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Seedling production of Coffea arabica from different cultivars in a modified hy...
Lima,Amador Eduardo de; Guimarães,Rubens José; Cunha,Samuel Henrique Braga da; Castro,Elisa de Melo; Carvalho,Alex Mendonça deABSTRACT The development of modified hydroponic cultivation has aroused interest and its use has enabled advantages in several crops, but studies for coffee are still scarce. Thus, the objective of this research was to evaluate seedling production of three Coffea arabica cultivars (Mundo Novo IAC-376-4, Catuaí IAC-62 Amarelo and MGS Paraíso 2), in a modified hydroponic system, and to compare it with the nursery...
Adaptability, stability, and genetic divergence of conilon coffee in Alto Suaçu...
Silva,Vânia Aparecida; Machado,Janaine Lopes; Rezende,Juliana Costa de; Oliveira,Alexandrino Lopes de; Figueiredo,Ulisses José deAbstract The objective of this study was to describe the genetic parameters, adaptability, and stability of clones from the Coffea canephora variety ‘Vitória Incaper 8142’, and the genetic divergence between them. Following 12 and 24 months of plant growth, several traits were evaluated, including stem diameter, plant height, canopy diameter, number of plagiotropic branches, and number of nodes per plagiotropic...
Quantitative analysis of growth in coffee plants cultivated with a water-retain...
Souza,Antonio Jackson de Jesus; Guimarães,Rubens José; Colombo,Alberto; Sant’Ana,José Antonio do Vale; Castanheira,Dalyse ToledoABSTRACT This study aimed to evaluate the use of hydro polymer retainer in the quantitative growth of coffee plants at different levels of irrigation and soil types. The experiment was conducted in pots with seedlings bag in the greenhouse of the Setor de Cafeicultura, Universidade Federal de Lavras. The experimental design was in randomized blocks in factorial (2x4x2): absence or presence of hydro polymer reta...
Water-retaining polymer and seedling type when planting irrigated coffee
Souza,Antonio Jackson Jesus; Guimarães,Rubens José; Dominghetti,Anderson William; Scalco,Myriane Stella; Rezende,Tiago TeruelABSTRACT The aim of this work was to evaluate the use of a water-retaining polymer on the initial growth of coffee plants for different levels of irrigation and types of seedling. The experiment was set up in pots with a clayey soil, in a greenhouse of the Sector for Coffee Production of the Federal University of Lavras, Brazil. The experiment was arranged in a randomised block design into sub-lots with three r...
Nitrogen loss by volatilization of nitrogen fertilizers applied to coffee orchard
Dominghetti,Anderson William; Guelfi,Douglas Ramos; Guimarães,Rubens José; Caputo,André Luiz Carvalho; Spehar,Carlos Roberto; Faquin,ValdemarABSTRACT Ammonia volatilization (N-NH3) is one of the main pathways of Nitrogen loss reducing nitrogen use efficiency in coffee orchard. This work aimed at quantifying ammonia volatilization (N-NH3) losses from N-sources to be used in coffee plantations fertilization in Brazil. The experiment was conducted in the field on a dystrophic red latosol (Ferralsol in FAO's classification) at the Coffee Research Sector...
Critical ranges for leaf nitrogen and potassium levels in coffee fertigated at ...
Assis,Gleice Aparecida de; Guimarães,Rubens José; Colombo,Alberto; Scalco,Myriane Stella; Dominghetti,Anderson WilliamWith the aim of establishing critical ranges for the leaf nitrogen (N) and potassium (K) levels in fertigated coffee crops under production, an experiment was carried out in the experimental area of the Sector for Coffee Cultivation of the Department of Agriculture at the Federal University of Lavras, in Brazil. Treatments consisted of five levels of fertilizer applied through fertigation: 30%, 80%, 130%, 180% ...
Teores foliares de fósforo e zinco, produtividade e crescimento de café irrigado
Scalco,Myriane Stella; Alvarenga,Livia Alves; Guimarães,Rubens José; Dominghetti,Anderson Willian; Colombo,Alberto; Assis,Gleice AparecidaO objetivo deste trabalho foi avaliar os efeitos da irrigação sobre as concentrações foliares de P e Zn e sobre a produtividade e o crescimento do cafeeiro (Coffea arabica), cultivado em plantio tradicional e adensado. Utilizou-se o delineamento experimental de blocos ao acaso, em arranjo de parcelas subdivididas, com quatro repetições. As parcelas corresponderam às densidades de plantio (3.333 e 10.000 plantas...
Leaf miner incidence in coffee plants under different drip irrigation regimes a...
Assis,Gleice Aparecida; Assis,Franscinely Aparecida; Scalco,Myriane Stella; Parolin,Francisco José Toloza; Fidelis,Iraci; Moraes,Jair CamposThe objective of this work was to evaluate the effect of different drip irrigation regimes and planting densities on the incidence of the leaf miner, Leucoptera coffeella, in arabica coffee plants for one year. The experiment was carried out in 2008, in a complete randomized block design, in a split-plot in time arrangement, with four replicates. The treatments consisted of four drip irrigation regimes - soil w...
Adubação nitrogenada e potássica de cafeeiro fertirrigado na fase de formação, ...
Sobreira,Fabrício Moreira; Guimarães,Rubens José; Colombo,Alberto; Scalco,Myriane Stella; Carvalho,Janice GuedesO objetivo deste trabalho foi determinar o parcelamento e a dose de nitrogênio e potássio mais adequados para o primeiro e segundo anos de formação do cafeeiro (Coffea arabica) fertirrigado por gotejamento, no sul de Minas Gerais. Dois experimentos foram instalados simultaneamente com plantio adensado (6.666 plantas ha-1): em um, a adubação foi realizada em quatro aplicações ao ano e, no outro, em 12 aplicações...
Crescimento, produtividade e bienalidade do cafeeiro em função do espaçamento d...
Pereira,Sérgio Parreiras; Bartholo,Gabriel Ferreira; Baliza,Danielle Pereira; Sobreira,Fabricio Moreira; Guimarães,Rubens JoséO objetivo deste trabalho foi avaliar as consequências da redução no espaçamento entre linhas e entre plantas na linha de plantio sobre o crescimento, a produtividade e a bienalidade de produção do cafeeiro (Coffea arabica). Utilizou-se o delineamento experimental de blocos ao acaso, com três repetições, em esquema fatorial 4x3. Foram utilizadas quatro distâncias entre as linhas (2,0, 2,5 3,0 e 3,5 m) e três di...