Acta Amazonica

URI permanente para esta coleçãohttps://thoth.dti.ufv.br/handle/123456789/13095

Navegar

Filtros

2002 - 200912010 - 201912020 - 20221

Configurações

Data final: 2022Assunto: search.filters.subject.Pragas, doenças e plantas daninhas

Resultados da Pesquisa

Agora exibindo 1 - 3 de 3
  • Imagem de Miniatura
    Item
    First record of Psocodea (Psocoptera) on coffee (Coffea canephora) in the Brazilian Amazon (Rondônia state)
    (Instituto Nacional de Pesquisas da Amazônia, 2022-12-05) Costa, José Nilton Medeiros; Teixeira, César Augusto Domingues; Cutrim, Marcelo; Silva Neto, Alberto Moreira da; Rafael, José Albertino; Souza, Jéssica Gonçalves de
    There is much information regarding the association of Psocoptera and coffee as stored grain pests and little is known about their presence in coffee plants. We conducted a survey in a coffee plantation of Coffea canephora in the municipality of Candeias do Jamari, Rondônia state, Brazil, where we obtained the first record of a coffee plant as a host of Psocoptera in the Brazilian Amazon region, and the first record of a representative of the family Archipsocidae (Archipsocus lenkoi) for the state of Rondônia. The psocid population was concentrated and not evenly distributed over the survey area, which indicates an irregular distribution pattern. We have not detected damage or injury to the coffee plants and therefore we cannot consider these psocids as a pest in the coffee plantation.
  • Imagem de Miniatura
    Item
    Diversity and abundance of green lacewings (Neuroptera: Chrysopidae) in a Conilon coffee plantation in Acre, Brazil
    (Instituto Nacional de Pesquisas da Amazônia, 2019) Martins, Caleb Califre; Santos, Rodrigo Souza; Sutil, Weidson Plauter; Oliveira, José Fernando Araújo de
    Coffea canephora (Conilon coffee) has great economic importance for the state of Acre, in northern Brazil. The use of insecticides in this crop has increased considerably in recent years. In order to find species of green lacewing (Chrysopidae, Neuroptera) with potential for use in biological pest control in coffee plantations, we sampled green lacewings during one year in na experimental plantation of Conilon coffee in Acre, in order to assess the diversity, abundance and seasonal occurrence of Chrysopidae species. Samplings were carried out weekly using an entomological net. Overall, 1079 specimens of seven green lacewing species were collected: Ceraeochrysa cincta, Ceraeochrysa claveri, Ceraeochrysa cubana, Ceraeochrysa everes, Chrysoperla externa, Leucochrysa (Nodita) cruentata and Leucochrysa (Nodita) marquezi. Ceraeochrysa cubana was the dominant and constant species, comprising 97% of the sampled specimens and occurring in 82% of the weekly samples. The abundance and constant presence of C. cubana, which preys upon several agricultural pests and has shown resistance to various insecticides, make this species a potential candidate for future programs of biological control in Conilon coffee plantations in the southwestern Brazilian Amazon region.
  • Imagem de Miniatura
    Item
    Ocorrência de Beauveria bassiana (Bals.) Vuill. em broca-do-café (Hypothenemus hampei, Ferrari) no estado de Rondônia, Brasil
    (Instituto Nacional de Pesquisas da Amazônia, 2002) Costa, José Nilton Medeiros; Silva, Rachel Barbosa da; Ribeiro, Paulina de Araújo; Garcia, Alvanir
    Em trabalho efetuado visando o levantamento de inimigos naturais da broca-do-café (Hypothenemus hampei, Ferrari) no estado de Rondônia, verificou-se a ocorrência do fungo Beauveria bassiana (Bals.) Vuill, conforme identificação da Embrapa Rondônia.