Judul: Perubahan Beberapa Sifat Fisik Tanah dan Pertumbuhan Tanaman Kedelai (Glycine Max L. Merril) akibat Pemberian Kapur dan Bahan Bumat dari Air Gambut pada Tanah Latosol
Abstrak: The purpose of this study is to see the effect of lime and humic substance application on: 1) soil aggregate stability, soil water characteristic (water content at pF1, pF2, pF2.54 and pF4.2), 2) Water movement on unsaturated soil, such as advance of wetting front, soil conductivity and difusivity, and 3) the growth of soya bean. This study was conducted on March 1999 until January 2000 at soil physic laboratory of IPB and Puslittanak for soil physical characteristic measurement and green house of IPB baranang siang for crop growth experiment. Soil sample used in this study is Latosol and humic substance used were obtained from peat soil from the area of PT. SAC Nusantara Mesuji.
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Judul: Pengaruh pemberian pupuk organik night soil dan beberapa ukuran agregat tanah terhadap sifat fisik tanah dan produksi kacang kedelai (Glycine max. L. Merr) varietas Wilis pada tanah latosol (Oxic dystropept) dari Darmaga
Abstrak: Tanah sebagai sumber daya alam selalu dimanfaatkan manusia untuk kesejahteraan hidupnya. Untuk mengimbangi laju pertumbuhan penduduk dan perkembangan perekonomian dengan laju pertumbuhan produksi pertanian, maka usaha intensifikasi, diversifikasi, dan ekstensifikasi dibidang pertanian merupakan tindakan yang perlu dilakukan. Dalam usaha peningkatan produksi pertanian dengan intensifikasi dan ekstensifikasi perlu adanya pengelolaan yang memperhatikan teknik konservasi tanah dan air serta selalu mempertimbangkan kondisi fisik, kimia, dan biologi tanah. Adapun tujuan penelitian ini untuk melihat pengaruh pemberian pupuk organik Night Soil dan beberapa ukuran agregat tanah terhadap sifat fisik tanah antara lain; bobot isi tanah, total porositas tanah, kadar air tersedia, distribusi ukuran pori, hantaran hidrolik tanah dan produksi kacang kedelai (Glycine max. L. Merr). ... Penelitian ini dilaksanakan di rumah kaca dan laboratorium Fisika Tanah, Jurusan Tanah, Fakultas Pertanian Institut Pertanian Bogor. Adapun tahap kegiatan di rumah kaca adalah; persiapan dan penanaman tanaman pada 36 pot dengan tanah Latosol samapai panen.
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Judul: Antibodi anti-idiotipe sebagai kandidat vaksin rabies, Anti-idiotype andibody as a rabies vaccine candidate
Abstrak: Anti rabies serum (ARS) called antibody 1 (Ab1) was used as the antigen to immunize laying chickens. Anti-Ab1 chicken immunoglobulins (IgY), the antiidiotype antibodies against rabies (Ab2) was isolated from chicken blood every week for ten weeks. The highest titer of Ab2 was found at the third week after the last immunization. Immunoglobulin Y was separated by means of ammonium sulfate precipitation, then dialyzed using PBS pH 8.0 for 24 hours at 2 – 8 oC and purified using affinity chromatography column for IgY lead the proteins molecules with 185,000; 95,000 and 49,000 dalton in weigth. Purified IgY was used to immunize New Zealand White rabbit and the antibody response (Ab3) was detected using Agar Gel Precipitation Test (AGPT). The Ab3 showed specific reaction with Ab2 as well as rabies virus. Interestingly, Ab2 and rabies virus express partial identity reaction. This lead the insight, that not all parts of Ab2 are internal image of rabies virus. The efficacy of Ab3 was detected using enzyme linked immunosorbent assay (ELISA) and indicated that the level of Ab3 titer is protective according to WHO standard (more than 0.5 IU/ml). The conclusion of this study is the anti-idiotype antibody can induce protective immune response against rabies virus and can be used as an alternative for rabies anti-idiotype vaccine. Key words : anti-idiotype vaccine, antibody, rabies
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