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 pupuk organik cair pada produksi dan serapan hara tanaman Caisim (Brassica juncea) varietas Tosakan pada Latosol Darmaga
Abstrak: Indonesia is situated in tropical region with high rainfall and temperature. These high rainfall and temperature affect the soil fertility through intensive weathering and leaching process. Leaching process could lead the decrease of basic cations and other important elements for plant. Further it makes soils in Indonesia acid and infertile. One of ways to improve the soil fertility is the application of fertilizer. The fertilizers could be applied through leaf and soil. Leaf fertilizer is applied by using foliar feeding method directly to the leaf so the essential nutrient absorbed by itself through the leaf. Leaf fertilizer is in liquid form, enrich by macro and micro nutrients. The objectives of this research were to determine the effect of liquid organic fertilizer to the yield, nutrient content and nutrient uptake of nitrogen (N), phosphorus (P) and potassium (K) of the caisim (Brassica juncea). This research also aims to determine the effectiveness of fertilizer that is measured by Relative Agronomic Effectiveness (RAE). The experiment was conducted in the greenhouse of University Farm in Cikabayan, Bogor. Analysis concerning nutrient content and plant uptake of N, P and K were carried out in Chemical and Soil Fertility Laboratory, Agricultural Faculty, IPB. Greenhouse expriment was set up in Completely Randomize Design (CRD) with seven treatments and four replications The treatments were as follows: control, standard (S), 0,75PO+0,5S, 0,75PO+0,75S, 1,0PO+0,5S, 1,0PO+0,75S, dan 1,25PO+0,5S. Standard was the treatment using Urea, SP-36 and KCl fertilizers with the rates 200kg/ha, 300kg/ha and 100 kg/ha respectively. PO in the treatments label referred to leaf organic fertilizer while S referred to standard. As for liquid organic fertilizer, the recommended rate was 5 L/ha. The result showed the addition liquid organic fertilizer (PO) and standard fertilizer in lower dose (0,5S and 0,75S) effective in improving the yield of caisim. Nutrient uptake (N and K) in these treatments (0,75PO+0,75S and 1,0PO+0.75S) tended to have higher value than the standard. Meanwhile nutrient uptake (P) in combine dose of PO and S have higher value than standard. In RAE value, the combine dose gave a higher tendency than the standard, whereas this combine dose of treatment (1,0PO+0,5S) resulted in higher value than those of others treatments. Based of the results and considering the RAE values, it suggested that treatment of 1,0PO+0,5S was recommended as fertilizer dose that should be applicated.
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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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