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: 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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