Judul: Pengaruh kondisi lapang dan rumah plastik terhadap pertumbuhan dan hasil nomor seleksi cabai merah (Capsicum annuum L.) pada musin hijan
Abstrak: IPB University Penelitian bertujuan mempelajari pengaruh kondisi lapang dan rumah plastik terhadap pertumbuhan dan hasil 12 nomor seleksi cabai merah pada musim hujan. Penelitian dilakukan di Kebun Percobaan Munjul, Desa Sukamanah, Kecamatan Cisarua, Kabupaten Bogor, berlang- sung dari bulan Oktober 1988 sampai Februari 1989. Loka- si terletak pada ketinggian 650 m di atas permukaan laut dengan jenis tanah Latosol coklat kemerahan...
Keyword: 

Judul: Effect of Mulch Application on Temperature and Groundwater Fluctuations and Red Chili Plant Growth (Capsicum annum L.) on Latosol Dramaga
Abstrak: Cabai merah merupakan bahan pangan penting. Namun upaya pemenuhan bahan pangan ini dihadapkan berbagai tantangan, salah satunya adalah lahan yang terbatas. Pemanfaatan lahan yang terbatas secara optimal sehingga dapat menghasilkan produktivitas yang tinggi antara lain dengan menerapkan teknik budidaya yang sesuai salah satunya yaitu dengan pengaplikasian mulsa plastik. Penelitian dilakukan di daerah dengan curah hujan tahunan yang tinggi seperti di Dramaga, Bogor. Penelitian ini bertujuan mengetahui pengaruh mulsa plastik terhadap karakteristik tanah khususnya terhadap fluktuasi suhu dan kadar air tanah harian serta lebih lanjut pengaruhnya terhadap pertumbuhan dan produktivitas tanaman cabai merah pada Latosol Dramaga. Penelitian ini menggunakan rancangan acak kelompok (RAK) faktor tunggal dengan perlakuan tanpa mulsa (M0) dan mulsa plastik (M1). Data yang diperoleh dianalisis ragam pada tingkat kepercayaan 95% atau taraf nyata 5%. Hasil penelitian menunjukkan suhu dan kadar air tanah harian cenderung lebih tinggi pada perlakuan mulsa plastik. Perlakuan mulsa plastik berpengaruh nyata terhadap suhu dan kadar air tanah. Perbedaan nyata terdapat pada tinggi tanaman pada umur 8 MST dan jumlah daun pada umur 2 MST dan 8 MST. Perlakuan mulsa plastik berpengaruh nyata terhadap bobot buah., Red chili is an important food ingredient. However, efforts to fulfill this food supply are faced with various challenges, one of which is limited land. Utilization of limited land optimally so that it can produce high productivity, among others, by applying appropriate cultivation techniques, one of which is the application of plastic mulch. The study was conducted in areas with high annual rainfall such as in Dramaga, Bogor. This study aims to determine the effect of plastic mulch on soil characteristics, especially on dailiy fluctuations in temperature and daily groundwater content and further effect on the growth and productivity of red chili plants in Latosol Dramaga. This study used a single factor randomized block design (RAK) with non-mulch treatment (M0) and plastic mulch (M1). The data obtained was analyzed at a confidence level of 95% or a real level of 5%. The results showed daily groundwater content tended to be higher on plastic mulch treatment. The treatment of plastic mulch has a real effect on the temperature and content of groundwater. The real difference is in the height of the plant at the age of 8 MST, and the number of leaves at the age of 2 MST and 8 MST. The treatment of plastic mulch has a real effect on the weight of the fruit.
Keyword: rainfall, moisture content, plastic mulch, production, soil temperature

Judul: Kekonsistenan Hamiltonian pada Gerak Gelombang Interfacial
Abstrak: The interfacial wave is an internal wave that occurs at boundary of two layers fluid. It appears because there is difference of mass density between the two layers. The objective of this thesis is to formulate the motion of internal wave with flat base and flat as well as free upper bound surface. The motion equation obtained is a Hamiltonian system. The Hamiltonian in this system is expressed by variable of wave deviation and horizontal component of potential velocity. Under assumption that interfacial wave moves only in one direction, it can be shown that the Hamiltonian depends on the solution of the wave motion equation. The coefficients of the equation depend on the physical characteristics of the two layers of fluid, i.e. thickness and mass density. The numerical results show that Hamiltonian in the system is constant. It is consistent with Hamiltonian characteristic, which does not depend on time.
Keyword: