Control of virus spread through vectors on potato fields - doi: 10.4025/actasciagron.v32i4.4823

• Autor(a) principal: Costa, Rejane Rodrigues da
• Data de Publicação: 2010
• Outros Autores: Figueira, Antônia dos Reis, Rabelo Filho, Francisco de Assis Câmara, Almeida, João Eduardo Melo de, Carvalho Filho, José Luiz Sandes de, Oliveira, Cleiton Lourenço
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Acta Scientiarum. Agronomy (Online)
• Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4823
• topic: Myzus persicae; Potato virus Y; Myzus persicae; Potato virus Y; Fitopatologia

The objective the work was to investigate the effect of insecticide treatments on virus spread and in potato yield, as well as to evaluate the residue value of the insecticides employed in the tubers subjected to these treatments. The experiment was carried out with two cultivars in randomized blocks with 40 tubers, 4 replications and 12 treatments, as follows: 1) insecticide spraying (SI) on leaves once a week, with the last application at 55 days after planting (DAP); 2) SI on leaves once a week, with the last application at 69 DAP; 3) SI on leaves once a week, with the last application at 69 DAP + application of Cabrio Top; 4) SI on leaves every five days, with the last application at 69 DAP; 5) SI on leaves once a week, with the last application at 80 DAP; and 6) control, with no insecticides after plant emergence; and all of them combined with 2 soil treatments (Imidacloprid and Phorate). Those results show that the application of insecticides is useless when the potato seed has a high PVY incidence.