Judul: Rice Growth and Production of Three Varieties of Inpari with Batang Piaman Variety inserts in Multicanopy
Abstrak: Peningkatan jumlah penduduk menyebabkan permintaan akan beras meningkat. Perlu dilaksanakan upaya peningkatan produksi padi untuk memenuhi kebutuhan padi nasional. Pengembangan inovasi sistem budidaya baru melalui sistem multikanopi merupakan salah satu upaya yang dapat dilakukan untuk meningkatkan produksi padi. Penelitian ini bertujuan mengkaji pertumbuhan dan produktivitas padi varietas Inpari 32, Inpari 33, dan Inpari 43 pada sistem budidaya multikanopi dengan sisipan varietas Batang Piaman. Penelitian dilaksanakan di lahan percobaan Balai Besar Tanaman Padi Sukamandi, Subang, Jawa Barat. Rancangan percobaan yang digunakan adalah Rancangan Lengkap Kelompok Teracak (RKLT) Faktorial dua faktor, yaitu varietas (Inpari 32, Inpari 33, dan Inpari 43) dan sistem budidaya (monokultur, multikanopi sisip 1, dan multikanopi sisip 2). Hasil penelitian menunjukkan varietas Inpari 43 dan sistem budidaya monokultur memiliki respon pertumbuhan dan produksi paling baik. Varietas, sistem budidaya, maupun interaksi keduanya tidak mempengaruhi produksi padi dalam gabah kering giling. Berdasarkan proyeksi hasil (tanpa gangguan hama), varietas Inpari 32 dengan sistem budidaya multikanopi sisip 2 menghasilkan produksi gabah kering giling tertinggi sebesar 8,93 ton ha-1., The increase in population caused increasing in demand for rice. It is necessary to increase rice production to meet national rice needs. The development new cultivation through a multi-canopy system is one of the efforts that can be made to increase rice production. This study aims to examine the growth and productivity of rice varieties Inpari 32, Inpari 33, and Inpari 43 in a multi-canopy cultivation system with the insertion of the Batang Piaman variety. The research was carried out in the experimental land of the Sukamandi Rice Research Center, Subang, West Java. The experimental design used was the Complete Design of the Randomized Group (RKLT) Factorial consisted of two factors, namely varieties (Inpari 32, Inpari 33, and Inpari 43) and cultivation systems (monoculture, multi-canopy insert 1, and multi-canopy insert 2). The results showed that the Inpari 43 variety under monoculture cultivation system had the best growth and production response. The variety, cultivation system, or interaction of them do not affect the production of dry milled grain rice. According to the yield projection (no damage by insect), the Inpari 32 variety with a multi-canopy insert 2 cultivation system resulted in the highest production of a dry milled grain of 8.93 tons of hectare.
Keyword: cultivation systems, inserts, production

Judul: Growth and Production of Inpari 32 and Inpari 33 Rice Varieties with IPB 3S Variety Inserts In Multicanopy Cultivation System
Abstrak: Multikanopi padi merupakan teknik penanaman pada petak tanam yang sama menggunakan varietas dengan tinggi tanaman berbeda yaitu varietas pendek dan tinggi. Penelitian ini bertujuan mengkaji pertumbuhan dan produksi padi varietas Inpari 32 dan Inpari 33 dengan sisipan varietas IPB 3S pada sistem budidaya multikanopi. Penelitian dilaksanakan di Kebun percobaan BBPadi Sukamandi, Kecamatan Ciasem, Kabupaten Subang, Jawa Barat. Rancangan penelitian ini menggunakan rancangan kelompok lengkap teracak (RKLT) faktorial dengan dua faktor yaitu varietas dan sistem budidaya. Faktor varietas meliputi Inpari 32 dan Inpari 33 dan faktor sistem budidaya meliputi multikanopi sisip 1, multikanopi sisip 2, dan monovarietas dengan 6 kali ulangan. Hasil penelitian menunjukkan bahwa terdapat interaksi pada peubah pengamatan jumlah anakan umur 6 Minggu Setelah Tanam (MST). Perlakuan varietas berpengaruh terhadap jumlah anakan, panjang malai, jumlah gabah per malai, dan bobot 1000 butir. Sedangkan perlakuan sistem budidaya berpengaruh terhadap jumlah anakan, fotosintesis, dan bobot kering malai. Hasil produksi tertinggi varietas Inpari 32 diperoleh menggunakan budidaya monovarietas (4,26 ton ha-1), sedangkan potensi hasil tertinggi pada varietas inpari 33 dengan budidaya multikanopi sisip 2 (9,55 ton ha-1)., Rice multicanopy is a planting technique on the same planting plot using different plant height varieties, namely short and tall varieties. This study aims to examine the growth and production of rice varieties Inpari 32 and Inpari 33 with the insertion by the IPB 3S variety in the multicanopy cultivation system. The research was carried out at the ICRR (Indonesian Center for Rice Research) Sukamandi, Ciasem District, Subang Regency, West Java. The design of this study used a facktorial complete randomized block design with two factors, namely varieties and cultivation systems. Variety factors include Inpari 32 and Inpari 33 and cultivation system factors include multicanopy insert 1, multicanopy insert 2, and monoculture with 6 replications. The results showed that there was an interaction in the observation of number of tiller at 6 weeks after planting (WAP). Varietal treatment affects the number of tiller, the length of the panicles, the amount of grain per panicle, and the weight of 1000 grains. Meanwhile, the treatment of the cultivation system affected the number of tiller, photosynthesis, and the dry weight of panicles. The highest yields of Inpari 32 varieties were obtained using monovariety cultivation (4.26 tons ha-1), while the highest yield potential in the Inpari 33 variety with multicanopy cultivation of insertion 2 (9.55 tons ha-1).
Keyword: Monovariety, Multicanopy, Varieties

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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