Biblioteca do Café
URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/1
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Resultados da Pesquisa
Item Microclima e características fisiológicas do cafeeiro conilon, consorciado com seringueira e bananeira(Universidade Federal do Espírito Santo, 2013-02-26) Araújo, André Vasconcellos; Partelli, Fábio LuizExistem poucos estudos de café consorciado com seringueiras e bananeiras, com isso estudos sobre café sombreado são importantes para uma melhor compreensão dos sistemas. Objetivou-se estudar o efeito do consórcio com bananeiras e com seringueira em cafeeiro Conilon, fazendo uma caracterização microclimatológica. O presente trabalho foi realizado em três lavouras; 1) cafeeiro Conilon (Coffea canephora), plantado no final de 2006, consorciado com seringueira (Hevea brasiliensis), plantada no final de 2007, a seringueira esta plantada em fileira dupla (33m X 3m), com 2,3m entre plantas, o café com espaçamento de 3m X 1m. 2) café Conilon, a pleno sol plantado no final de 2006 com espaçamentos de 3,0 X 1,1 e outra lavoura de café consorciada com seringueira com os seguintes espaçamentos 2,6 X 1,3 e 7,8 X 2,3m. 3) café Conilon consorciado com bananeira (Musa sapientum subgrupo Terra) com espaçamentos de 3,5 x 1,2 e 1,5 x 10,5 com 1 ano de idade. As lavouras foram plantadas no sentido leste oeste. Foram medidos a radiação solar, temperatura e umidade relativa do ar em janeiro (verão) e setembro (inverno) de 2012. Realizou-se também avaliação da concentração de nutrientes foliares, medição dos internódios dos ramos plagiotrópicos e ortotrópicos, área foliar e estimação do teor de clorofila a, b e total dos cafeeiros, no verão e no inverno de 2012. O sombreamento influenciou diretamente no microclima, reduzindo a luminosidade, temperatura no verão e no inverno e aumento da umidade relativa. Os ramos e a área foliar sofreram influencia do sombreamento, ocorrendo o maior estiolamento de ramos e área foliar nas lavouras sombreadas. Os macro e micro nutrientes foliares foram influenciados pelo sombreamento, apresentando maiores valores na lavoura sombreada com seringueira para Fe e Mn. Os teores estimados de clorofila b e total foram maiores a pleno sol no verão e no inverno.Item Microclimate, development and productivity of robusta coffee shaded by rubber trees and at full sun(Universidade Federal do Ceará, 2016-10) Araújo, André Vasconcellos; Partelli, Fábio Luiz; Oliosi, Gleison; Pezzopane, José Ricardo MacedoThere are few studies about the shading of Robusta coffee with rubber trees. The aim of this study was evaluate the microclimate, development and yield of Coffea canephora grown at full sun and shaded by rubber trees. The experiment consisted of a Robusta coffee crop (Coffea canephora) grown at under full sun and another coffee crop intercropped with rubber trees (Hevea brasiliensis). The rubber trees and coffee crop were planted in the East/West direction, in Jaguaré, Espírito Santo, Brazil. Was evaluated the luminosity, temperature and relative humidity, leaf nutrient concentrations; internodes of the plagiotropic and orthotropic branches, leaf area; relative chlorophyll index, and tree yield of the coffee crops. The shading directly influenced the microclimate by reducing the air temperature in the summer and winter, as well as by increasing relative humidity. Luminosity in the summer had an average decrease of 905 lumens ft -2 throughout the day, which was equivalent to 72.49%, and luminosity in the winter had an average decrease of 1665 lumens ft -2 , which was equivalent to 88.04%. The shading provided greater etiolation of the plagiotropic and orthotropic branches as well as greater leaf expansion as compared to the full sun. The leaf concentration of Fe and Mn were higher in the shaded coffee. Estimated chlorophyll b and total chlorophyll were greater in the coffee crop grown at under full sun. The dense shading produced by rubber trees provided losses in the coffee crop yield, however, there is the formation of the rubber tree.Item Microclimate and development of 'Conilon' coffee intercropped with rubber trees(Empresa Brasileira de Pesquisa Agropecuária - Embrapa, 2014-11) Partelli, Fábio Luiz; Araújo, André Vasconcellos; Vieira, Henrique Duarte; Dias, Jairo Rafael Machado; Menezes, Luis Fernando Tavares de; Ramalho, José CochichoThe objective of this work was to evaluate the influence of intercropping 'Conilon' coffee (Coffea canephora) with rubber trees on coffee tree microclimate, nutrition, growth, and yield. Rubber trees were planted in two double rows 33 m apart, with 4x2.3 m spacing between plants. Treatments consisted of the distances from the coffee plants to the rubber trees: 3, 6, 9, 12, and 15 m. Measurements of atmospheric variables (temperature, irradiance, and relative humidity), leaf nutrient concentration, internode length of plagiotropic and orthotropic branches, individual leaf area, chlorophyll content, and yield were performed. Intercropping promotes changes in the microclimatic conditions of coffee plants close to rubber trees, with reduction of temperature and irradiance level and increase in air relative humidity. The proximity of the coffee tree to the rubber trees promotes the elongation of the plagiotropic and orthotropic branches and increases the individual leaf area; however, it does not affect leaf concentrations of N, K, Mg, Fe, Zn, and B in 'Conilon' coffee and does not have a negative impact on yield.