Biblioteca do Café
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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.Item Microclima no cafeeiro conilon arborizado com seringueira(Embrapa Café, 2013) Araújo, André Vasconcelos; Oliosi, Gleison; Partelli, Fábio LuizPoucos são os estudos com café (Coffea sp.) arborizado com seringueira (Hevea brasiliensis), contudo, esta prática vem sendo utilizado na região norte do Espírito Santo por alguns agricultores, e tem apresentado potencial de consórcio. Neste estudo objetivou-se avaliar o microclima no cultivo do cafeeiro Conilon (C. canephora) cultivado a pleno sol e sob sombreamento proporcionado pela seringueira. O experimento foi composto por uma lavoura de café Conilon, cultivadas a pleno sol e outra lavoura de café consorciada com seringueira. A cultura da seringueira foi espaçada em 7,8 x 2,3 m e plantada em final de 2007 e o cafeeiro implantado em fileira dupla à 5,4 x 2,6 x 1,3 m (1.972 plantas ha-1) em final de 2006. As culturas foram plantadas no sentido Leste Oeste, em Jaguaré, Espírito Santo, Brasil. Foram medidos a luminosidade e a temperatura em janeiro (verão) e setembro (inverno) de 2012, com auxílio de HOBO U12 Temp/RH/Light/External Data Logger. As medidas foram registradas antes do nascer do sol prolongando-se até o final do dia. O sombreamento influenciou diretamente no microclima, reduzindo, a temperatura do ar no verão e no inverno. A luminosidade no verão teve uma redução media de 905 lum ft-2 ao longo de todo dia, equivalente a 72,49%, e no inverno de 1665 lum ft-2, equivalente a 88,04%. Nas condições estudadas a arborização com seringueira apresentou potencial de consórcio, tornando o ambiente mais ameno para o cultivo do cafeeiro, contudo o excesso de sombreamento pode afetar o desenvolvimento da planta.