EFEITO DE FUNGOS MICORRÍZICOS E NEMATÓFAGOS NO BIOCONTROLE DE NEMATÓIDES E NA NUTRIÇÃO FOSFATADA DO CAFEEIRO
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2011
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O objetivo neste trabalho foi avaliar o efeito dos fungos micorrízicos e nematófagos no biocontrole de nematoides (Meloidogyne paranaensis) e na nutrição fosfatada do cafeeiro. O experimento foi conduzido em casa de vegetação no Instituto Agronômico do Paraná-IAPAR, Londrina-PR em delineamento experimental inteiramente casualisado. Os tratamentos foram: controle sem e com nematoide, inoculação de fungos micorrízicos arbusculares (FMA) e fungos nematófagos (FN) isolados e em mistura, totalizando 10 tratamentos. Mudas de café cv. ‘IPR 100’, ‘IAPAR 59’, ‘CATUAÍ’ e ‘MUNDO NOVO’ foram inoculadas com aproximadamente 150 esporos de FMA das espécies Gigaspora margarita ou Glomus clarum. Noventa dias após o transplante das mudas foi feita a inoculação com ovos e juvenis de segundo estádio de M. paranaensis e cento e vinte dias após foi realizada a aplicação dos FN. Após 300 dias do transplante foram realizadas as seguintes avaliações: fator de reprodução de nematoide em 10 repetições, fósforo acumulado na parte aérea e colonização radicular em 5 repetições. Houve efeito da inoculação dos fungos micorrízicos e nematófagos no teor de fósforo acumulado na parte aérea das plantas e na colonização radicular. Os fungos micorrízicos e nematófagos reduziram a reprodução de M. paranaensis no cafeeiro apresentando assim potencial para serem utilizados como agentes de controle biológico.
The objective of this work was to evaluate the effect of the arbuscular mycorrhizal fungi and nematophagus fungi on the nematode biocontrol (Meloidogyne paranaensis) and the coffee phosphate nutrition. The experiment was conducted in greenhouse condition at Agronomic Institute of the Paraná-IAPAR, Londrina-PR on completely randomized. The treatments were: control with and without nematode, inoculation of arbuscular mycorrhizal fungi (AMF) and nematophagus fungi (NF), with ten treatments. Seedlings of coffee cultivar of 'IPR100', 'IAPAR 59', 'CATUAÍ' and 'MUNDO NOVO' was inoculated with approximately 150 spores of mycorrhizal species (Gigaspora margarita or Glomus clarum). The inoculation of M. paranaensis (eggs and juvenile of second stage) was made 90 days after the transplant of the seedlings, while the nematode fungi were inoculated 120 days after the transplation of the seedlings. After 300 days it was evaluated the nematode reproduction factor with 10 repetitions, phosphorus accumulated in the shoot and root mycorrhizal colonization with 5 repetitions. There were effects of the AMF and NF on the phosphorus accumulated in the shoot and in root mycorrhizal colonization. The arbuscular mycorrhizal fungi and the nematophagus fungi reduced the reproduction of M. paranaensis in the coffee plants which evidence their potential for be used as biological control agents.
The objective of this work was to evaluate the effect of the arbuscular mycorrhizal fungi and nematophagus fungi on the nematode biocontrol (Meloidogyne paranaensis) and the coffee phosphate nutrition. The experiment was conducted in greenhouse condition at Agronomic Institute of the Paraná-IAPAR, Londrina-PR on completely randomized. The treatments were: control with and without nematode, inoculation of arbuscular mycorrhizal fungi (AMF) and nematophagus fungi (NF), with ten treatments. Seedlings of coffee cultivar of 'IPR100', 'IAPAR 59', 'CATUAÍ' and 'MUNDO NOVO' was inoculated with approximately 150 spores of mycorrhizal species (Gigaspora margarita or Glomus clarum). The inoculation of M. paranaensis (eggs and juvenile of second stage) was made 90 days after the transplant of the seedlings, while the nematode fungi were inoculated 120 days after the transplation of the seedlings. After 300 days it was evaluated the nematode reproduction factor with 10 repetitions, phosphorus accumulated in the shoot and root mycorrhizal colonization with 5 repetitions. There were effects of the AMF and NF on the phosphorus accumulated in the shoot and in root mycorrhizal colonization. The arbuscular mycorrhizal fungi and the nematophagus fungi reduced the reproduction of M. paranaensis in the coffee plants which evidence their potential for be used as biological control agents.
Descrição
Trabalho apresentado no Simpósio de Pesquisa dos Cafés do Brasil (7. : 2011 : Araxá, MG). Anais Brasília, D.F: Embrapa - Café, 2011
Palavras-chave
Micorriza, controle biológico, fósforo, Coffea arabica., Mycorrhizal, biological control, phosphorus, Coffea arabica.
Citação
Scherer, Alexandra; Machineski, Oswaldo; Krzyzanowski, Alaíde Aparecida; Yada, Inês Fumiko Ubukata; Balota, Elcio Libório. Efeito de fungos micorrízicos e nematófogos no biocontrole de nematóides e a na nutrição fosfatada do cafeeiro. In: Simpósio de Pesquisa dos cafés do Brasil (7. : 2011 : Araxá, MG). Anais Brasília, D.F: Embrapa - Café, 2011 (1 CD-ROM), 4p.