Judul: Water movement in various soil pore characteristics and their relation with N, P, K concentration
Abstrak: In dryland, water movement plays an important role in crop water relation, air, and nutrient availability. In the soil, water movement is highly affected by soil pore characteristics, such as total porosity, pore size di stribution, and pore stability. This research aimed to: (1) Determine the relationship between water movement and soil pore characteristics (2) Determine the relationship model between rainfall and water movement and soil moisture dynamic in dryland, (3)Assess the effect of water movement and soil moisture dynamic on soil moisture and nutrient distribution and (4) Determine soil pore characteristics that affect soil nutrient concentration. This research was conducted in the field and laboratory.
Keyword: West Java, Nutrient Concentration, Soil Pore Characteristics, Transient Water Movement, Water Fluxes, Soil Nutrients

Judul: Dinamika Air Dalam Tanah Dan Hubungannya Dengan Sifat-Sifat Struktur Tanah Pada Latosol Semplak
Abstrak: Water in soil is important for plant growth as nutriment, nutriment solvent, and nutriment dissolve flow in soil. Volume and water distribution in soil affected by some factor. The factor e. g : soil structure. Soil structure related with soil pore distribution, which is affected water flow and distribution water in soil. In fact, soil structure has many variant both spatial and temporal. Many variant of soil structure caused the high variant pore distribution. Variant of soil structure could happen because of the different land cultivate. The aim of this research are to the dynamics of water in soil at ex-rice field land and dry land and the ationship with soil structure characteristics. This research starting with soil selection which have different soil stucture characteristic (aggregate stability, aggregate distribution, and pore distribution), taking soil sample, soil analysis at the laboratory, experiment and measurement in spacious, and analyse data. Soil moisture ex-rice field land always higher than dry land. Soil moisture ex-rice field land and soil moisture dry land will be higher at deeper soil layer above layer. Dynamics of change soil moisture beetwen ex-rice field land and also dry land caused by different of rain distribution also soil physical characteristic. Relation link among of soil physical characteristic to soil moisture dynamics seen different each other. Soil aggregate stability index have negative correlation with soil moisture. Excelsior soil aggregate satibility index, make soil moisture decreased, and conversely. Total porosity and micropore have positive correlation with soil moisture. Excelsior total porosity and micropore, make soil moisture increase. But the correlation of macropore to soil moisture on ex-rice field land differ from dry land, that is increase of macropore to dry land the degrade soil moisture, whiel on the ex-rice field land raising of macropore can be raise soil moisture.
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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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