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Registros recuperados: 12 | |
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Santana, Dalva Luiz de Queiroz; Auer, Celso Garcia; Rocha, Ana Lucia Jarretta Loyola; Marques, Elaine. |
Alguns ipês (Tabebuia alba, T. chrysotricha e T. heptaphylla) apresentam folhas jovens deformadas, na forma de enrolamento foliar, em viveiros e na arborização urbana. Uma avaliação foi feita em plantas destas espécies, com idade variando entre 1 mês e 3 anos, no Viveiro Municipal da Barreirinha e em árvores da arborização urbana da cidade de Curitiba, PR. Coletaram-se galhos apicais com sintomas, em cada planta, para a identificação dos insetos associados. Foram encontrados, associados às folhas deformadas, insetos pertencentes às ordens Coleoptera, Hymenoptera, Hemiptera e Diptera. No entanto, foi constatado que o enrolamento do lombo foliar do ipê é provocado por Trioza tabebuiae (Hemiptera: Psylloidea). |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ipê-amarelo; Folha; Praga Trumpet tree; Leaf; Pest. |
Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/245 |
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Basilio, Paula Rachel Rabelo Corrêa; Auer, Celso Garcia; Santos, Álvaro Figueredo dos; Higa, Antonio Rioyei. |
Sphaeropsis sapinea is one of main pathogens that causes losses in commercial plantations of Pinusspp. Studies for control based on genetic resistance can be done by inoculating different monosporic isolates onpine populations and selectioning the resistant individuals. This work describes a methodology for pycnidia production in vitro and S. sapinea monoconidial cultures, using an agar-water medium with sterile pine needles. Four S. sapinea isolates were tested e pycnidia and mature conidia were observed after 14 days of incubation, under continuous fluorescent light, in BOD, at 25 °C. Pycnidia were triturated in sterile water and conidia germinated after two hours of incubation in water-agar, in BOD, at 25 °C. Germinated conidia formed colonies which... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inoculum; Pathogen; Pine. Inóculo; Patógeno; Pínus.. |
Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/139 |
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Bizi, Rafaela Mazur; Grigoletti Júnior, Albino Garcia; Auer, Celso Garcia. |
The objective of this study was to find effective fungicides against eucalypt powdery mildew. Fungicides tested were chlorothalonil, fenarimol, sulfur, tebuconazole, propiconazole, benzothiazole, pyraclostrobin + epoxiconazole and triadimenol. These fungicides were sprayed on Eucalyptus benthamii seedlings in a greenhouse infested with powdery mildew. Severity was evaluated at 9, 16, 23, 30 and 37 days after spraying, classifying symptoms observed with a scale 0 (symptoms absent) to 4 (strong symptoms). Best treatments were obtained with pyraclostrobin + epoxiconazole, propiconazole + trifloxystrobin and triadimenol, with an infection index average of 0.39, 0.63 and 1.01, respectively. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical control; Disease; Eucalyptus benthamii controle químico; Doença; Eucalyptus benthamii. 1. |
Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/234 |
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Registros recuperados: 12 | |
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