Distribuição espacial e programa de tomada de decisão de controle usando armadilha para Hypothenemus hampei

• Autor(a) principal: Fernandes, Flávio Lemes
• Data de Publicação: 2009
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/874
• topic: Café; Broca-do-café; Dano econômico; Geoestatística; Manejo integrado de pragas; Coffee; Coffee berry borer; Economic injury; Geostatistics; Integrated pest management; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::ENTOMOLOGIA AGRICOLA

The coffee berry borer, Hypothenemus hampei (Ferrari) (Coleoptera: Scolitydae) is a serious problem for the majority of the world's Coffea arabica L. The traps with atractives are important tools to use in control decision-making systems of pests. For this pest is not exist works about spatial distribution and control decision-making systems with these traps. Thus this work has objectived have decision-making systems to H. hampei with traps. Thus was determined i) the spatial distribution, ii) conventional sampling plan and, iii) the economic injury level of adults H. hampei with attractives traps on Coffea arabica. This study was conduced in C. arabica fields in Ponte Nova and Paula Cândido cities, Minas Gerais State, during the productions 2007/2008 and 2008/2009. To evaluated the densities of insects, was used traps with the atractives methanol, ethanol and benzaldeyde. These traps was making with soda bottle painted of red, capturing adults. Variability in the spatial distribution standard between fields, phenological phases and years was observed. The spherical, exponential and gaussian semivariogram models showed spatial dependence to the number of adults of H. hampei per trap. Was observed that of 31 models choose, 23 (74%) was isotropics and 8 (26%) was anisotropics. Was observed moving of the adults inter- and intra-plants of coffee, that was in direction of declivity area. The number os traps using to decisionmaking by conventional sampling plan was at least one trap per ha. The economic injury level in coffee fields in flower phase, chumbinho fruits phase and in expansion was of 430, 86 and 29 adults/trap, respectively.