Judul: Kalibrasi Kadar Hara Tanaman Kelapa Sawit (Elaeis guineensis) Belum Menghasilkan (TBM) dengan Menggunakan Sekat Pertumbuhan Terbaik.
Abstrak: Fertilization must be suited with nutrient availability level in soil. It can be estimated by plant analysis. Nutrient content of plant is determined by the nutrient requirement of the crop and the nutrient supplying power of the soil. The value of plant analysis in quantifying nutrient requirements depends on careful sampling and analysis and using test that are calibrated with plant response (growth and yiaeld).The aim of calibration is to describe results of plant analysis in simple terms and to make simple the process of making fertilizer recommendation according to nutrient content cathegory in plants. The growth variables used for calibration were length of frond,leaf area and average of frond number which is adjusted to plant age. Calibration result of N, P, K, Ca, Mg, Cu and Zn in young oil palm plant indicated that nutrient sufficient range (NSR) of K, P,Mg, Ca, and Zn were wider than criteria of Von Uexkull (1992) and criteria of Jhon, Jr. et al. (1991). The nutrient sufficient range of N was lower but wider than criteria of Von Uexkull (1992) and criteria of Jhon, Jr. et al. (1991). In addition, the nutrient sufficient range of Ca was more narrow compared with criteria of Von Uexkull (1992) but wider than of criteria Jhon, Jr. et al. (1991).
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Judul: Optimasi dosis nitrogen dan kalium pada bibit kelapa Sawit ( Elaeis guenensis Jacq) di Pembibitan Utama
Abstrak: The need of oil palm seedlings increase with the growing demand from farmers and plantation companies. The use of high quality seedlings is one of the requirements to obtain a high productivity. Thus the proper fertilization of seedlings planted at the main nursery should be done. This research aimed to determine the growth response of oil palm seedlings to various doses and to determine the optimum dose of nitrogen and potassium fertilizer on oil palm seedlings. The experiment was carried out at Cikabayan Experimental Station at IPB Darmaga Campus, Bogor, West Java. The experimental design used was factorial randomized block design with three replications. The treatment consisted of two factors, the first factor was N fertilizer and the second factor was K fertilizer. N fertilizer consists of four levels ( N1 = 0 g, N2 = 8.35 g, N3 = 16.7 and N4 = 33.4 g/seedling) and K fertilizer consists of four levels ( K1 = 0 g, K2 = 10.9 g , K3 = 21.8 g, and K4 = 43.6 g/seedling). The result of the experiment shows that N and K fertilizer increase the plant height, number of frond and stem diameter. Base on the plant height, the optimum dose of N fertilizer is 22.27 g and K fertilizer is 35.13 g during six months in the main nursery.
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Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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