Agricultura Tropical

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http://repositorio.ufes.br/handle/10/17346
Programa de Pós-Graduação em Agricultura Tropical

Centro: CEUNES
Telefone: (27) 3312 1701
URL do programa: http://agriculturatropical.ufes.br

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Navegando Agricultura Tropical por Assunto "Acúmulo de nutrientes"

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    Crescimento vegetativo e acúmulo de nutrientes em Coffea canephora na Amazônia Ocidental
    (Universidade Federal do Espírito Santo, 2015-02-24) Dubberstein, Danielly; Dias, Jairo Rafael Machado; Partelli, Fábio Luiz; Espíndula, Marcelo Curitiba
    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.