Judul: Analysis of Climate Factors on the Incidence of Bacterial Leaf Blight Disease in Rice Plants
Abstrak: Penyakit hawar daun bakteri merupakan hama dan penyakit tanaman padi yang menganggu produksi padi di Kabupaten Indramayu, Karawang, dan Subang yang merupakan tiga kabupaten dengan produksi padi tertinggi di Provinsi Jawa Barat. Perkembangan penyakit hawar daun bakteri dipengaruhi oleh kondisi iklim seperti suhu udara, curah hujan, dan kelembapan udara. Penelitian ini bertujuan menganalisis kondisi iklim Kabupaten Indramayu, Karawang, dan Subang terhadap perkembangan penyakit hawar daun bakteri. Analisis menggunakan model Climex 4.0, regresi linear berganda, dan nonlinear polinomial. Nilai ecoclimatic index wilayah kajian bernilai 33 hingga 98 yang berada pada klasifikasi kurang sesuai hingga sangat sesuai menunjukkan kondisi iklim wilayah kajian bervariasi untuk perkembangan penyakit hawar daun bakteri mulai dari kurang sesuai hingga sangat sesuai. Sedangkan nilai composite match index sebesar 0,6-0,9 tergolong tinggi menunjukkan kondisi iklim wilayah kajian sangat mirip dengan kondisi iklim Kabupaten Ciamis. Sehingga Kabupaten Indramayu, Karawang, dan Subang memiliki potensi perkembangan penyakit hawar daun bakteri yang tinggi seperti Kabupaten Ciamis. Faktor iklim kelembapan relatif memiliki pengaruh paling besar terhadap luas serangan penyakit hawar daun bakteri, dimana peningkatan kelembapan relatif akan meningkatkan luas serangan penyakit hawar daun bakteri.
Keyword: bacterial leaf blight, CLIMEX, composite match index, ecoclimatic index, Xanthomonas oryzae

Judul: The Influence of Climate on Hawar Leaves spread Bacterial diseases (BLB) in rice plants (Case Study of Karawang District, West Java).
Abstrak: Plant disease is a limiting factor of plant production in Indonesia, food crops, horticulture and plantations. The disease on rice plant causes physiological disorders in plants, are caused by fungi, bacteria, phytoplasmas, virus, viroid, nematodes and higher plants. Rice is an important plant for food in Indonesia. One of the diseases that can damage the rice plants is Bacterial Leaf Blight (BLB). One of the factors that influence the growth of Hawar Leaves Bacterial are climatic factors. This research aims to determine how large the climatic factors influence on the growth of Bacterial Leaf Blight. The analysis of study area is in Karawang district. Analysis used is quadratic regression analysis for rainfall, temperature, and humidity. Multiple linear analyses for all factors are analyzed. Then the quadratic regression analysis equation that describes the relationship of air temperature with an area of hawar bacterial attack in the year 2005-2009 with a R2 value of 1.6% is the attack area (ha) = - 4259 + 378.0 T - 7.72 T2. Rainfall factor that has a relationship of closeness with a broad attack on the 2005-2009 BLB with R2 values of 7.8% with his analysis is the area of attack equation (ha) = 167.3 + 2.033 CH - 0.003645 CH2. Closeness of the relationship with the humidity factor extensive Hawar Leaves attack in the year 2005-2009 to the value of the coefficient of determination (R2) of 0.3% and has an affinity Attack Area (ha) = 677 - 8.95RH + 0.0503 RH2. Climatic is one of the factors that affect the wide attack Hawar Leaves Bacterial, there are still some other factors that need to be included in the regression model to improve results and better predictions.
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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