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Showing 1 to 20 of 43 for “"Cercospora"”.
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Variabilidade fisiológica de isolados de Cercospora coffeicola
… à definição de metodologia de trabalho com Cercospora coffeicola. Em testes in vitro e in vivo, estudou-se a variabilidade de 60 isolados do patógeno, obtidos de três regiões e de dois sistemas de cultivo em Minas Gerais. No laboratório, avaliaram-se a área abaixo da curva de crescimento …
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Cercospora sojina: over-winter survival and fungicide resistance
Historically, frogeye leaf spot (FLS; caused by Cercospora sojina) of soybean has been observed more frequently in the southern U.S. than the north central U.S. However, in recent years, FLS field observations have been on the increase in the north central U.S., including Illinois. To better …
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The Role of G-Protein Signaling in Pathogenesis in Cercospora zeae-maydis
<p>Gray leaf spot, caused by Cercospora zeae-maydis, is one of the most destructive foliar diseases of maize worldwide. C. zeae-maydis orients hyphal growth towards stomata (stomatal tropism) and forms infectious structures (appressoria) that are necessary for successful infection. Although some …
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Epidemiology, Yield-Loss Prediction, and Control of Cercospora Leaf Spot of Cowpea (Vigna Unguiculata)
Made available in DSpace on 2014-12-10T23:32:48Z (GMT). No. of bitstreams: 1 7405687.pdf: 2068387 bytes, checksum: f1bc246241e6e5dc430078bce1c5fcb7 (MD5) Previous issue date: 1973
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Simple sequence repeat polymorphism screening for resistance to Cercospora Arachidila in groundnut(Arachis Hypogaea)Genotypes
… foliar disease Early Leaf Spot (ELS) caused by Cercospora arachidicola. C. arachidicola causes yield losses which on interaction with other pests and/ or diseases and favourable weather conditions aggravate yield losses in Sub–Saharan Africa. The utilisation of chemical control methods is not …
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Filogeografia de espécies de Cercospora associadas ao crestamento foliar e a mancha púrpura da soja
Muitas espécies de Cercospora são patógenos generalistas. A versatilidade das espécies de Cercospora associadas ao Crestamento Foliar de Cercospora (CFC) e Mancha Púrpura da Semente (MPS) na soja parece ser historicamente subestimada. Neste trabalho, foram montados bancos de dados moleculares …
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Molecular Basis of Pathogenesis and Host Determination in Cercospora sojina: from Phenotypic to Genotypic Patterns
<p>Frogeye leaf spot (FLS), caused by Cercospora sojina, is an important and recurrent disease of soybean in many production regions. Genetic resistance is potentially one of the most cost-effective and sustainable strategies to control FLS. However, C. sojina has already demonstrated the ability …
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Characterisation of phytoalexin accumulation in maize inoculated with Cercospora zeina, the causal organism of grey leaf spot disease
… disease of Zea mays (maize) that is caused by Cercospora zeina. It thrives in sub-tropical climates and causes devastating crop losses of up to 60% in southern Africa where maize is grown as a staple food source. Phytoalexins are low molecular weight anti-microbial bio-chemicals that are …
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Epidemiología de la mancha de hierro del café (Cercospora coffeicola B. y Ck.) en las regiones norte y pacífico de Nicaragua
Se estudió el patosistema mancha de hierro-café a diferentes altitudes y bajo condiciones de campo para describir sus epidemias y determinar el periodo critico, su efecto sobre la defoliación y la producción de café cereza y la influencia del clima sobre su desarrollo. Se seleccionaron lotes en …
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Soybean disease research on green stem disorder, effects of seed treatments on Sclerotinia stem rot, and resistance to Cercospora leaf blight
… protection to plants at later growth stages. Cercospora leaf blight (CLB) and purple seed stain (PSS) caused by Cercospora kikuchii are important diseases of soybean worldwide. While there are no commercially available cultivars advertised for resistance to PSS or CLB, sources of resistance …
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Image-Based Analysis of Fungal-Damaged Soybeans
… system was developed to classify asymptomatic, Cercospora spp., and Fusarium spp. The classification accuracy for asymptomatic seed was 91.6%, Cercospora spp. 68%, and Fusarium spp. 95%. A multimedia computer-based soybean visual information and grading system was developed. The research …
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Quantification of Fungicide Resistance in Cercospora sojina Populations and Development of a Fungicide Application Decision Aid for Soybean in the Mid-Atlantic U.S.
… region are frogeye leaf spot (FLS) and Cercospora leaf blight. In addition to crop rotation and host resistance, foliar fungicides, often with quinone outside inhibitor (QoI) active ingredients, are used to manage these soybean foliar diseases. Yield benefits of foliar fungicides have …
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Evaluación de alternativas de manejo para la mancha de hierro (Cercospora coffeicola Berk y cook) en el cultivo del café (Coffea arabica L.) en fincas de los departamentos de Granada, Masaya y Carazo
… alternativas para el manejo de mancha de hierro (Cercospora coffeicola Berk &Cook) en el cultivo del café (Coffea arabica L.). El estudio se desarrolló en parcelas establecidas en cada finca, estas parcelas estaban constituidas por 300 plantas por tratamiento, donde se llevaron a efecto los …
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Etiology and control of some fruit diseases of avocado (Persea Americana Mill.) at Westfalia Estate
Cercospora spot disease of avocados caused by Pseudocercospora purpurea (Cke) Deighton is described for the first time in South Africa, where it was found to be the most important pre-harvest fruit disease at Westfalia Estate, in the North Eastern Transvaal (longitude 30°10' and latitude 23°45'). …
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Micobiota fitopatogência das plantas daninhas Bidens pilosa e Bidens subalternans no Brasil
… (Bs): Colletotrichum sp. (Bs) (antracnose), Cercospora bidentis (Bp e Bs), Cercospora maculicola (Bp e Bs) (manchas foliares); Entyloma bidentis (Bp e Bs), Entyloma compositarum (Bp) e Entyloma guaraniticum (Bp e Bs) (carvão branco); Golovinomyces cichoracearum var. cichoracearum (Bp e Bs) …
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Inheritance of resistance to gray leaf spot of corn
… for resistance to gray leaf spot (caused by Cercospora zeae-maydis) in 1989 and 1990, were crossed with the susceptible inbreds FR1141 and/or FR20 and populations of four to six generations were produced. In 1991, the populations were evaluated for gray leaf spot severity at Urbana, Illinois …
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Understanding and managing Frogeye Leaf Spot through network-based modeling in soybean
Frogeye Leaf Spot (FLS), caused by Cercospora sojina, poses a significant threat to soybean production, with yield losses of 30 - 60%. Traditional mass-action models assume homogeneous mixing, which rarely holds in real fields and limits their ability to gain insights into FLS management. To …
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Efecto de la densidad poblacional y fertilización sobre dos enfermedades foliares en cuatro variedades de Ajonjoli (Sesamum indicum L.)
… foliares (Xanthomonas campestris pv sesami y Cercospora sesami) en dos densidades poblacionales y diferente fertilización. El ensayo se sembró en época de postrera, 1992, en Malpaisillo, región II. Las evaluaciones realizadas fueron: Intensidad de las enfermedades foliares, respuesta de las …
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