Natural distribution of the entomopathogenic fungus Beauveria in a coffee crop

• Ano de defesa: 2016
• Autor(a) principal: Benavides Martinez, Angela Yomaira
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Palavras-chave em Português: Fungo entomopatogênico; Café - Doenças e pragas - Controle biológico; Entomologia Agrícola
• Link de acesso: https://locus.ufv.br//handle/123456789/26692

Coffee agroforestry crops present a great opportunity and a potential in terms of diversity of components and their natural enemies when they are handled under this system. Entomopathogenic fungi are some of these enemies that belong to the order Hypocreales. Among them the best known and used as biopesticide it has been Beauveria, mainly for control of Hypothenemus hampei. This fungus has recently shown to play other roles in nature as their endophytic habit but little is really known about its ecology and as is their natural occurrence in tropical agroforestry crops. Therefore, it evaluated the natural distribution of populations of Beauveria (CFU) before and after coffee harvest. Between May and September 2015, samples in different compartments (soil, root, fallen fruit and fruit tree) were collected and Beauveria was isolated using selective medium for entomopathogenic. Endophytic and epiphytic occurrence was determined in leaves at different levels on the bush. Beauveria populations had significant differences in samples before and after harvest. This study found that roots and fallen fruits Beauveria populations were abundant. No endophytic occurrence was found in leaves but it found epiphytic occurrence with high frequency in basal leaves. The results of this study show that Beauveria is occupying several compartments with abundance presence in the root zone, fallen fruit and soil.