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: Soybean (Glycine max (L.) Merrill) Seed Longevity Prediction Using Several Vigour Test Methods
Abstrak: Kedelai (Glycine max L.) merupakan salah satu komoditas penting di Indonesia. Metode yang tepat untuk menduga viabilitas berdasarkan nilai daya berkecambah setelah melewati periode tertentu dalam penyimpanan sangat penting untuk memastikan benih kedelai yang sampai ke tangan konsumen (petani) masih memiliki mutu yang baik. Penelitian ini bertujuan mendapatkan satu metode yang mampu menduga daya simpan benih kedelai. Penelitian dilaksanakan di Laboratorium Ilmu dan Teknologi Benih IPB. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) terdiri dari faktor lot benih yang tersarang pada periode simpan. Faktor pertama adalah lot benih kedelai yang terdiri atas 6 taraf yaitu Dena 1 (tahun 2019), Devon 1 (tahun 2019), Detap 1 (tahun 2019), Anjasmoro (tahun 2019), Gepak Kuning (tahun 2019), dan Argomulyo (tahun 2019). Faktor kedua adalah periode simpan dengan 7 taraf yaitu 0, 1, 2, 3, 4, 5 dan 6 bulan. Benih kedelai dari berbagai varietas yang digunakan sebagai lot benih memiliki daya berkecambah awal berkisar 84,25% - 94,25%, dapat mempertahankan viabilitasnya hingga 73,50% - 79,50% setelah disimpan selama 6 bulan. Kondisi kadar air sebelum penyimpanan berkisar 8,51% - 9,94% dan 8,41% - 9,51% pada 6 bulan penyimpanan. Kondisi suhu dan RH ruang penyimpanan berkisar 20,2 ± 2 ºC dan 49 ± 2% dengan kemasan benih berupa plastik polypropylene (PP) 0,8 mm. Ekstrapolasi pada grafik penurunan daya berkecambah menunjukkan benih kedelai yang diuji memiliki variasi daya simpan antara 8,5 – 11,8 bulan untuk penurunan hingga daya berkecambah 65% atau 7,0 – 8,9 bulan untuk penurunan hingga daya berkecambah 70%. Radicle emergence (RE) yang diamati pada 42 jam merupakan tolok ukur yang paling potensial untuk menduga daya simpan benih kedelai dengan nilai koefisien korelasi sebesar 0,6033 untuk menduga daya simpan hingga daya berkecambah menjadi 65% dan 0,6442 untuk menduga daya simpan hingga daya berkecambah menjadi 70%., Soybean (Glycine max L.) is one of the important commodities in Indonesia. The right method to estimate viability based on the value of germination after a certain period of storage is very important to ensure that soybean seeds that reach consumers (farmers) still have good quality. This study aims to obtain a method that can estimate the seed longevity of soybean. The research was carried out at the Seed Science and Technology Laboratory of IPB. This study used a completely randomized design (CRD) consisting of several nested seed lots in the storage period. The first factor is the soybean seed lot which consists of 6 levels, namely Dena 1 (in 2019), Devon 1 (in 2019), Detap 1 (in 2019), Anjasmoro (in 2019), Gepak Kuning (in 2019), and Argomulyo (in 2019). The second factor is the storage period with 7 levels, namely 0, 1, 2, 3, 4, 5, and 6 months. Soybean seeds of various varieties used as seed lots have initial germination rates ranging from 84.25% - 94.25%, can maintain their viability up to 73.50% - 79.50% after being stored for 6 months. Conditions of water content before storage ranged from 8.51% - 9.94% and 8.41% - 9.51% at 6 months of storage. The temperature and RH conditions of the storage room ranged from 20.2 ± 2 ºC and 49 ± 2%
Keyword: expired date, radicle emergence, rapid aging, storage, viability

Judul: Trichomonas Gallinae Penyebab Trichomonosis Pada Unggas
Abstrak: Trichomonas gallinae adalah protozoa yang bergerak aktof dengan keempat flagella yang mempunyai layar dan pada salah satu sisinya terdapat membran seperti sirip ikan yang berombak. Spesies dari genus Trichomonas ini mempunyai arti penting pada unggas, karena dapat menyebabkan infeksi pada alat pencernaan bagian atas.
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