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: Aplication of Infrared Sensor for Viability  Evaluation on Tetrazolium Peanut Seed Test (Arachis hypogea L.)
Abstrak: Pengujian viabilitas benih menggunakan uji tetrazolium merupakan salah satu metode penentuan viabilitas benih dengan mengevaluasi tingkat warna merah yang terbentuk pada benih. Penentuan tingkat warna merah pada benih ini dapat menggunakan alat sensor infrared. Penelitian ini bertujuan menguji alat sensor infrared untuk menentukan intensitas warna secara kuantitatif dalam uji tetrazolium serta menentukan korelasi alat sensor infrared dengan pengujian mutu secara fisiologis. Percobaan disusun menggunakan rancangan kelompok lengkap teracak dengan faktor tunggal yaitu tingkat viabilitas benih berdasarkan uji daya berkecambah masing-masing adalah 78,9%, 70,7% dan 40,0%. Hasil penelitian menunjukkan bahwa pengujian cepat viabilitas menggunakan tetrazolium pada benih kacang tanah dapat digunakan karena menunjukkan adanya korelasi antara pola pewarnaan yang dihasilkan dengan pengujian fisiologis T50, kecepatan tumbuh, dan bobot kering kecambah normal dengan nilai koefisien korelasi masing-masing sebesar -0,611, 0,589, dan 0,602. Alat sensor infrared untuk uji tetrazolium pada benih kacang tanah dapat digunakan untuk mengukur intensitas warna., Seed viability testing using tetrazolium test is one method of determining the viability of the seed by evaluating the level of red color formed in the seed. Determination of the level of red color in this seed can use infrared sensor tool. This study aims to test infrared sensor tools to determine the color intensity in tetrazolium test and determine the correlation of infrared sensor tools with physiological testing. The experiment was prepared using a complete randomized group design with a single factor namely the viability rate of V1, V2, and V3 seeds with germination power are 78.9%, 70.7% and 40.0% respectively. The results showed that rapid viability testing using tetrazolium in peanut seeds can be used because it shows a correlation between the resulting coloring patterns with physiological tests T50, speed of germination, and seedling dry weight with correlation coefficient values of -0.611, 0.589, and 0.602 respectively while in infrared sensor applications for tetrazolium testing on peanut seeds need to be refined in order to detect color levels and patterns according to structure seeds so that more accurate data is generated.
Keyword: color intensity, speed of germination, T50

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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