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Título: | Efeitos do ataque de Epinotia aporema (WALSINGHAM, 1914) (Lepidoptera: Tortricidae) em diferentes períoos de desenvolvimento da soja. |
Autoria: | FOERSTER, L. A.![]() ![]() IEDE, E. T. ![]() ![]() SANTOS, B. B. ![]() ![]() |
Afiliação: | L . A. FOERSTER, UNIVERSIDADE FEDERAL DO PARANÁ; EDSON TADEU IEDE, CNPF; B. B. SANTOS, UNIVERSIDADE FEDERAL DO PARANÁ. |
Ano de publicação: | 1983 |
Referência: | Anais da Sociedade Entomológica do Brasil, v. 12, n. 1, 1983. |
Conteúdo: | The effects of damage by the budworm Epinotia aporema (Wal singham, 1914) on the development and yield of soybeans were evali:i° ated on late-planted 'UFV-1' soybeans. The following exposure pe riods of l arval attack were establis hed, with the respective proportions of damaged plants at the e nd of each period : ve ge ta tive sta ge (83,57.), flowering (65 , 57.) , reproductive stage (45 , 07.), exposed throughout the cicle (86,77.) , and control (undamaged) . Larval attack during the vegetative stage caused r eductions in plant size and height of the first pod, and an increa se in the number of secondary branches , which compen sated for losses caused by larval attack in the main stem. Desp i te the comparat ively short period of damage during flo wering in relation to the other treatments, yields were lower with budworm damage during flowering , indicating that this is the most critica! stage of soybeans to the attack of the budworm . It is co n cluded that high levels of incidence of E. aporema during the vege ta tive stage and after pod-set do not advers.ely affect s oy bean yiel ds, while 407. - 507. of damaged plants c a.n be tolerated during flower ing without significant reductions in yield. |
Thesagro: | Praga de Planta Epinotia Aporema |
NAL Thesaurus: | Lepidoptera Tortricidae |
Tipo do material: | Artigo de periódico |
Acesso: | openAccess |
Aparece nas coleções: | Artigo em periódico indexado (CNPF)![]() ![]() |
Arquivos associados a este item:
Arquivo | Tamanho | Formato | |
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AnSocEntomolBrasil-1983-Iede-et-al.pdf | 1,13 MB | Adobe PDF | Visualizar/Abrir |