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: Identifikasi Kejadian Banjir Rob (Pasang) di DAS Sunter pada 9-13 Januari 2008.
Abstrak: Banjir Rob merupakan fenomena meluapnya air laut ke daratan, istilah tersebut pertama kali dikenal di daerah Semarang. Fenomena banjir Rob dipengaruhi oleh pasang surut air laut. Pasang surut sendiri dipengaruhi gravitasi bulan dan matahari, serta dipengaruhi pula posisi bulan dan matahari terhadap bumi. Banjir ini biasa terjadi pada saat pasang air laut yaitu bertepatan dengan kejadian bulan baru dan bulan purnama. Pada bulan Januari 2008, di wilayah utara Jakarta yang berbatasan dengan laut, fenomena banjir Rob (pasang) melanda kawasan tersebut. Fenomena ini mengakibatkan sejumlah kawasan di wilayah utara Jakarta terendam air laut, hal ini diperburuk dengan penurunan muka tanah Jakarta. Selain dilanda banjir pasang air laut, kawasan utara Jakarta sering dilanda banjir akibat luapan sungai-sungai yang bermuara di Jakarta, salah satu sungai yang menyumbang banjir Jakarta adalah sungai Sunter. Tutupan lahan di DAS Sunter yang sebagian besar berupa pemukiman makin meningkatkan limpasan permukaan ketika terjadi hujan. Tanggal 9-13 Januari 2008 di perairan Teluk Jakarta sedang terjadi pasang air laut karena bertepatan dengan bulan baru yang mengakibatkan terjadinya banjir Rob di beberapa wilayah di Jakarta Utara, termasuk DAS Sunter. Berdasarkan pemetaan banjir Rob di DAS Sunter pada tanggal 9-13 Januari 2008 diketahui bahwa daerah yang tergenang air laut yaitu Kalibaru dan Marunda dengan tinggi genangan 48-72 cm. Luas genangan maksimum terjadi pada tanggal 11 Januari 2008 yaitu sebesar 66.000 m2. Pada tanggal 9-13 Januari, DAS Sunter tidak ikut menyumbangkan limpasan permukaan yang dapat menyebabkan banjir karena nilai limpasan permukaan berkisar 0-3,03 mm. Sehingga kejadian banjir pada tanggal 9-13 Januari 2008 di DAS Sunter hanya berasal dari pasang air laut. Kata Kunci : Banjir Rob, Pasang-Surut, Limpasan Permukaan, DAS Sunter.
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