This study aimed to evaluate the beverage quality of Coffea canephora genotypes in different environments of the western Amazon to assist plant selection and new cultivar development. To analyze beverage quality, samples of cherry coffee beans were collected separately for each genotype from clonal competition trials installed in the municipalities of Ouro Preto do Oeste, Alta Floresta do Oeste, Porto Velho, an...
Este trabalho foi realizado para determinar, entre seis índices de vegetação baseados em dados de refletância espectral, aquele que melhor discrimina doses de nitrogênio e que possui maior correlação com leituras de clorofila e massa seca do capim-tanzânia (Panicum maximum Jacq.). Os índices testados foram o NDVI (índice de vegetação por diferença normalizada, calculado utilizando a banda do vermelho e a banda ...
Differentiation of coffee according to its quality can result in added value. Both the coffee genotype and the environment influence beverage quality. The main species grown in the Amazon region is C. canephora, which includes two distinct botanical varieties: Conilon and Robusta. The aim of this study was to characterize beverage quality in C. canephora and distinguish the Conilon and Robusta botanical varieti...
Conselho Nacional de Desenvolvimento Científico e Tecnológico; A qualidade do café é resultado da interação entre a cultura, meio ambiente e tratos culturais, criando um elevado número de fatores que, aliados a variabilidade espacial da produção e qualidade, dificultam sua otimização. A agricultura de precisão, com o manejo localizado desses fatores segundo sua variabilidade, pode trazer grandes benefícios à ca...
Although normally measured in classes, fruit ripening cycle is a complex trait with expression governed by several genes influenced by the environment, which results in a quantitative trait of the continuous distribution. This study aimed to characterize the genetic components of Coffea canephora fruits ripening cycle in order to quantify the genotypic and environmental effects in the expression of this trait. ...
Conselho Nacional de Desenvolvimento Científico e Tecnológico; The quality of agricultural products within a plot can vary temporally and spatially due to variation of soil attributes, weather conditions and the way the agricultural operations are conducted. The knowledge about the variability of the quality in the field can help with the decision making process in coffee production systems, since the price of ...