Judul: Manajemen Pemupukan Tanaman Kelapa Sawit (Elaeis guineensis Jacq.) pada Area Marjinal di Serawak Damai Estate, PT. Windu Nabatindo Lestari, Bumitama Gunajaya Agro, Kotawaringin Timur, Kalimantan Tengah
Abstrak: Internship has been implemented from February 13 to May 13, 2012 in Serawak Damai Estate, PT Windu Nabatindo Lestari (BGA GROUP), East Kotawaringin, Central Kalimantan. Internship activities aimed to find out, train and understand the management palm oil plantations especially fertilization management. The collection of data and information was carried out by the direct method and the indirect method. The direct method was carried out to obtain primary data in the field through observations ranging from preparation to implementation of cultivating, fertilizing effectiveness and efficiency through the principle of 5T, direct discussion with estate manager (EM) and the assistant as well as employee. The indirect method is performed to obtain the secondary data from the garden office such as general conditions of the corporation, the climate condition and a type of soil, the condition of a plant, the organizational structure, production data and data related to activity of fertilization. Primary and secondary data is analyzed with descriptive and quantitative methods. Implementation of fertilizing in SDME Division 2 is generally pretty good ranging from preparation to implementation of fertilizing. Fertilizing effectiveness and efficiency with the principles of 5T are not good enough. Therefore, supervision and infrastructure improvements should be done correctly to improve the quality of fertilizing.
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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: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology