Judul: Studi Pengelolaan Pemupukan Tanaman Menghasilkan Kelapa Sawit  (Elaeis guineensis Jacq.) Di Bukit Pinang Estate, Pt Bina Sains Cemerlang,  Musi Rawas, Sumatera Selatan
Abstrak: The objective of this internship is to increase technical and managerial skill. The internship has done from January12th until June 12th in Bukit Pinang Estate (BPE) Palm Oil Plantation, PT Bina Sains Cemerlang, Musi Rawas, South Sumatera.The methods of this internship are direct and indirect methods. Direct method was conducted by work practice as a field worker and foreman assistant, while the indirect methods was conducted by collecting information from estate archives and literature review. Fertilization applied to keep the amount of soil nutrient in order to ensure plant nutrient fufillment. On yielding crops, fertilization becomes a vital importance because it counts up to 60% of maintenance cost. Therefore it is urgently a correct management of fertilization to optimum efficiency and effectiveness. Condition of rainfall and oblique land topography results fertilization in Bukit Pinang Estate hardly influenced by run off. Fertilization in Bukit Pinang Estate is done by applying concept (4T) that is type precise, dose precise, time precise, and way precise of fertilization. Monitoring done to control quality of fertilizer application in the field . Based on result of observation of quality of fertilization seen 5.2% oil palm which is not fertilized by dredger and 94.8% is fertilized, 41.8% fertilizer is sowed with number of propers while 29.1% too a few, and 29.5% too excessive, 80.2% fertilizer have been disperse in frond, 0.8% in saucer, 5.1% in gate, 3.8% in frond and gate, and 10.1% in frond and saucer. Result of observation of condition of saucer and gate seen 64.4% saucer in condition of dirty, 35.6% clean saucer and 40.4% gate in condition of dirty and 59.6% in condition of clean. Improvement of fertilizer efficiency in BPE is done with making of siel pits, road siel pits, compiles frond " U" Shape, and the application of organic material (JKS).
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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: Grup dan Homomorfisma Grup pada Rubik Revenge
Abstrak: Rubik cube is a kind of puzzle game. A player must arrange rubik sides, which have been disordered, back to the position where every side has the same colour. This paper does not focus on the settlement solution, but instead on proving the existence of a group homomorphism between rubik movement group and S96 symmetric permutation group in rubik revenge. Firstly, it has been proved that rubik movement set is a group. Then, it also has been proved that the M set, which contains numeric labels of 1 until 96 in cubinos sides, is S96 symmetric permutation group.
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