Judul: Klasifikasi Tanah pada Transek Lereng dan Kaitannya dengan Pertumbuhan Tanaman Jati Unggul Nusantara (Tectona Grandis L.F.) di Cibungbulang, Kabupaten Bogor
Abstrak: Soil are characterized by its properties, vertically and horizontally. The soil variability has caused different soil fertility. Each soil could be classified by a soil classification system. This reseach was conducted with the objective to analyze soil morphological, physical, and chemical characteristics and to classify in family category. The other objective is to understand the relationship between soil characteristics and tree growth of Tectona grandis. Field research was done in Cibungbulang, Bogor District. Physical and chemical soil analysis was done in the Laboratory of Soil Science and Land Resources, Bogor Agricultural University. Soil profile was made on a slope planted with Jati Unggul Nusantara (JUN) teak tree. The slope is divided into three parts: upper slope (P-1), middle slope (P-2), and down slope (P-3). Fifty plant samples which has optimal growth were collected around the location of soil profile. The morphological characteristics of each plant are analyzed. The result shows that soil texture on three soil profiles were dominated by clay and it has medium to slow permeability. Soil pH on upper slope (P-1) is classified as neutral whereas soils in middle part (P-2) and down part (P-3) slope are acid. Base saturation on P-1 is classified as very high, while in P-2 and P-3 are classified as low and very low. Total-N and organic-C on three samples are low to very low. Available-P on three profiles are high to very high. Variability of the three soil profile’s were caused by parent material as well as by potition of slope. P-1, P-2, and P-3 are classified in soil family category as Typic Peleudalf, very fine, compound, active, isohyperthermic; Typic Dystrudept, very fine, compound, active, isohyperthermic; and Typic Hapludult, very fine, compound, semi-active, isohyperthermic. Soils from each profile location could support teak tree growth, the best plant growth is found on P-1, then P-3 and P-2. Trunk diameter of harvesting plant is classified as low category. Soil from limestone sediment which has high pH and base saturation could give better growth for JUN teak tree.
Keyword: Jati Unggul Nusantara (JUN), soil classification, chemical characteristic, phisical, Soil morphological

Judul: Hubungan antara peninggi hutan jati (Tectona grandis L. F.) dengan sifat-sifat tanah dan vegetasi lantai hutan dalam penentuan kualitas tempat tumbuh
Abstrak: Tujuan penelition adalah untuk mengetahui variasi, acnosi dan jumlah jenis tumbuhan bawah pada vegetasi Lantai hutan jati; hubungan antara vegetasi lontoi hu- tan dengan sifat-sifat tanah hutan jati; hubungan anta- 8 sifat-sifat tanah dengan peninggi hutan jati; hubung- an antara sifat-sifat tanah, vegetasi lantai hutan dan peninggi dalam penentuan kualites tempat tumbuh hutan jati. Fenelitian dilakukan di hutan Jati Rogaloh, Ngareng- an i Wilayah PH Peti den hutan Kedung Jati di Wilayah Semarang, Jawa Tengah selamo 2 (dua) musim. Feng- amatan musim hujan dilekukan pada bulan Februari dan Maret 1985 dan musim kemarau dilakukan pada bulan Agustus sampai September 1985. Pengukuran yang dilakukan pada setiap musim meliputi faktor-faktor peninggi pohon, si- fat-sifat tanah yang terdiri atas pli tanah, kandungan organik, kandungan 1 total, bosa-basa Ca, lig, K, Na, yang dapat dipertukarkan, kapasitas tukar kation, kejo- un basa, kandungan H, tekstur tanah (kandungan pasir..dst
Keyword: Soil physicochemical properties, Tectona grandis

Judul: Pengklonan gen VP28 Penyandi Viral Protein-28 dari virus white spot syndrome sebagai langkah awal produksi vaksin rekombinan udang penaeid
Abstrak: Usaha produksi udang dalam negeri saat ini sedang mengalami kendala akibat serangan penyakit white spot syndrome virus (WSSV) pada jenis udang windu (Penaeus monodon). WSSV yang termasuk virus DNA berukuran besar dapat menginfeksi udang dan berbagai jenis crustaceae lainnya. Virus ini merupakan patogen yang sangat ganas dan paling serius menyerang udang. Serangannya begitu cepat, sangat sulit dihentikan dan dapat mematikan 100% udang peliharaan dalam waktu 3-10 hari setelah munculnya gejala klinis. Serangan virus ini juga telah menghancurkan industri udang di berbagai negara. Infeksi WSSV ditandai dengan adanya bintik putih atau bercak putih pada eksoskeleton dan epidermis terutama pada bagian karapas udang. Hingga saat ini belum ada cara tradisionalyang efektif mencegah dan menanggulangi penyakit ini.
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