Coffee Science - v.13, n.1, 2018
URI permanente para esta coleçãohttps://thoth.dti.ufv.br/handle/123456789/10542
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Item Development and production of fertigated coffee vicente, trees in the west region of Bahia, Brazil(Editora UFLA, 2018-01) Vicente, Marcelo Rossi; Mantovani, Everardo Chartuni; Fernandes, André Luís Teixeira; Neves, Julio Cesar Lima; Dias, Santos Henrique Brant; Figueredo, Edmilson MarquesThe aim in the present study was to evaluate the effects of different split fertigation and doses on the development and production of drip irrigated coffee in the western region of the state of Bahia, Brazil. The study was performed at the Café do Rio Branco Farm, in Barreiras, BA, Brazil, in adult coffee trees aged approximately 3.5 years from the variety Catuaí IAC 144. A 3 x 3 factorial design was adopted, with three levels of nitrogen and potassium fertilization (900/800, 600/500 and 300/250 kg ha-1 year-1 N and K2O) in three monthly split fertigation (two, four and eight times). Stem and crown growth, productivity, yield and sieve were evaluated. The doses of 600/500 and 900/800 kg ha-1 year-1 N/K2O and the splits in two and eight times provided the highest productivities of coffee. A higher split fertigation was observed on the effect of N and K2O doses in coffee development variables (crown diameter and plant height). There was no effect of split fertigation and doses in the classification by sieves of coffee beans.Item Characterization of coffee cultivars leaf rust-resistant subjected to framework pruning(Editora UFLA, 2018-01) Reis, Estevam Antônio Chagas; Freitas, Tainah; Carvalho, Milene Alves de Figueiredo; Mendes, Antônio Nazareno Guimarães; Rezende, Tiago Teruel; Carvalho, João Paulo FelicoriThe goal of our work was to evaluate physiological and agronomic traits, as well as the relationship between these traits in coffee cultivars coming from a germplasm supposedly resistant to leaf rust, and their response to framework pruning. The experiment was conducted at the Federal University of Lavras in randomized blocks with three replicates, with spacing of 3.5 x 0.7 m and plots of 12 plants. An amount of 25 coffee cultivars was evaluated, from which 23 were considered resistant and two susceptible to leaf rust. Traits analyzed were the plagiotropic branch length and number of nodes, net photosynthetic rate, transpiration rate, water use efficiency, fluorescence and chlorophyll index, leaf area index, leaf rust incidence and yield. Catucaí Amarelo 20/15 cv 479, Araponga MG1 and Tupi IAC 1669-33 cultivars show highly responsive to framework pruning. These cultivars have high yield associated to high net photosynthetic rate, water use efficiency and low transpiration rate. Moreover, the last two cultivars show a low incidence of leaf rust. The Acauã cultivar has a good response to framework pruning, showing high yield associated to lower incidence of leaf rust. Catucaí Vermelho 785/15 cultivar is not responsive to framework pruning because show lower yield, high incidence of leaf rust, low vegetative growth and low water use efficiency.