Implicações do uso de herbicidas em plantas de cafeeiro micorrizadas

• Ano de defesa: 2014
• Autor(a) principal: Carvalho, Felipe Paolinelli de
• Orientador(a): Ferreira, Francisco Affonso
• Banca de defesa: Ferreira, Evander Alves , Machado, Aroldo Ferreira Lopes
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Doutorado em Fitotecnia
• Departamento: Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de
• País: BR
• Palavras-chave em Português: Cafeeiro; Fungos micorrízicos; Herbicidas
• Palavras-chave em Inglês: Coffee; Mycorrhizal fungi; Herbicides
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA
• Link de acesso: http://locus.ufv.br/handle/123456789/1249

Better quality of seedlings can be obtained using arbuscular mycorrhizal fungi and, thus, improving initial growth during the formation of coffee plantation. In this phase the coffee plants are sensible to weed interference, when many times the using herbicides is necessary. Some products can affect the effectiveness of association on coffee plants. It was set up an experiment evaluating the benefits of substrate inoculation with mycorrhizal fungi, as to quality and nutrition of plants, further on implications of different herbicides and glyphosate on initial growth of coffee plant colonized with arbuscular mycorrhizal fungi. One experiment was set up to present the mycorrhizal benefits on production and quality of coffee seedlings, and two experiments about implication of different herbicides and glyphosate subdoses on young coffee plants. The substrate inoculation with spores of Claroideoglomus etunicatum and Rhizophagus clarus improved the quality of coffee seedlings, which showed better nutritional status and growth. The herbicide flumioxazin showed selectivity to coffee plants, fomesafen and a mixture with fluazifop-p-butil were less selective and metsulfuron-methyl, metribuzin and oxyfluorfen caused several damage on plants colonized with C. etunicatum and Rhizophagus clarus. Glyphosate subdoses damaged coffee plants colonized with Rhizophagus clarus and Gigaspora margarita or indigenous mycorrizal fungi. Thus, flumioxazin can be use as an option to weed control in crop implantation using mycorrized seedlings. The others products should be avoided in crop initial phase, mainly, when intend to use arbuscular mycorrhizal fungi.