so it can use by the crop optimize. Foliar fertilizer is an artificial fertilizer which given to the crop by mean of spray to the leaf. Generally foliar fertilizer consist of macronutriens such as N, P, K, Ca, and Mg and micronutrients such as Fe, Cu, Co, Mn, and Zn. The main purpose of this research is to observe the effectivity of Growmore 32-10-10 foliar fertilizer compare to standard fertilization on corn crop. The research use randomized complete block design. The treatment consisted of : (1) Control (2) Standar (recommendation fertilization of Indonesian Agricultural Departement) (3) S1G1 (4) S1G2 (5) S1G3 (6) S1G4 (7) S2G1 (8) S2G2 (9) S2G3 (10) S2G4. all of the treatments repeated by three times in block. S1 equal to ¼ standard dose and S2 was equal to ½ standard dose. These doses were combined with Growmore (G1, G2, G3, and G4).
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Judul: Efektivitas Paket Pupuk Daun Growmore 12-45-10 Dengan Pupuk Konvensional Terhadap Pertumbuhan, Produksi, Dan Kadar Hara Tanaman Jagung (Zea mays L.) Pada Lahan Latosol Darmaga
Abstrak: The limitation of com comudity in the country has not been enough to fulfill the national needs. The increasing of production com could be made by giving correct fertilizer on time, the amount and the kind of the fertilizer in the application. Beside giving fertilizer through the soil it can be done also through the leaves. Fertilizing through the leaves have strongness point, the dosage will by standard, then the sensivity can be arranged and the accuracy is better, it provides good result in macro and micro, in the amount and limited tirr ' The leaves shell and the root shell, take good result through "apoplast". This research is hoped to observe the effectivity of Growmore leaves 12-45-10 on the dosage of conventional fertilizer is differen. fertilizing by using conventional standard dosage (advice from "Depart, Pertanian") on the increasing of products parameter and the basic plantation c and well as the economic growth. The design of this reserch used is rando mehod (planing random group) 10 treatment and 3 replicates. The result of this research indicates that the application of the Growmore leaves fertilizer 12-45-10 gives positive effect better than standard dosage activities and the control on the growth parameter, product component and basic hara (N, K and Ca). The value of RAE (Relative Agronomic Effectiveness) on the treatment of dosage conventional fertilizer 225 Kg/ha Urea, 100 Kg/ha SP-36, 75 Kg/ha KCL and the dosage of Growmore fertilizer 15 Kg/ha, can reach 173,4% compare with treatment standard. On the analysis at farmer business effort competence by using R/C ratio, the package of Growmore leaves fertilizer 12-45-10 with conventional growth fertilizer the biggest one is on the conventional fertilizer 150 Kg/ha Urea, 50 Kg/ha SP-36, 37,5 Kg/ha KCL and dosage of the Growmore fertilizer 12 Kg/ha, the ratio score is 1,60 and the profit will be taken is about 0,60 times from capital.
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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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