Judul: Manajemen Pemupukan Kelapa Sawit (Elaeis guineensis Jacq.) di Bagan Kusik Estate, PT Harapan Sawit Lestari, Kalimantan Barat
Abstrak: The internship was conducted at Bagan Kusik Estate (BKE), PT Harapan Sawit Lestari, West Kalimantan during 4 months. The technical aspects that done during the internship were participate in the plantation activities, i.e : fertilization, weed control, sanitation, leaf sampling, and harvesting. The managerial aspects that done during internship were become an assistant of foreman and assistant of field assistant. The observation done was observing the proper implementation of the rule of the fertilizer application in field. The observations indicated that the fertilizer application on the field has fulfilled these principles, although it could be better by improving the method and dosage aspects. The accuration of fertilization method was 85.4 % for Urea and 80.6 % for Borate. Score of the precise of Urea dosage was 91.1%, therefore the company should be use the standard measuring cup for each fertilizer. The precision of fertilizer types in the fertilizion has reached 100 % for any types of fertilizer. The quantity of fertilizer that applicated in a year likely to affect in fresh fruit bunch production, but the fertilization have a positive correlation with the fresh fruit bunch production. Age and work experience of the fertilization labour doesn’t have a real effect to their work performance. The efficiency of the employe use in the field has been reached with 0.1508 hk ha-1 employement index.
Keyword: production, palm oil, fertilizer efficiency, fertilizer effectiveness, fertilizer, Bogor Agricultural University (IPB)

Judul: Manajemen Pemupukan Kelapa Sawit (Elaeis guineensis Jacq.) di Bangun Koling Estate Bumitama Gunajaya Agro, Kalimantan Tengah
Abstrak: The internship was conducted at Bangun Koling Estate (BKLE), Bumitama Gunajaya Agro, Central Kalimantan during from Februari to Juni 2013. The internship activities aimed adding experience out and learn the management of palm oil plantation especially fertilization management. Collection of data and information carried out by the direct and indirect method. The observation was made is fertilizer effectineness that consist of type, time of application, method and dose of fertilzer. The observation of the efficiency of fertilizer consist of labor and cost efficiency. Nutrient deficiency in BKLE from 2011 until 2012 has decreased for N, K and B but a slight increase in Mg and Cu deficiency
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Judul: Invers Drazin dari Matriks Toeplitz Singular
Abstrak: Matriks Toeplitz adalah matriks yang setiap unsur pada diagonal utama bernilai sama dan setiap unsur pada subdiagonal yang bersesuaian dengan diagonal utama juga bernilai sama. Matriks singular adalah matriks yang tidak bisa ditentukan inversnya. Akan tetapi, dapat diupayakan untuk ditentukan inversnya menggunakan invers matriks yang diperumum. Invers Drazin merupakan salah satu jenis invers matriks yang diperumum. Pada karya ilmiah ini ditentukan invers Drazin dari matriks Toeplitz singular dengan menggunakan metode Leverrier Faddeev. Kemudian, ditentukan invers Drazin dari matriks Toeplitz singular yang direpresentasikan sebagai penjumlahan segitiga bawah dan segitiga atas matriks Toeplitz berdasar pada teorema Gohberg dan Semencul., Toeplitz matrix is a matrix in with element on the main diagonal has the same value and on the subdiagonal corresponding to the main diagonal also has the same value. Singular matrix is a matrix that has no inverse. However, it can be attempted to determine the inverse using a generalized inverse matrix. Inverse Drazin is a type of generalized matrix inverse. This paper discussed the inverse Drazin for a singular Toeplitz matrix using the Leverrier Faddeev method. Then, the Drazin inverse of the singular Toeplitz matrix which is represented as a sum of products of lower and upper triangular Toeplitz matrix based on Gohberg and Semencul theorem.
Keyword: inverse Drazine, singular Toeplitz matrix