Judul: Controlled Deterioration Test to Estimate Soybean Seed Storability.
Abstrak: Physiologycal quality of soybean seed was easily deteriorated during storage. It was caused by high protein content, permeable seed coat and high humidity in storage condition. Therefore, it was important to maintain the soybean seed quality to fulfill the increasing requirement of soybean seed. Estimation of the seed storability could be done by carrying out the laboratory tests. One of the testing method is controlled deterioration test. The objectives of the research were to determine seed moisture content and period at the controlled deterioration treatment which could be used to evaluate soybean seed viability, and to find the appropriate controlled deterioration test for estimating storability of soybean seed. The research was conducted at the Horticulture Crops Quality Control Laboratory and the seed storage warehouse PT. BISI International, Tbk, Kediri since October 2012 until February 2013. The research consists of three experiments, i.e. controlled deterioration test for soybean seed, controlled deterioration test by time series pattern and soybean seed storage at room temperature. Wilis and Detam-1 variety seeds were used as experimental material. The first experiment was arranged in a Completely Randomized Design with two factors and four replications. Three levels of moisture content (15%, 17.5% and 20%) and four levels of controlled deterioration test period (0 hour, 8 hours, 16 hours and 24 hours) were used as treatments. The second experiment was arranged in a Completely Randomized Design with one factor and four replications. Sixteen levels of deterioration period (1–16 hours) were used as treatments. The moisture content, germination, vigour index and speed of germination were observed after controlled deterioration test. The third experiment was arranged in a Completely Randomized Design with one factor and four replications. Sixteen levels of actual storage periods (1–16 weeks) were used as treatments. The moisture content, germination, vigour index and speed of germination were observed every week during the sixteen weeks storage periods. The experiment results showed that there were significant differences for germination, vigour index and speed of germination after controlled deterioration test. The results also showed that the proper controlled deterioration test to evaluate Wilis variety seed was at 17.5% moisture content for 16 hours and controlled deterioration test for Detam-1 variety seed was at 15% moisture content for 16 hours. There were significant correlations of physiological quality variables and the actual at 16 weeks storage periods, indicating that controlled deterioration test period could describe storage period. The equation for estimating seed storability vigour (VDS) developed based on the relationship between controlled deterioration period (t) and the storability vigour was - t, where a and b are the constant values. The equation for estimating seed storability (DS) developed based on the relationship between storage periods and germination after controlled deterioration ( det ) was - det , where a and b were the constant values. Verification result showed that the VDS equations could be used to estimate germination and speed of germination. Qualitative verification showed that the actual observed variables were in the simulation interval confidence (1-α 0.95 . These results were confirmed by quantitative verification showed the chi square value lower than chi
Keyword: seed modeling, seed quality, rapid ageing test, vigour index

Judul: Pemodelan Penyimpanan Benih Kedelai (Glycine max (L.) Merrill) pada Sistem Penyimpanan Terbuka
Abstrak: Soybean seed viability declined rapidly due to the high protein content and high humidity of the tropical environment. Packaging techniques could be applied to maintain high viability of the soybean seeds. This research aimed to study the behavior of soybean seeds during storage with different packaging and soybean seeds varieties, and to develop model of soybean seed storage. The study was conducted in three stages : (1) soybean seed behaviour during storage, (2) development of seed storage model, and (3) simulation and verification of the model. The first stage consisted of two experiments: (1) soybean seed storage and testing with different types of packaging (aluminum foil, polypropilen plastic and sacks plastic), arranged in completely randomized design with five replications, and (2) seed storage and testing of four soybean varieties (Detam-1, Anjasmoro, Tanggamus and Wilis), arranged in completely randomized design with five replications. The results showed that the seed behaviour during storage period was affected by seed moisture content and environmental conditions, so that seed moisture content can be used as input model and seed storability vigor (VDSDB) and seed conductivity (VDSDHL) as model output. The models developed were: (1) model for estimating seed storability vigor based on seed viability equations (soyVios-1 model), and (2) dynamic model of seed storage for soybean (soyVios-2 model). The Seed Storability Vigor Prediction Model by using permeability of packaging and variety, moisture content, temperature and initial viability as model input could logically predict the seed storability vigor (VDS) and storage period. Simulation of Seed Storability Vigor Prediction Model with Microsoft Excell 2010 software and the same input model showed that soyVios-1 model could also predict logically the seed storability vigor (VDS) and storage period. Simulation of Soybean Seed Storage Dynamic Model by using the Model Construction Layer-Stella (MCLS) with permeability and surface area of packaging, relative humidity (RH), temperature, initial moisture content and initial viability as input model could predict logically the seed moisture content, seed storability vigor (VDSDB), seed conductivity (VDSDHL), and storage period.
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Judul: Peranan nyamuk sebagai vektor Dirofilaria immitis pada anjing
Abstrak: Dirofilaria immitis adalah cacing jantung yang hidup dalam ventrikel kanan dan arteri pulmonalis dari anjing; namun secara alamiah cacing ini dapat ditularkan kepada kucing, rubah dan karnivora yang lain. Cacing ini termasuk kelas Nematoda, famili Filariidae dan genus Dirofilaria, dengan bentuk tubuh langsing, berwarna putih dan daur hidupnya tidak langsung. Penyebarannya meliputi daerah beriklim sedang dan tropis seperti Timur Jauh, Pasifik, Afrika Utara dan Tengah, Australia serta Amerika Utara dan Selatan. Di Indonesia cacing ini jarang ditemukan. Nyamuk dari genus Anopheles, Culex, Aedes dan Mansonia merupakan vektor yang utama dari cacing jantung ini. Beberapa jenis pinjal seperti Ctenocephalides atau Pulex ternyata juga mampu menjadi vektor, meskipun kejadiannya jarang ditemukan. ...
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