Judul: Detection of Peanut Seed Respiration in Real-time with NDIR CO2 Sensor for Seed Quality Test Development
Abstrak: Penggunaan benih bermutu merupakan salah satu faktor penting dalam kesuskesan budidaya pertanian. Mutu benih hanya dapat diketahui dengan menguji benih tersebut secara langsung mauapun tidak langsung. Salah satu metode uji tidak langsung yang dikembangkan adalah aktivitas respirasi benih. Namun, pada penelitian sebelumnya, pemanfaatan alat ukur mengalami keterbatasan berupa adanya peluang kebocoran pada saat pengukuran. Pengembangan metode tersebut membutuhkan alat ukur yang lebih presisi. Penelitian ini bertujuan untuk menguji sensitifitas dan pemanfaatan sensor NDIR CO2 sebagai alat ukur aktivitas respirasi benih secara real-time. Objek penelitian yang digunakan adalah benih kacang tanah varietas Kelinci. Penelitian terdiri dari pemahaman sensor NDIR CO2, analisis mutu benih: viabilitas dan vigor benih, dan pengujian laju respirasi. Pembangkitan data penelitian dilakukan dengan 2 percobaan, yaitu penentuan bobot benih uji dan penentuan kadar air uji. Percobaan I dan Percobaan II disusun secara split-plot RKLT. Percobaan I menguji aktivitas respirasi benih berdasarkan bobot benih (25 g, 50 g, dan 75 g) untuk menentukan sensitifitas sensor NDIR CO2. Percobaan II mendeteksi perbedaan laju respirasi benih pada kadar air 8%, 10%, dan 12% dengan bobot sampel berdasarkan hasil percobaan I. Penelitian menunjukkan bahwa penggunaan bobot benih 75 g sebagai sampel dengan kondisi kadar air 12% memiliki sensitifitas dan keterbacaan yang lebih baik dibandingkan taraf lainnya. Namun, pemanfaatan sensor NDIR CO2 belum mampu membedakan aktivitas respirasi benih berdasarkan tingkat viabilitas dan vigor benih., The use of quality seeds is an important factor in the success of agricultural cultivation. The quality of seeds can only be known by testing the seeds directly or indirectly. One of the indirect test methods developed is the respiration activity of seeds. However, in previous research, the use of measuring instruments experienced limitations in the form of opportunities for leaks during measurement. The development of this method requires more precise measuring instruments. This research aims to test the sensitivity and utilization of the NDIR CO2 sensor as a tool for measuring seed respiration activity in real-time. The research object used was the Kelinci variety peanut seed. The research consists of understanding the NDIR CO2 sensor, analyzing seed quality: seed viability and vigor, and respiration rate testing Generating research data was carried out using 2 experiments, namely determining of the weight seed test and determining of the seeds moisture content test. Experiment I and Experiment II were arranged as split-plot Randomized Block Designs. Experiment I tested seed respiration activity based on seed weight (25 g, 50 g, and 75 g) to determine the sensitivity of the NDIR CO2 sensor. Experiment II detected differences in seed respiration rates at moisture contents of 8%, 10%, and 12% with sample weights based on the results of experiment I. Research shows that using a seed weight of 75 g as a sample with a water content of 12% has better sensitivity and readability than other levels. However, the use of NDIR CO2 sensors has not been able to differentiate seed respiration activity based on the level of seed viability and vigor.
Keyword: seed moisture contennht, seed weight, viability test, vigor test

Judul: Development of Rapid Viability Test Using Urine Sugar Analysis Paper for Peanut Seed (Arachis hypogaea L.)
Abstrak: Benih bermutu sangat penting untuk meningkatkan produksi dan mutu kacang tanah. Pengujian mutu benih dapat dilakukan secara langsung maupun tidak langsung. Penelitian ini bertujuan mengembangkan metode pengujian viabilitas secara tidak langsung pada benih kacang tanah menggunakan Urine Sugar Analysis Paper (USAP). Percobaan diawali dengan pembuatan lot benih menggunakan perlakuan penyimpanan selama dua bulan dengan perlakuan beberapa kemasan. Percobaan disusun dengan Rancangan Acak Lengkap (RAL) dengan faktor jenis kemasan yaitu aluminium foil, plastik polypropylene, plastik polyethylene, kertas, dan tanpa kemasan. Lot dengan viabilitas tertinggi dan terendah digunakan untuk percobaan USAP tahap 1. Percobaan USAP tahap 1 dilakukan untuk menentukan metode terbaik dari kombinasi perlakuan ukuran pemotongan benih dan lama perendaman yang disusun menggunakan RAL. Perlakuan ukuran pemotongan benih yaitu benih utuh, dibelah dua, dan dipotong enam. Perlakuan lama perendaman yaitu 0, 3, 6, dan 9 jam. Parameter yang diamati pada USAP yaitu glukosa, protein, dan massa jenis. Metode terbaik digunakan untuk menguji menggunakan USAP pada seluruh lot benih hasil penyimpanan pada tahap 2 USAP. Hasil pengujian didapatkan metode terbaik yaitu ukuran pemotongan benih potong enam pada lama perendaman 6 jam. Parameter protein dan massa jenis dapat membedakan lot benih viabilitas tinggi dan rendah serta berkorelasi positif terhadap uji daya hantar listrik. Kebocoran glukosa tidak terdeteksi sehingga tidak dapat digunakan untuk uji viabilitas dan vigor benih., Quality seeds are very important to increase the production and quality of peanuts. Seed quality testing can be done directly or indirectly. The purpose of this research is to develop an indirect viability testing method for peanut seeds using Urine Sugar Analysis Paper (USAP). The experiment was started by making seed lots using storage treatment. Seeds are stored for two months with the treatment of several packages. The experiment was arranged in a completely randomized design (CRD) with packaging type factors including aluminum foil, polypropylene plastic, polyethylene plastic, paper, and without packaging. The lots with the highest and lowest viability were used for the USAP stage 1 experiment. The USAP stage 1 experiment was carried out to determine the best method from a combination of treatments of seed cutting size and soaking time prepared using CRD. The treatment of seed cutting size was whole seed, halved, and cut into six. The long immersion treatments were 0, 3, 6, and 9 hours. The parameters observed in the USAP were glucose, protein, and density. The best method was used to test all seed lots at stage 2 of the USAP. The test results showed that the best method was the size of cutting the seeds into six pieces at 6 hours of soaking time. Protein and density parameters can distinguish high and low viability seed lots and have a positive correlation with the electrical conductivity test. Glucose leaks were not detected so they could not be used for seed viability and vigor tests.
Keyword: glucose, protein, specific gravity, storage, vigor

Judul: Konstruksi Hukum Grup Kurva Eliptik Atas F3m
Abstrak: Elliptic curves upon F3m can be divided in two cases, i.e. supersingular and nonsupersingular case. Based on group laws on elliptic curves, a new arithmetic upon F3m can be formulated as an addition process of two random points on the curve. This addition process can then be applied to the ElGamal algorithm.
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