Judul: Manajemen Pemupukan Tanaman Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Buatan, PT Inti Indosawit Subur, Kabupaten Pelalawan, Riau
Abstrak: Kelapa sawit merupakan komoditas perkebunan terbesar yang memiliki peran strategis dan potensial di Indonesia. Kegiatan magang dilaksanakan di Kebun Buatan, PT Inti Indosawit Subur, Kabupaten Pelalawan, Riau pada Januari hingga Mei 2023. Kegiatan magang terdiri dari aspek teknis dan manajerial dengan mengikuti kegiatan di lapangan pada budidaya kelapa sawit. Kegiatan magang bertujuan mempelajari dan menganalisis manajemen pemupukan tanaman kelapa sawit. Pengamatan yang dilakukan pada penerapan kaidah 5T (tepat jenis, tepat dosis, tepat cara, tepat waktu dan tepat tempat), dan ketepatan alat pemupukan. Hasil pengamatan menunjukkan bahwa manajemen pemupukan di Kebun Buatan sudah sesuai dengan standar yang telah ditetapkan oleh perusahaan dan menerapkan kriteria Indonesian Sustainable Palm Oil (ISPO) dan Roundtable on Sustainable Palm Oil (RSPO). Hal ini dapat dilihat dari seluruh aspek ketepatan mencapai nilai > 95%. Ketepatan alat pemupukan mencapai 100%. Perusahaan dalam pelaksanaan pemupukan telah sesuai dengan kriteria ISPO dan RSPO., Oil palm is the largest plantation commodity that has a strategic role and potential in Indonesia. Intership activites were carried out at the Buatan Estate, PT Inti Indosawit Subur, Pelalawan Regency, Riau on January to May 2023. Internship activities consist of technical, and managerial aspects by following oil palm cultivation in the field. The internship aims to study and analyze the fertilization management of oil palm plants. Observations were made on the application on the 5T rule (right type, right dose, right time, right method and right place), and the accuracy of fertilization tools. The observation results show that fertilization management in Buatan Estate is in accordance with the standards set by the company and comply with Indonesian Suistable Palm Oil (ISPO) and Roundtable on Sustainable Palm Oil (RSPO) criteria. The “5T” were observed in the range accuracy of > 95%. The accuracy of fertilization tools reached 100%. The company in implementing fertilization is in accordance with ISPO dan RSPO criteria.
Keyword: 5T rules, fertilization tools, ISPO, RSPO

Judul: Pengelolaan Limbah Kelapa Sawit (Elaeis Guineensis jacq.) di Kebun Buatan PT Inti Indosawit Subur, Pelalawan, Riau
Abstrak: Waste management aspect was the focus of internship in PT Inti Indosawit Subur from March to June 2011. Besides producing the Crude Palm Oil (CPO) and Kernel Palm Oil (KPO), palm oil industry also produces waste that should be management properly. PT Inti Indosawit Subur has 5.549 ha of palm oil plantation. The processing unit produce some wastes such empty fruit bunch (EFB), palm oil mill effluent (POME), and solid. EFB, POME and Solid have been used in field as organic fertilizer that can reduce usage of inorganic fertilizer. The observation was made on the performance from different block with different treatment of fertilizer / waste application of the workers who spread the empty fruit bunch, the POME flow rotation, flatbed average size, and comparing the crop production. From observation, there was suggested that application of EFB should be improved on supervising to avoid restand. Aplication of POME should also be improved on rotation of application to match with schedule. The comparison of productivity and average weight of fruit bunch proved that application of EFB and POME were effective to reduce inorganic fertilizer without reducing productivity and weight of fruit bunch.
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Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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