Revista Brasileira de Ciências Agrárias
URI permanente para esta coleçãohttps://thoth.dti.ufv.br/handle/123456789/11110
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Item Influence of flowering and additional fertilization on physical and sensory aspects of arabica coffee(Universidade Federal Rural de Pernambuco, 2019) Rocha, Richardson Sales; Simão, João Batista Pavesi; Peluzio, João Batista Esteves; Ferrari, Jeferson Luiz; Gravina, Geraldo de AmaralIn Caparaó region, Brazil, in areas above 1000 m high, a second flowering (called late or from March) is common to take place, causing changes in the crop management for those intending to produce specialty coffees. The objective of this study was to evaluate physical and sensory aspects of arabica coffee from the Caparaó region, produced in traditional and late plantations in the same fields, using two fertilization regimes, one recommended by specific literature and another with the addition of extra fertilizers (33%), respecting the proportions amid them. The employed factorial analysis allowed identifying the interaction between the two levels of nutrition and the two harvests, for the analyzed attributes. The extra addition of fertilizers provided a reduction in the mean score of the fragrance/aroma and overall sensory attributes in the traditional harvest; and in the late harvest, it alone was responsible for raising the scores of the following sensory attributes: flavor, aftertaste, acidity, balance and total. The added extra amount of fertilizer, unassisted, altered the coffee physical aspects, reducing their defects/imperfections.Item Physiological characteristics and development of coffee plants under different shading levels(Universidade Federal Rural de Pernambuco, 2012-01) Baliza, Danielle P.; Cunha, Rodrigo L.; Guimarães, Rubens J.; Barbosa, João P. R. A. D.; Ávila, Fabrício W.; Passos, Alexandre M. A.Differences in the availability of solar radiation can cause modifications in the structure and function of coffee plant leaves, such as physiological, growth and disease incidence alterations. The objective of this work was to evaluate the physiological characteristics and development of developing coffee plants submitted to five shading levels (0, 35, 50, 65 and 90% of shading) in the dry and rainy period. The evaluations were conducted in coffee plants of the Coffea arabica L. species, cultivar Catucaí Amarelo 2SL. The treatments were disposed in a randomized block design with plots subdivided in time, in which the shading levels and the evaluation periods were disposed in the plots and split-plots, respectively. The different shading levels and the seasonal modifications (rainy and dry period) to which the coffee plants were submitted promoted effects on the physiological characteristics, presenting better photosynthetic performance under 35, 50 and 65% shading levels in the rainy period. However, in the dry period, the plants submitted to the 50% shading level present higher CO 2 assimilation. The 35, 50 and 65% shading levels provide better growth for coffee plants. Coffee plants under full sun present higher cercosporiosis incidence.