Judul: Management Analysis of Oil Palm (Elaeis guineensis Jacq.) Seed Garden at Surya Adi Plantation PT Binasawit Makmur South Sumatra, Management Analysis of Oil Palm (Elaeis guineensis Jacq.) Seed Garden at Surya Adi Plantation PT Binasawit Makmur, South Sumatra.
Abstrak: Kebun induk kelapa sawit merupakan kebun penghasil benih unggul kelapa sawit. Terdapat pekerjaan isolasi bunga jantan dan betina, polinasi bunga betina, panen tandan buah polinasi dan bunga jantan. Magang mempelajari pengelolaan kebun induk secara umum dan secara khusus sistem kerja yang digunakan, kapasitas panen tanda polinasi, dan pengaruh konsentrasi formaldehid terhadap viabilitas polen. Kegiatan magang dilaksanakan di Kebun Surya Adi, PT Binasawit Makmur, Ogan Komering Ilir, Sumatera Selatan berlangsung dari Februari hingga Juni 2023. Pelaksanaan magang pada tingkatan level teknisi, mandor, dan asisten. Terdapat perbedaan phytomer masing-masing bunga, sehingga umur bunga pada satu pokok pasti berbeda. Isolasi bunga dapat dilakukan satu bunga pokok-1 hari-1 untuk menghindari bunga terlewat diisolasi. Pekerjaan polinator dapat dipisah dengan pemasangan label dan jaring untuk mengurangi beban polinator saat tingkat polinasi tinggi. Perbedaan kapasitas panen pokok tinggi dan pokok pendek dapat dipisahkan melalui perbedaan premi panen. Pengamatan pengaruh formaldehid terhadap daya hidup polen menggunakan formaldehid dengan konsentrasi 1%, 4%, 6%, 10% dan kontrol 0%. Tidak ada beda nyata antar perlakuan tetapi perlakuan formaldehid membunuh semua polen (Viabilitas 0%) dibandingkan kontrol. Penggunaan formaldehid pada konsentrasi 1% sudah efektif membunuh polen., Seed garden is a field that produces superior oil palm seeds. The work involves isolating male and female flowers, pollinating female flowers, harvesting pollinated fruit bunches and male flowers. Interns study of management seed gardens in general and specifically the work system used, the harvesting capacity of pollination marks, and the effect of formaldehyde application on pollen viability. Internship activities were carried out at the Surya Adi Plantation, PT Binasawit Makmur, Ogan Komering Ilir, South Sumatra from February to June 2023. The internship was done at the level of technician, foreman, and assistant. There are differences in the phytomer of each flower, therefore each flowers in the tree must be indifference stage. Flower isolation can be done one flower per tree per day to avoid missed flowers being isolated. Pollinator work can be separated by labeling and netting to reduce the burden on pollinators when the pollination rate is high. The difference in harvesting capacity of tall trees and short trees can be separated through the difference in harvest premiums. Observation of the effect of formaldehyde on pollen viability using formaldehyde with concentrations of 1%, 4%, 6%, 10% and control (0%). There was no significant difference between treatments, but the formaldehyde treatment killed all pollen (0% viability) compared to the control. The use of formaldehyde at a concentration of 1% is effective in killing pollen.
Keyword: Formaldehyde, Palm Oil, Palm Oil Pollen, Palm Oil Seed, Seed Garden

Judul: Weed Management of Oil Palm (Elaeis guineensis Jacq.) in Surya Adi Estate, PT Binasawit Makmur, South Sumatra
Abstrak: The productivity of Indonesian palm oil has not reached its maximum potential. One of the reasons for this lack of productivity is the presence of weeds. Weeds have the potential to reduce yields of Fresh Fruit Bunches (FFB), so it is necessary to control them. The presence of weeds can diminish the yield of FFB; therefore, weed control is essential. Proper weed control can enhance FFB productivity. In weed control, appropriate steps are required, starting from planning, organizing, applying, and monitoring. The internship was conducted at Surya Adi Estate and Mesuji Estate, Sampoerna Agro, South Sumatra, where I served as KHL, a foreman's assistant, and an assistant supervisor. The KHL handled all technical aspects in the field, the foreman's assistant assisted the foreman in both technical and managerial tasks, and the assistant supervisor aided the assistant in managerial aspects. Primary data observation involved analyzing weed vegetation at various growth stages. The internship results indicated the application of manual and chemical weed control in accordance with company standards. The observations revealed that broadleaf weeds, such as Mucuna bracteata DC and Mikania micrantha Kunth, dominated at the TBM growth stage. Clidemia hirta D. Don, Ageratum conyzoides L., and Asystasia gangetica (L.) were prevalent at the young, adolescent, and mature stages of oil palm growth (TM). Among grassy weeds, Panicum sarmentosum Roxb was the dominant species at the TBM stage, while Cyperus rotundus L. was the most common sedge weed at the TBM growth stage, Produktivitas minyak kelapa sawit Indonesia belum maksimal. Salah satu penyebab kurangnya produktivitas yaitu gulma. Keberadaan gulma dapat menghilangkan hasil pada TBS sehingga gulma perlu dikendalikan. Pengendalian gulma yang tepat dapat meningkatkan produktivitas TBS. Dalam pengendalian gulma perlu langkah yang tepat mulai dari perencanaan, pengorganisasian, pengaplikasian, dan pengawasan. Magang bertujuan meningkatkan kemampuan teknis dan manajerial dalam budidaya di perkebunan kelapa sawit terutama dalam melakukan manajemen pengendalian gulma. Magang dilakukan di Kebun Surya Adi dan Kebun Mesuji, Sampoerna Agro Sumatera Selatan dengan menjadi KHL, pendamping mandor, dan pendamping asisten. KHL melakukan semua aspek teknis di lapangan, pendamping mandor membantu tugas mandor dalam aspek teknis dan manajerial, pendamping asisten membantu tugas asisten dalam aspek manajerial. Pengamatan data primer dengan melakukan analisis vegetasi gulma pada berbagai umur. Hasil magang menunjukkan aplikasi pengendalian gulma manual dan kimia sesuai dengan standar perusahaan. Hasil pengamatan menunjukkan jenis gulma yang ditemukan didominasi oleh daun lebar, seperti Mucuna bracteata DC, Mikania micrantha Kunth. pada umur tanam TBM. Clidemia hirta D. Don, Ageratum conyzoides L., dan Asystasia gangetica (L.) pada umur tanam TM muda, TM remaja, dan TM tua. Untuk jenis gulma rumput, yang mendominasi di umur tanam TBM yaitu Panicum sarmentosum Roxb. Jenis gulma teki paling banyak di umur tanam TBM yaitu spesies Cyperus rotundus L
Keyword: application, dominance, organization, planning, supervision

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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