Judul: Management Production and Retardant  Application on Sunflower (Helianthus annuus L.) and China Aster (Callistephus  chinensis L.) in PT. Bina Usaha Flora, Cianjur, West Java
Abstrak: PT. Bina Usaha Flora adalah salah satu perusahaan yang bergerak dibidang budidaya tanaman hias terbesar di pulau Jawa. Kegiatan magang berlangsung selama empat bulan pada bulan Januari hingga Mei 2021. Tujuan umum kegiatan magang adalah meningkatkan pengetahuan dalam proses budidaya tanaman hias meliputi semua aspek teknis, aspek manajerial, dan manajemen produksi. Tujuan khusus kegiatan magang ini yaitu mendapatkan konsentrasi paclobutrazol yang paling baik untuk menurunkan tinggi tanaman bunga matahari dan aster china tanpa mengubah karakter lain dari tanaman. Data yang dikumpulkan meliputi semua kegiatan yang berkaitan dengan aspek teknis kegiatan di lapangan dan diskusi langsung dengan karyawan perusahaan. Karakter tanaman yang diamati untuk aplikasi paclobutrazol meliputi tinggi tanaman, jumlah daun, cabang primer, cabang sekunder, waktu bunga mekar, jumlah bunga mekar, dan diameter bunga mekar. Hasil pengamatan menunjukkan aplikasi paclobutrazol pada bunga matahari dan aster china dapat menurunkan tinggi tanaman agar ideal untuk dijadikan tanaman hamparan dan tanaman pot, tanpa mengubah karakter lainnya. Aplikasi paclobutrazol pada P3 dengan konsentrasi 150 ppm dapat menurunkan tinggi tanaman 50,3% (matahari Lemon) dan 58,8% (matahari Mix) dari tanaman kontrol. Tanaman bunga matahari P3 tidak mudah rebah saat tertiup angin di lapangan. Tinggi tanaman aster china pada P1 dan P2 dengan konsentrasi 25 ppm dan 50 ppm dapat diturunkan 40,4% dan 50,1% dari tanaman kontrol, tanpa mengubah karakter lainnya. Tinggi tersebut ideal untuk dijadikan tanaman pot karena tingginya 1-1,5 kali tinggi pot., PT. Bina Usaha Flora is one of the largest ornamental plant cultivation companies on the island of Java. The internship activity was carried out for four months from January to May 2021. The general purpose of this internship is to increase knowledge in the ornamental plant cultivation process covering all technical aspect, managerial aspect, and production management. The specific purpose of this internship is to obtain the best concentration of paclobutrazol to reduce plant height of sunflower and China Aster without changing other characteristics of the plant. The data collected includes all activities related to the technical aspects of activities in the field and direct discussions with company employees. The plant characters observed for the application of paclobutrazol included plant height, number of leaves, primary branches, secondary branches, blooming time, number of flowers blooming, and diameter of blooming flowers. The results showed that paclobutrazol in sunflower and China aster and could reduce plant height, so that it is ideal for use as bedding plant and potted plant, without changing other characters. The application of paclobutrazol at P3 with a concentration of 150 ppm can reduce plant height by 50.3% (Lemon sunflower) and 58.8% (Mix sunflower) from control plants. P3 sunflower plants do not fall easily when blown by the wind in the field. Chinese aster plant height at P1 and P2 with concentrations of 25 ppm and 50 ppm could be reduce 40.4% and 50.1% from control plants, without changing other characters. This height is ideal for potted plants because it is 1-1.5 times the height of the pot.
Keyword: China aster, Management production, Paclobutrazol, Sunflower

Judul: Produksi Tanaman Dianthus chinensis L. sebagai Tanaman Hias Pot dan Hamparan di PT. Bina Usaha Flora, Cianjur, Jawa Barat
Abstrak: Kegiatan magang dilaksanakan di PT. Bina Usaha Flora, Cianjur, Jawa Barat mulai dari Januari hingga April 2020. Pelaksanaan kegiatan magang bertujuan untuk mempelajari dan meningkatkan keterampilan teknis dan manajerial dalam produksi komoditas dianthus di PT. Bina Usaha Flora, Cianjur. Tujuan khusus dari kegiatan magang adalah memperoleh informasi mengenai produksi, kriteria panen komoditas dianthus serta mengevaluasi kelayakan usaha tani dari komoditas tersebut. Metode yang digunakan adalah metode langsung melalui pengamatan di lapangan serta wawancara dengan karyawan perusahaan dan metode tidak langsung dengan melalui studi literatur. Pengamatan meliputi tinggi tanaman, lebar tajuk, jumlah kuntum bunga, dan analisis usahatani. Kriteria panen hasil pengamatan menunjukkan hasil yang sesuai dengan kriteria perusahaan. Nilai R/C ratio pada komoditas dianthus pot dan dianthus polybag yaitu 3,47 dan 2,53. Hasil nilai R/C ratio pada komoditas dianthus pot dan dianthus polybag menunjukkan hasil > 1 yang berarti usahatani layak dijalankan dan bersifat menguntungkan., Internship activities carried out at PT. Bina Usaha Flora, Cianjur, West Java from January to April 2020. The internship aims to learn and improve technical and managerial skills in the production of dianthus commodities at PT. Bina Usaha Flora, Cianjur. The specific objectives of the internship are to obtain information regarding production, and criteria for harvesting the dianthus commodity and, evaluate the feasibility of farming the commodity. The method used the direct method through direct observation in the field and interviews with company employees and the indirect method through literature studies. Observations included plant height, crown width, number of flower buds, and farming analysis. The observed harvest criteria show results that are the company's criteria. R/C ratio values for dianthus pot and dianthus polybag commodities were 3,47 and 2,53. The results of the R/C ratio values for the commodity dianthus pot and dianthus polybag show results > 1, which means that farming is feasible and profitable.
Keyword: dianthus, harvest criteria, polybag, pot

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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