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	Provedor de dados Agronomy (2) PFB - Pesquisa Florestal Brasileira (1) Autor Gualtieri, Sonia Cristina Juliano (3) Anese, Simoni (1) Arduin, Marcos (1) Carpanezzi, Fernando Bertol (1) Grisi, Patrícia Umeda (1) Imatomi, Maristela (1) Jatobá, Luciana de Jesus (1) Miranda, Maria Augusta Ferraz Machado (1) Novaes, Paula (1) Mais... Palavra-chave Germination (2) Agroecossistemas (1) Agroecosystems (1) Agronomia - Fisiologia vegetal allelopathy (1) Agronomia e fisiologia vegetal allelopathy (1) Early growth. Controle de plantas daninhas (1) Echinochloa crusgalli (1) Ecofisiologia Vegetal Pau-incenso (1) Ecology (1) Floodplains Ecologia (1) Growth (1) Herbicide Agronomia (1) Inhibition (1) Plant Ecophysiology Cheesewood tree (1) Áreas alagáveis (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2015 (2) 2014 (1) País Brazil (3) Idioma Inglês (2) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Allelopathy of aqueous leaf extracts from the invasive alien tree Pittosporum undulatum on germination and growth of barnyard grass PFB - Pesquisa Florestal Brasileira Carpanezzi, Fernando Bertol; Gualtieri, Sonia Cristina Juliano. Barnyard grass (Echinochloa crusgalli (L.) P. Beauv.) is a herbicide-resistant weed that brings negative impacts to rice crops and threatens floodplains biodiversity worldwide. This study aimed to investigate allelopathic influences of extracts from Pittosporum undulatum Vent. (cheesewood) leaves on barnyard grass. Leachates in concentrations of 20%, 15%, 10%, 5% and 2.5% (w/v), aqueous extracts from powdered leached and non-leached leaves (10%, 7,5%, 5%, 2.5% and 1.25% for both), coumarin solution at 0.6 mM and original Roundup ® in concentration according to the label information were prepared. Petri-dishes germination bioassays, with counting at each 12 hours, allowed to determinate both germinability and germination rate; polyethylene glycol (PEG 6000)... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecology; Plant Ecophysiology Cheesewood tree; Echinochloa crusgalli; Agroecosystems; Floodplains Ecologia; Ecofisiologia Vegetal Pau-incenso; Echinochloa crusgalli; Agroecossistemas; Áreas alagáveis. Ano: 2014 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/599 Phytotoxic effects of aqueous leaf extracts of four Myrtaceae species on three weeds Agronomy Imatomi, Maristela; Novaes, Paula; Miranda, Maria Augusta Ferraz Machado; Gualtieri, Sonia Cristina Juliano. Research on allelopathic interactions can be useful in the search for phytotoxins produced by plants that may be employed as natural herbicides. The aim of this study was to assess the phytotoxic action of aqueous leaf extract of Blepharocalyx salicifolius, Myrcia multiflora, Myrcia splendens and Myrcia tomentosa on the germination and development of three weeds. The working hypothesis was that leaf extracts of Myrtaceae may negatively influence the development of weed species. Aqueous leaf extracts at 5 and 10% (g mL-1) were tested on the germination and growth of Euphorbia heterophylla, Echinochloa crus-galli and Ipomoea grandifolia and compared with the herbicide oxyfluorfen and distilled water (control). The most extracts caused pronounced delays in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agronomia e fisiologia vegetal allelopathy; Germination; Growth; Herbicide Agronomia. Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19079 Phytotoxic potential of Drimys brasiliensis Miers for use in weed control Agronomy Anese, Simoni; Gualtieri, Sonia Cristina Juliano; Grisi, Patrícia Umeda; Jatobá, Luciana de Jesus; Arduin, Marcos. This study aims to evaluate the phytotoxicity potential of leaf and root extracts of Drimys brasiliensis on the germination and seedling growth of Panicum maximum and Euphorbia heterophylla and its influence on metaxylem cell size in the seedling roots of the latter specie. The leaf and root extracts were fractionated by partition chromatography, and the hexane and ethyl acetate fractions obtained from each organ were evaluated at different concentrations for phytotoxic activity in several bioassays. In seedling growth tests, we compared the effects of these fractions with the herbicide oxyfluorfen. The hexane fraction of the root extracts showed a higher inhibitory potential on the germination and growth of weeds and reduced the average size of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agronomia - Fisiologia vegetal allelopathy; Inhibition; Germination; Early growth. Controle de plantas daninhas. Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19476 Registros recuperados: 3 Primeira ... 1 ... Última

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