Judul: Endophytic Fungi in the Control of Pathogen Fusarium oxysporum in Chili Plants (Capsicum annuum L.)
Abstrak: Chili (Capsicum annuum L.) is an important crop which has economic value. Cultivation of chili has a risk due to attack by pathogens. Alternative effort that can be used is using endophytic fungi as biological agents. Endophytic fungi are fungi that live in plant tissue. Many endophytic fungi are able to produce antibiotic compounds that active against bacteria and pathogenic fungi. The antimicrobial compounds produced are able to protect plant from infections. This study aims to determine endophytic fungi which has potential to control Fusarium oxysporum. Literature study begins with collect data from related book and scientific journal. the writing stage consists of several stages, are problem formulating, collecting data, analysing data, and giving conclusion with suggesting. The study shows that endophytic fungi can control F. oxysporum growth. The most effective endophytic fungus on in vitro are, Mucor sp. (73,4%), Neoscytalidium sp. (73,09%), Rhizopus sp. (69,6%), Helicomyces spp. (68,5%), and Penicillium sp. (66,4%). In vivo showed that Penicillium sp. can inhibit the growth of F. oxysporum in chili with a disease severity percentage of 2,78%.
Keyword: alternative, biological agents, potencial

Judul: Abundance and Potency of Endophytic Fungi to Suppress Yellow Leaf Curl Disease in Chilli Pepper (Capsicum annuum L.).
Abstrak: Incidence of yellow leaf curl diseases caused by Pepper yellow leaf curl begomovirus (PepYLCV) has become a major problem in chilli pepper growing area, especially in Java and Sumatra since early 2000. Disease incidence in the field may reach 20 % to 100% and the disease was obviously recognized by its unique symptoms involving bright yellow mosaic, mottle, curling, and stunting. A research was conducted to explore the potency of endophytic fungi as an alternative strategy to suppress PepYLC disease. Research activities consisted of 3 parts, i.e. (1) Isolation of endophytic fungi collected from chilli pepper plants at endemic area in Sleman, Yogyakarta; (2) Pathogenicity assay using chilli pepper seeds, and (3) Efficacy of selected endophytic fungi to suppress disease incidence. The result showed that diversity of endophytic fungi isolated from unsymptomatic plants were significantly higher than those from infected plants. There were 19 isolates of species identified from unsymptomatic plants; whereas 13 isolates from infected plants. Based on pathogenicity assay using 17 selected isolates, the endophytic fungi could be differentiated into 2 groups, i.e. pathogenic (13 isolates) and non-pathogenic (4 isolates). Further screening of non-pathogenic isolates showed that 4 isolates might have a potential as plant growth promoting fungi (PGPF) and 2 isolates, identified as Cercospora nicotianae and Pleosporaceae, might be recommended as bio-control agent. Endophytic fungi isolated in this study having potency as biocontrol agent was taken from low abundance population C. nicotianae was singleton and has potency as biocontrol agent for PepYLC disease.
Keyword: biocontrol agens, geminivirus, yellow leaf curl

Judul: Pemodelan pola arus di Teluk Jakarta dengan dan tanpa reklamasi pantai dengan metode beda hingga eksplisit pada bulan Desember 1996
Abstrak: Dewasa ini pengembangan pantai di belaban utara Pulau Jawa sedang dilakukan sebagai upaya untuk mengantisipasi seluruh kegiatan sosial ekonomi masyarakat di kawasan tersebut, salah satu pengembangan pantai tersebut adalab reklamasi Pantai Utara Jakarta. Reklamasi pantai tersebut sedikit banyak akan mempengaruhi dinamika perairan, terutarna terhadap pola arus di Teluk Jakarta. Penelitian ini bertujuan untuk : (1). Membangun model numerik pola arus di Perairan Teluk Jakarta bila dengan dan tanpa reklarnasi pantai dengan menggunakan metode beda hingga eksplisit, dan (2). Membuat simulasi dari model pola arus tersebut. Pemodelan pola arus ini diharapkan dapat membantu dan memberikan informasi baik secara langsung maupun tak langsung tentang kondisi perairan sebelum dan setelah reklamasi serta untuk keperluan studi analisis mengenai dampak lingkungan (AMDAL). Pemodelan pola arus di Teluk Jakarta tersebut dilakukan untuk 48 jam simulasi yang dimulai pada tanggal 9-10 Desember 1996. Komputasi model dilakukan dengan menggunakan PC 486DX4-I00 milik UPT Komputer Laboratorium Oseanografi Jurusan Geofisika dan Meteorologi 1TB Bandung. Masing-masing komputasi model memakan waktu sekitar 1. 5 jan1. Pola arus dimodelkan pada beberapa kondisi, yaitu: dengan dipengaruhi angin dan pasang surut (pasut), tanpa pengaruh angin dan tanpa pengaruh pasut. Hal ini dilakukan untuk melihat peranan angin dan pasang surut pada pola arus. Data masukan untuk keperluan pemodelan ini yaitu data pasut pada kedua batas terbuka, data arab dan kecepatan angin, data koefisien gesekan dasar dan angin, serta data batimetri. Untuk keperluan verifikasi diperlukan data pengamatan pasut di dalam daerah model.
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