Judul: Pengaruh Residu Insektisida Applaud 10 WP Tehadap Pe4rkembangan Populasi Aphis glycines Matsumura Pada Tanaman Kedelai (Glycine max (L) Merril)
Abstrak: Tujuan dari penelitian ini adalah untuk mengetahui pengaruh residu beberapa perlakuan insektisida Applaud 10 P terhadap perkembangan populasi A. glycines. Dalam penelitian digunakan A. glycines sebagai serangga penelitian, tanaman kedelai sebagai tanaman inang dan Insektisida Applaud 10 WP sebagai perlakuan. Penelitian Ini menggunakan Rancangan Aeak Lengkap dengan model linear. Penelitian dilaksanakan dengan lima perlakuan insektisida dan setiap perlakuan diulang lima kali. Perlakuan tersebut adalah 0, 1, 10, 100 dan 1000 ppm, penempatan pot-pot penelitian dilakukan secara acak. Dilakukan analisis keragaman dan untuk melihat perbedaan antar perlakuan dilakukan uji Leda Nyata Jujur. Penelitian ini dilakukan di rumah kaca Jurusan Hama dan Penyakit Tumbuhan, pada bulan Juli sampai Agustus 1987. Insektisida Applaud 10 WP lebih berpengaruh terhadap populasi daripada kematian A. glycines. Pengaruh penekanan perkembangan populasi adalah dalam jangka waktu yang lama. ...
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Judul: Pengaruh Plant Growth Promoting Rhizobacteria terhadap Biologi dan Statistik Demografi Aphis glycines Matsumura (Hemiptera: Aphididae) pada Tanaman Kedelai
Abstrak: On various plants, Plant Growth Promoting Rhizobacteria (PGPR) application known can suppress the development of plant pest population. This research aimed at PGPR effects against biology and statistic demographic of Aphis glycines Matsumura (Hemiptera: Aphididae) on soybean plant. This research conducted in the Department of Plant Protection, Faculty of Agriculture, Bogor Agricultural University. PGPR application, which consists of Bacillus polymyxa and Pseudomonas fluorescens can extend second instar nymphs stadia and life cycle of A. glycines. PGPR application also can effect to statistic demographic of Aphis glycines. The gross reproduction rate, net reproduction rate, and intrinsic growth rate of A. glicines on PGPR application plant is lower than non PGPR application plant. Moreover, PGPR application plant can extend long generation and doubling time of A. glycines. The use of PGPR can inhibits the development of A. glycines population on soybean plant.
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Judul: Photosensor producing based on ferroelectric material of Ba0,5Sr0,5TiO3 doped by Ferrium Oxide (Fe2O3) on a P-Type Silicon Substate Si (100) applied as a digital camera with a single pixel image sensor
Abstrak: Thin film Ba0,5Sr0,5TiO3 (BST) doped with Fe2O3 was grown on p-type silicon substrate (100) using chemical solution deposition (CSD). It used the solvent 2-methoxyethanol with annealing temperature of 850°C and the doping treatment Fe2O3 of 2.5, 5, 7.5, 10 % of the mass formed BST. Pure BST had the highest absorption of 600 nm of light wavelength. Additions Fe2O3 moves highest absorption in the range of 560 nm. Fe2O3 addition was strengthening thin film sensitivity to the effects of light. In general, doping Fe2O3 10% was result the best absorbance and current-voltage of BST thin film. Electrical properties of thin films BST include dielectric, photoconductivity, and dissipation energy. Based on the current-voltage (I-V) analysis, pure BST and doped BST showed photodiode properties. Dielectric values obtained in the range from 23.32 to 243. Based on electrical conductivity data and energy dissipation, BST thin films have shown photodiode characteristics and are therefore suitable as light sensors. The image sensor in a digital camera is also a light sensor. This BST thin film has been scientifically proven to be a light sensor and also it can be applied as an image sensor. This is a novelty image sensor based on thin film Ba0.5Sr0.5TiO3.
Keyword: barium strontium titanate, thin film, photodiode, image sensor, digital camera