Judul: Pengelolaan perkebunan sagu (Metroxylon spp) di PT. National Sago Prima, Selat Panjang, Riau: seleksi bibit sagu berdasarkan jenis, tinggi pohon induk dan bobot bibit sagu terhadap pertumbuhan bibit sagu di persemaian
Abstrak: Sago nursery is a special factor that performed during the internship activities at PT. National Sago Prima, Selat Panjang, Riau. The experiment was conducted to obtain information in a nursery on the effects of this type of sago, height of mother plant sago and weight of sucker. The type of sago used was spiny sago (S1) and sago without spiny (S2). Height of mother plant used was 3.3 m - 4.6 m (T1), 4.6 m - 6.6 m (T2), more than 6.6 m (T3) and mother plant that have been harvested (T4). Sucker Weight used was 0,5 kg – 1,5 kg (B1), 2 kg – 3 kg (B2) dan 3,5 kg – 4,5 kg (B3). The results shown sago without spiny is better than spiny sago, height of mother plant is not effect significantly and sucker weight 3,5 kg – 4,5 kg is better than two other sucker weight. During the internship activities, sago cultivation activities conducted to obtain primary data. Secondary data were obtained by conducting interviews, discussions and reading of literature contained in the company.
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Judul: Pengelolaan sagu (Metroxylon spp.) Di PT. National Sago Prima, Selat Panjang, Riau dengan aspek khusus pengaruh bobot bibit dan penggunaan pupuk organik cair terhadap pertumbuhan bibit sistem polibag di pembibitan
Abstrak: The objective of this study was to obtain some informations about sago palm cultivation especially in nursery and know the effect of sucker weight and liquid manure application to the vegetative growth of sago sucker at polybag nursery system. This experiment held in PT. National Sago Prima, Selat Panjang, Riau from February to June 2011. The primary data were found by direct methods, it included the following activities in cultivation of sago palm, and did experiment in the field. The secondary data were found by indirect method, interviewed and discussed with the company staff and study literature to get more informations. The special aspect was find by arranged in split plot design, where the main plot was sucker weight with three levels (50-200 g, 200-500 g, and 500-800 g) and the subplot was four levels of liquid manure application (0, 2, 5, and 8 ml/l) with three replications. The results showed that there was no significantly different in the vegetative growth of sucker by liquid manure application. The sucker weight treatment showed significantly different to survival rate, leaf length, number of leaves, and percentage of expanded leaves. The larger suckers produced higher of leaf length. However, larger suckers didn’t always produce higher percentage of expanded leaves and higher survival rate of suckers in comparison to smaller ones. The sucker weight 200-500 g was the best sucker size to the vegetative growth of suckers
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Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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