http://repository.ipb.ac.id:80 The IPB digital repository system captures, stores, indexes, preserves, and distributes digital research material of Bogor Agricultural University http://repository.ipb.ac.id/handle/123456789/7589 Modifikasi Suhu Tanah untuk Kesesuaian Tumbuh Tanaman Soba (Fagopyrum esculentum Moench) di Daerah lklim Tropika Basah Soil temperature modification for growth adaptability of buckwheat (Fagopyum esculentum Moench) in human tropics Fibrianty Buckwheat ios a subtropical crop which produces flour, it can be grown well in tropical region at upland but lowland wich has higher air temperature the growing is suppressed with lower yield. An attempt has been done to modify soil temperature buckwheat cultivation and to analyze the influece of different soil temperature pattern to the root growth and the yield of buckwheat. The experiment was conducter during April-Juy, 2003 at Ciawi, Bogor district which locsted at 400 m above sea level. The Split Plot Design with three replications was employed with the main plot was two population densities, viz no mulch (M0), straw mulch (M1), and a sheet of transparent plastic (M2). Two cultivars of buckwheat, viz Kitawasesoba (V1) and Hitachi Akisoba (V2) were planted in sequence. The results showed that the soil temperature under M2 always the highest, while the lowest was under M0 in the morning and under M1 during noon and afternoon. There were no interaction between popupation densities and mulch to the tield. The straw mulch of M1 produced the highest yield of 2.60 ton ha(-1) and 3.42 ton ha(-1) for Kitawasesoba and Hitachi Akisoba, respectively. Soba adalah tanaman subtropis yang menghasilkan tepung, tanaman ini dapat tumbuh dengan baik didataran tinggi pada daerah tropis namun di dataran rendah dengan suhu udara yang tinggi menyebabkan produksi yang rendah. Penelitian ini bertujuan 1) Mengkaji pola suhu tanah pada bebagai cara modifikasi budidaya tanaman soba dan 2) Mrnganailis pengaruih perbedaan pola suhu tanah terhadap pertumbuhan akar dan pertumbuhan, perkembangan serta hasil tanaman soba di iklim tropika basah. Penelitian dilaksanakan di kebun percobaan Pusat Manajemen Pengembangan Sumber Daya Manusia Pertanian (PMPSDMP), Kecamatan Ciawi, Kabupaten Bogor, lokasi terletak pada 106 derajat 51' BT dan 06 derajat 38' LS, pada ketinggian 400 m dpl dengan jenis tanah liat. Penelitian dilaksanakan pada bulan April-Juli 2003. Penelitian dilakukan dengan Rancangan Petak Terpisah dengan 3 ulangan sebagai petak utama adalah populasi tanaman, masing-masing 160 tanaman m2(P1) dan 200 tanaman m2(P2) dan anak petak adalah jenis mulsa mulsa, masing-masing tanpa mulsa (M0), mulsa jerami (M1) dan mulsa lembaran plastik transparant (M2). Penelitian dilakukan terhadap 2 varietas tanaman soba, yaitu Kitawasesoba (V1) dan Hitachi Akisoba (V2). Hasil penelitian menunjukkan bahwa suhu tanah tertinggi pada pagi, siang dan sore hari dicapai di bawah M1 sedangkan suhu terendah di bawah M0 pada pagi hari dan di bawah M1 pada siang dan sore hari. Tidak ada interaksi antara populasi dan mulsa terhadap hasil tanaman dan M1 memberikan hasil yang tertinggi, masing-masing 2.60 ton ha(-1) pada Kitawasesoba dan 3.42 ton ha(-1) pada Hitachi Akisoba. Thu, 01 Jan 2004 00:00:00 GMT http://repository.ipb.ac.id/handle/123456789/8517 Potensi Cendawan Asal Akar Rumput, Teki dan Tanah Perakaran Bambu untuk Pengendalian Penyakit Akar Gada pada Tanaman Brokoli Asniah Clubroot is the most destructive disease on crucifers in Indonesia. The existing control measures, include biological control do not provide satisfactory result. The objective of the study was to explore endophytic fungi of grasses, sedge, and bamboo rhizosperic soils, which can suppress clubroot disease caused by Plasmodiophora brassicae Wor. in broccoli. This research consisted of two main parts: (1) Exploration of root endophytic fungus from grass, sedge, and bamboo rhizosperic soils, (2) Biological control clubroot with root endophytic fungus isolates of grass, sedge, and bamboo rhizosperic soils. There were six species of endophytic fungi examined in this study, e.g Fusarium oxysporum, F. solani, Nigrospora sp., Curvularia lunata, Chaetomium globosum and Paecilomyces sp. which successfully colonized broccoli root endophytically. Two endophytic fungi Chaetomium globosum and Curvularia lunata suppressed clubroot disease significantly and increased the growth of broccoli. Application of the biocontrol agents by seed coating could increase the antagonistic effect of the biocontrol compared with the application by propagule suspension. Tue, 01 Jan 2008 00:00:00 GMT http://repository.ipb.ac.id/handle/123456789/46911 Efektivitas sistem sertifikasi pengelolaan hutan di hutan rakyat (studi kasus di kabupaten Wonogiri provinsi Jawa Tengah dan kabupaten Kulon Progo provinsi D. I. Yogyakarta) Daniyati, Erlina Thu, 01 Jan 2009 00:00:00 GMT http://repository.ipb.ac.id/handle/123456789/52748