Crescimento vegetativo e acúmulo de nutrientes em Coffea canephora na Amazônia Ocidental

• Ano de defesa: 2015
• Autor(a) principal: Dubberstein, Danielly
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Espírito Santo; BR; Mestrado em Agricultura Tropical; UFES; Programa de Pós-Graduação em Agricultura Tropical
• Palavras-chave em Português: Café conilon; Análise de crescimento; Fases fenológicas; Manejo nutricional; Acúmulo de nutrientes; Coffea canephora; Adubação; Growth analysis; Phenological phases; Nutritional management; Crescimento; Análise foliar; Reprodução; Agronomia; 63
• Link de acesso: http://repositorio.ufes.br/handle/10/8242

The objective was to evaluate the vegetative growth of branches, the concentration and accumulation of nutrients in fruits and coffee leaves under different managements of fertilizer in South Western Amazon. The experiment was conducted in Rolim de Moura municipality, Rondônia, in crops propagated by cuttings 2.5 years old. The experimental design was randomized blocks in a split plot scheme in time, with three replications. The main plot consisted of two fertilization managements (absence and presence) and the plots of the evaluation time (measurement of branches and fruit collections and leaves). Branch growth differed depending on fertilization management, and in the period from early October to early December branches of plants that were fertilized expressed growth rates higher than branches of plants not fertilized. There were seasonal changes in growth throughout the year, the highest growth rates occur from mid-September to early April, characterized time of rainy season in the region. The mineral fertilization influences the concentration in the fruit on the sheet and accumulation in fruit for nitrogen, phosphorus, potassium, calcium, magnesium, manganese, iron and zinc. The concentration for most of the nutrients in the fruit are larger at the start of training. And proportionately lower from the development of the fruit, except for potassium that behaves differently, keeping high content of fruit in all stages of development. Since the leaves, low concentrations occur at the beginning of fruit formation and then tends to increase. Most of the accumulation of nutrients in fruits occurs in the expansion stages of grain formation and maturation, suggesting a higher nutritional demand during this period.