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: Analysis of Climate Factors Influence in Attacking Area of Leaf Blight Disease in Rice Plants (Case Study in Subang District, West Java).
Abstrak: Penyakit hawar daun bakteri (HDB) merupakan salah satu faktor pembatas penyebab penurunan produksi padi. Faktor iklim merupakan salah satu faktor yang mempengaruhi perkembangan serta penyebaran bakteri penyebab penyakit hawar daun. Tujuan dari penelitian ini adalah untuk menganalisis pengaruh unsurunsur iklim terhadap luas serangan penyakit hawar daun bakteri. Analisis statistik yang digunakan adalah analisis regresi kuadratik untuk mengetahui pengaruh setiap unsur iklim dan analisis regresi berganda untuk mengetahui pengaruh seluruh unsur iklim. Luas serangan HDB merupakan variabel terikat, sedangkan unsur-unsur iklim sebagai variable bebas. Faktor iklim yang memiliki pengaruh paling besar adalah kelembaban pada lag 1 dengan nilai koefisien determinasi (R2) = 30.4% serta persamaan LS = 19947 - 514.1 RH + 3.323 RH2. Persamaan yang didapat dari hasil analisis regresi berganda adalah LS = 2047 + 0.197 CH + 11.8 RH - 103 T, sedangkan nilai koefisien determinasi (R2) mencapai 35.3 %. Iklim merupakan salah satu faktor yang mempengaruhi luas serangan penyakit hawar daun bakteri.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Climatic factors, Bacterial leaf blight, Regression, HDB, Xanthomonas oryzae, Analisis regresi kuadratik

Judul: Embriogenesis ikan buta (Astyanax fasciatus)
Abstrak: Ikan buta Astyanax fasciatus adalah spesies ikan unik dari famili Characidae yang menempati perairan dalam gua di Wilayah La Cueva Chica-San Luis Potasi-Mexico. Ikan ini memiliki mata yang tereduksi (Blind Cavefish) dan warna kulit merah muda, pucat serta mengkilap.
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