Maize Leaf Disease
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Reaction of maize hybrids to Northern corn leaf blight and common rust, and chemical control of Northern corn leaf blight
RESUMO: A helmintosporiose e a ferrugem comum estão entre as principais doenças fúngicas que afetam a produção do milho. Os objetivos desse trabalho foram avaliar a suscetibilidade de dez híbridos de milho a helmintosporiose e a ferrugem comum e verificar a eficiência de fungicidas no controle de Exserohilum turcicum. No primeiro experimento utilizara
Arq. Inst. Biol.. Publicado em: 21/10/2019
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2. Reaction of popcorn lines (s7) cultivated in distinct phosphorus levels to Bipolaris maydis infection
RESUMO O milho-pipoca apresenta alta suscetibilidade a helmintosporiose (Bipolaris maydis) (h-Bm). O melhoramento genético desta cultura deve priorizar a resistência a h-Bm e desenvolver cultivares que ofereçam maior sustentabilidade ao cultivo, principalmente em solos com escassez de fósforo (P). O P-mineral normalmente é suprido à cultura do milho pe
Summa phytopathol.. Publicado em: 2019-03
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3. Genetic resistance of maize inbred lines to anthracnose leaf blight
Abstract The objectives of this study were to evaluate the resistance of maize inbred lines to anthracnose leaf blight (Colletotrichum graminicola Ces.), and to estimate genetic parameters associated with resistance. Sixteen lines (S5) were evaluated for resistance to anthracnose leaf blight in three experiments, in a randomized block design with four replic
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-03
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4. Localization of Pantoea ananatis inside lesions of maize white spot disease using transmission electron microscopy and molecular techniques.
The etiological agent of maize white spot (MWS) disease has been a subject of controversy and discussion. Initially the disease was described as Phaeosphaeria leaf spot caused by Phaeosphaeria maydis. Other authors have suggested the existence of different fungal species causing similar symptoms. Recently, a bacterium, Pantoea ananatis, was described as the
Tropical Plant Pathology. Publicado em: 2011
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5. Potencial para "screening" de doencas foliares em milho atraves da fluorescencia da clorofila.
2001
REUNIAO TECNICA ANUAL DO MILHO,46.; REUNIAO TECNICA ANUAL DO SORGO,29.. Publicado em: 2011
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6. Comportamento de hibridos de milho em relacao a Phaeosphaeria Maydis em diferentes epocas de plantio.
Treze hibridos de milho (Zea mays L.) foram avaliados quanto a resposta a infestacao natural de Phaeosphaeria maydis, procurando relacionar a severidade da doenca com produtividade de hibridos em diferentes epocas de plantio. Foram conduzidos quatro experimentos no municipio de Goianesia, GO, em blocos completos ao acaso, com tres repeticoes. Os hibridos for
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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7. FREQUÊNCIA E ÉPOCA DE APLICAÇÃO DE FUNGICIDAS E SEUS EFEITOS EM HÍBRIDOS DE MILHO (Zea mays L.) / FREQUENCY AND TIME OF APPLICATION OF FUNGICIDES AND ITS EFFECTS IN THE HYBRIDS MAIZE (Zea mays L.)
Among the major diseases with potential for reducing the final yield of maize (Zea mays) are common rust (Puccinia sorghi), and Spot Blotch (Exserohilum turcicum). Seed companies offer hybrids with levels of disease resistance in the shoots, however, these have demonstrated the need for alternatives that help to maintain the low rate progress of diseases. Gi
Publicado em: 2011
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8. Potenciais hospedeiros alternativos para o fitoplasma e o espiroplasma, agentes do enfezamento do milho, e alterações bioquímicas em plantas infectadas pelo espiroplasma / Potencial hosts for maize mollicutes, agent of corn stunt, and biochemical changes in plants infected by the spiroplasma
The maize bushy stunt and corn stunt are relevant diseases caused, respectively, by a phytoplasma and a spiroplasma (Spiroplasma kunkelii). Both kinds of stunting were reported in Brazil in the beginning of the 1970´s and became economically important in the beginning of the 1980´s, with the adoption of new techniques for maize cultivation. Although this p
Publicado em: 2010
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9. Efeitos da irrigaÃÃo com esgoto tratado sobre o sistema solo-planta (milho) e induÃÃo da supressividade a doenÃas causadas por nematÃides / Effects of irrigation with treated sewage on soil â plant(maize) system and inducement of suppressiveness to diseases caused by nematodes
The treated effluents have great potential for application in agriculture, due to certain levels of nutrients and organic material that can improvement the chemical characteristics of soils and thus induce suppressiveness of soils to plant diseases caused by phytopathogens. The objective this word was to provide technical subsidies for the fertirrigation of
Publicado em: 2009
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10. Quantification of damages and reaction of resistance of commercial mayze hybrids to Cercospora zeae-maydis / QuantificaÃÃo de Danos e ReaÃÃo de resistÃncia de Hibridos Comerciais de Milho a Cercospora Zeae-maydis
With the objective of quantifying the damages caused by mayze gray leaf spot, establish the existing relationship between these damages and the severity of the disease, the resistance of commercial maize hybrids to Cercospora zeae-maydis and determining which is the best timing of evaluation of the disease, four experiments were conducted in two sowing seaso
Publicado em: 2007
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11. Agressividade de isolados de Cercospora zeae-maydis em genótipos de milho / Aggressiveness of Cercospora zeae-maydis isolates in maize genotypes
Maize (Zea maydis L.) is of great social, cultural and economical importance in Brazil and in the world. Maize diseases are the main factors that reduce crop yield. Gray leaf spot, caused by the fungus Cercospora zeae-maydis Tehon &Daniels, is one of the most important diseases in many countries. Given that the disease can be controlled by the use of resista
Publicado em: 2006
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12. Nitrogen and micronutrients fertilization on yield and occurrence of leaf diseases on maize / Adubação nitrogenada e de micronutrientes na produtividade e incidência de doenças foliares em milho
Doses elevadas de nitrogênio podem retardar a fase de maturação e aumentar o risco de infecção da planta devido ao tempo de exposição no campo e a predominância de substâncias de baixa massa molecular presentes no tecido. O efeito do cobre, no controle de patógenos, deve-se à pequena quantidade requerida pelos microrganismos em relação às plant
Publicado em: 2006