Judul: Pengaruh Zeolit Dan Biosoil Pada Sifat Kimia Tanah Dan Produksi Tanaman Caisim Bangkok (Tosakan).
Abstrak: Several methods are able to increase soil and crop productivity. Zeolith and biosoil application are one of methods to enhance plant growth and yield. The aim of this research was to evaluate effect of zeolith and biosoil to chemical characteristic of soil (pH, cation exchange capacity, exchangeable cation, NO3 - and NH4 +) and yield of Caisim Bangkok (Tosakan) in Regosol Ciomas Bogor. This research was layout by randomize complete design with two factor. The first factor was 5 level of zeolith: 0 ton/ha, 7.5 ton/ha, 15 ton/ha, 22.5 ton/ha, dan 30 ton/ha. The second factor was 2 level of biosoil : 0 l/ ha dan 20 l/ha, with 3 replications. This research conducted with two steps. The first step was incubation research and the second step was green house research. This research shows that application of zeolith significantly increased Na-dd and cation exchange capacity (KTK) in the rate of Z4 and tend to increase exchangeable Ca and Mg, and to decrease exchangeable K and to increase soil base saturation (KB). Biosoil application tend to decrease exchangeable Ca and Mg, but tend to increase exchangeable K and Na, cation exchange capacity (KTK) and soil base saturation (KB). However, zeolith and biosoil application, tend to decrease NO3 and NH4 ions. Zeolith application tend to decrease wet and dry weight leaves and root of caisim, whereas biosoil tend to increase wet and dry weight of the leaves, but significantly decreased wet weight of the root and tend to decrease dry weight of root. Zeolit significantly decreased N concentration and N uptake, and tend to decrease P and K contain and uptake of P and K whereas biosoil tend to increase N, P and K concentration and N, P and K uptake.
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Judul: Pengaruh Pemberian Biosoil terhadap Sifat Kimia  Tanah serta Pertumbuhan dan Produksi Tanaman  Caisim (Brassica chinensis)
Abstrak: Several methods are able to increase soil productivity. One of them is biosoil (a soil conditioner with contains 8 % of humic acid extracted from leonardite). Biosoil plays important role in improving physical, chemical and biological properties of soil. The application of the substance increases soil fertility thus increases fertilization efficiency. Greenhouse experiment was conducted using Latosol from Darmaga. The aim of this research was to evaluate effect of biosoil on chemical properties of soil as well as the growth and yield of caisim (Brassica chinensis). The experiment consisted of 5 treatments and 3 replications, and was arranged in completely randomized design. The treatments applied biosoil 0, 25, 50, 70, 100 l/ha which equivalent to 0, 0.06, 0.13, 0.19, 0.25 ml/pot. Fertilizers applied were 500 mg/pot urea, 375 mg/pot SP36 and 250 mg/pot KCl. The result of experiment indicated that the effects of biosoil on available P and K and soil pH and CEC were not significant. On the other hand, the effect of biosoil on exchangeable Al was significant. Increasing exchangeable Al and low soil pH after application of biosoil caused caisim did not respond to biosoil application. Increasing dosage of biosoil tended to decrease wet and dry bweight of plant. In addition, the effect of biosoil on P and K contents of plant were not significant,while on N content was significant.
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Judul: Infectious laryngo tracheitis pada unggas
Abstrak: Infectious Laryngo Tracheitis merupakan penyakit pada unggas yang disebabkan oleh virus yang mempunyai sasaran saluran pernapasan bagian atas Penyebab penyakit Infectious Laryngo Tracheitis Univers (ILT) adalah virus yang termasuk kelompok virus Herpes sering disebut Tarpeia avium. Virus tersebut tersusun dari inti asam deoksi ribonukleat yang dilengkapi dengan pembung- kus yang merupakan derivat dari lemak serta mempunyai garis tengah antara 195-250 nano meter. Pada temperatur kamar virus tersebut dapat bertahan selama 15 hari dalam keadaan tanpa pengawetan. Virus penyebab Infectious Laryngo Tracheitis mempunyai kepekaan terhadap zat kimia golongan pelarut lemak seperti: phenol dan kresol. Induk semang definitip penyakit Infectious Laryngo Tracheitis adalah ayam, tetapi burung merak, itik dan kalkun pernah dilaporkan dapat terinfeksi. Mammalia dan golongan rodensia merupakan hewan yang tahan terhadap infeksi penyakit ini. Pada manusia penyakit Infectious Laryngo Tracheitis diduga mempunyai hubungan dengan timbulnya gangguan neuralgia yang bersifat sub-akut akibat infeksi virus Herpes jenis lain yang disebut virus Sub-acute Myelo Optico Neuropathi (virus SMON).
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