Controle de Meloidogyne paranaensis em cafeeiro mediano pela aplicação de silício

• Ano de defesa: 2015
• Autor(a) principal: Roldi, Miria
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual de Maringá; Brasil; Departamento de Agronomia; Programa de Pós-Graduação em Agronomia; UEM; Maringá, PR; Centro de Ciências Agrárias
• Palavras-chave em Português: Café; Coffea arabica; Nematoide das galhas; Manejo; Controle; Aplicação silício; Brasil.; Handling; Root-knot nematode; Brazil.; Ciências Agrárias; Agronomia
• Link de acesso: http://repositorio.uem.br:8080/jspui/handle/1/1202

Coffee (Coffea sp.) is a culture greatly affected by the presence of phytonematodes, especially the ones from the genre Meloidogyne. In the Paraná State, M. paranaensis is the main nematological problem of coffee plantations. Handling of this nematode is done exclusively by the use of resistant rootstocks, since resistant varieties are scarce. The induced resistance can be an option to handling M. paranaensis on coffee, using the silicon element. In the present work, coffee seedlings Mundo Novo were treated with potassium silicate and potassium chloride before the inoculation of M. paranaensis, in order to control this pathogen using the application of products. It was discovered that, 120 days after the inoculation of 2,000 eggs of M. paranaensis per plant, the application of potassium silicate and potassium chloride was efficient to reduce the nematode population, based on reproduction factor and number of nematodes per gram of roots. However, adverse effect was observed in the development of coffee plants, principally in relation to the aerial parts. Posterior studies are necessary in order to clarify the biochemical and molecular relationships between M. paranaensis and coffee in the presence of silicon. It can be also suggested, based on the present results, that the application of silicon constitutes an important tool in the handling of this nematode on infested coffee culture.