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Coffee Science     Open Access   (SJR: 0.398, CiteScore: 1)
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Coffee Science
Journal Prestige (SJR): 0.398
Citation Impact (citeScore): 1
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1809-6875 - ISSN (Online) 1984-3909
Published by Editora UFLA Homepage  [1 journal]
  • The The role of entomopathogenic fungi in controling the coffee berry
           borer (Hypothenemus hampei Ferrari) at various altitudes of Arabica coffee

    • Authors: H Husni, J Jauharlina , Ninda Maulidia
      Abstract: A study was conducted to study the effect of altitude on the presence and effectiveness of entomopathogenic fungi in suppressing the development of the coffee berry borer (Hypethenemus hampei Ferr.) in Arabica coffee plantations in Aceh Tengah District, Aceh Province, Indonesia. We found that only the fungus of the genus Beuveria infects CBB pests in the coffee plantations. We also found that the infection rate of this fungus against CBB pests in coffee fields located at an altitude of 900-1,100 m was higher than in coffee fields located at an altitude above 1,100 m. At first observation showed that the attack rate of entomopathogenic fungi against CBB at an altitude of 900-1,100 m; 1,100-1,300 and 1,300-1,500 m were 6%, 3% and 1%, respectively. In the second observation, the attack rate at an altitude of 900-1,100 m, 1,100-1,300 m and 1,300-1,500 m, were 8%, 2% and 1%, respectively. This indicates that the higher the temperature around the coffee plantation, the higher the infection rate (attack) of the Beuveria fungus on CBB. The correlation analysis also showed that an increase in CBB attack on coffee berries was generally followed by an increase in entomopathogenic fungi attack. This indicates that the Beuveria sp fungus has played a role in suppressing and balancing the development of CBB pests in Arabica coffee plantations in Aceh Tengah District. Key words: Arabica coffee plantation; CBB pest; altitude; Beuveria sp; natural enemies; attack rate.
      PubDate: 2022-11-18
      DOI: 10.25186/.v17i.2002
      Issue No: Vol. 17 (2022)
  • Determination of physical and mechanical properties of the coffee branch:
           An experimental approach

    • Authors: Wellington Washington Andrade de Melo Júnior, Fábio Lúcio Santos, Francisco Scinocca, Pablo Antunes da Rosa, Ricardo Rodrigues Magalhaes
      Abstract: In order to reduce the human efforts during the manual harvesting and increase the operational capacity and quality, the mechanization of the harvesting operation has been significantly increasingly in the last few years in the coffee crops. Therefore, for the design of coffee harvesting machines, the physical and mechanical properties of coffee branch are of utmost importance for harvesting machines project. In this way, using an experimental approach, the present paper analyzes the variability of physical and mechanical properties in the coffee branches. The branches were collected in different positions, along the orthotropic branch: upper, middle and lower parts of the plant. The mass, volume, specific mass and modulus of elasticity of the collected specimens were determined considering their position in the plant and position along the branches. ​​According to the position in the plant, no significant differences were found between the specific mass averages for the upper, middle and lower parts of the plant. The research had obtained an average of 1.24 GPa with a standard deviation of 0.13 GPa for the elasticity modulus. A significant increase in the elasticity modulus could be noted in the branches from the top to the bottom of the plant in the present research. Key words: Mechanized harvest; tensile test; elasticity modulus variation; coffee plant analysis; coffee branch analysis.
      PubDate: 2022-10-25
      DOI: 10.25186/.v17i.2012
      Issue No: Vol. 17 (2022)
  • Evaluation of heavy metals in Roasted Coffee powder in Iran and Turkey

    • Authors: Ramona Massoud, FatemehSadat MirMohammadMakki, Seyed Fathollah MirMohammad Makki, NargesSadat MirMohammadMakki, Armita Massoud
      Abstract: Nowadays coffee is a popular beverage around the world used in many food industries such as chocolate, dairy industry and also confectionery. Therefore, its quality required special attention. On the other hand, heavy metals have been attracted the attention in food products due to their toxicity and health risks in the food chain. Since coffee is a desirable widely used drink in the world for different age groups, this study aims to measure the concentration of heavy metals and some other elements in several brands of coffee powder from Iran and Turkey markets. After sample collection and preparation, heavy metals were measured using ICP-MS according to the AOAC method. The results showed that fortunately lead, cadmium, cobalt, silver, chromium, and mercury were not detected in any coffee samples. Also, it was observed that Nickel was only found in 3 samples, which was less than the standard limits. The pH of all samples was measured and the range was 5.03 to 6.32 in Iranian and Turkish samples. However, there was a lack of evidence in heavy metals amounts in coffee, this study reveals successful practical information in this field in Iranian and Turkish market but also according to the importance of this issue, further comprehensive studies is needed all over the world. Key words: Coffee; lead; cadmium; mercury; ICP-MS.
      PubDate: 2022-10-11
      DOI: 10.25186/.v17i.2013
      Issue No: Vol. 17 (2022)
  • Impact assessment of the Coffee Social Network (Rede Social do Café)

    • Authors: Sérgio Parreiras Pereira , Luiza Maria Capanema Bezerra, Carlos Eduardo Fredo, Celso Luis Rodrigues Vegro, Cibele Maria Garcia de Aguiar Pereira
      Abstract: The aim of the present study was to assess the impacts of the Coffee Social Network (Rede Social do Café - RSC) among different categories of users through proposal of a method based on multidimensional indicators. The RSC shares information about coffee and promotes collaboration and exchange of experiences in the coffee ecosystem. In an online study conducted in 2019 with 366 respondents, we observed an overall measured impact of the RSC of 29.1%, ranging from 25% to 37%, among eight categories of users: Agroindustry, Technical Assistance and Rural Extension (TARE), Commercialization, Communication, Education, Research, Agricultural Production, and Other. The most expressive results were found in the Quality, Evolution in Knowledge, and Adoption of Technologies indicators, at 44.4%, 39.4%, and 38.4%, respectively. Such indicators refer to an established pattern in each one of the categories of users and are aligned with the objectives of the RSC and with its most frequent themes. The results found are relevant for the management of the platform, whether as informative content or in relationship with users. Finally, the model of impact assessment proved to be appropriate for the RSC and can be applied in other social networks linked to agribusiness. Key words: Social network; impact assessment; coffee; agribusiness.
      PubDate: 2022-09-26
      DOI: 10.25186/.v17i.2006
      Issue No: Vol. 17 (2022)
  • Organic coffee growing as a competitive strategy for Mexico in
           international trade

    • Authors: Yadira Zulith Flores-Anaya, Deisy Milena Sorzano-Rodriguez, Rafael Ravina-Ripoll, Esthela Galvan-Vela
      Abstract: Organic coffee growing has positioned itself as a competitive strategic activity in Mexican territory, representing a considerable income alternative for small national producers. However, in recent years despite this context, the country has lost positions, an issue analysed from the use of the method of analysis of Constant Market Share, which symbolises a statistical technique that helps to break down the growth of exports, and thus to study their behaviour, which finally allowed to estimate the index to measure the comparative advantages revealed for agricultural products. The results suggest at a general level that there is an increase in the world demand for organic coffee, which has benefited certain countries, together with the concentration of Mexican coffee exports in the markets that have grown most rapidly. Key words: Organic coffee farming; competitiveness, Mexico.
      PubDate: 2022-09-26
      DOI: 10.25186/.v17i.2005
      Issue No: Vol. 17 (2022)
  • Precision coffee growing: A review

    • Authors: Lucas Santos Santana, Gabriel Araújo e Silva Ferraz, Sthéfany Airane dos Santos, Jessica Ellen Lima Dias
      Abstract: Precision Agriculture (PA) technologies introduction in coffee-growing is becoming essential to advances in sustainable cultivation and increase in output. Applications that involve PA techniques in coffee production are defined now as Precision Coffee growing (PC). Systematically explored, studies on the subject contribute to improvements in the area, relating soil variability to its impacts on plants. The PC's scientific approach offers new forms of management and more security in coffee production. Aimed at reducing pesticides application and nutrients to the soil, contributing to sustainable development in coffee production. Initially, the research on coffee production had dealt with soil spatial variability, highlighting the geostatistical methods and specific ways to sample the soil. With technological advances in agriculture, new ways of monitoring spatial variability are available. In this context, studies are arising on spatial variability related to the plant, applying terrestrial, aerial and orbital sensors, possibly creating perspectives for monitoring and mapping coffee production. Artificial intelligence, Remotely Piloted Aircraft (ARP) products, harvesting yield sensors, automatic grain classifiers, and remote sensing stand out as new technologies under development in coffee production. These applications in PC involving multidisciplinary research demonstrate new relevant ways of improving crop managing and sustainability guaranteeing. Key words: Digital agriculture; spatial variability; sustainability of cultivation; remote sensing; Sensors.
      PubDate: 2022-09-21
      DOI: 10.25186/.v17i.2007
      Issue No: Vol. 17 (2022)
  • Effect of flight operative height and genotypes on conilon coffee spraying
           using an unmanned aerial vehicle

    • Authors: Edney Leandro da Vitória, Ronaldo Furtado de Oliveira, Deborah Hoffmam Crause, Luis Felipe Oliveira Ribeiro
      Abstract: This study analyzed the effect of operational flight height and conilon coffee genotypes in the deposition and uniformity of destruction in the plant’s canopy. The experiment was carried out with a randomized block design and treatments arranged in a factorial scheme, with three operational flight heights in relation to the coffee canopy and three genotypes of conilon coffee (Coffea canephora). The parameters evaluated were volume median diameter (VMD), density of drops and coverage (%). The interaction between flight height variables and canopy’s range was significant for the data on VMD variables, droplet density and coverage. According to the results, spray performance at an average height of 3.0 m is better than at 2.0 and 4.0 m. At 4.0 m, we observed a decrease in these variables, and this can be explained by a possible drift caused by the wind intensity and direction at higher heights. The coverage on the genotype A1 leaves was higher when compared to the other genotypes, although the height was significantly different only in this genotype, 8.1% at 4.0 m, we observed at this height the lowest coverage values. Key words: Remotely piloted aircraft; spray system; droplet uniformity; Water-sensitive paper; Coffea canephora.
      PubDate: 2022-09-13
      DOI: 10.25186/.v17i.2003
      Issue No: Vol. 17 (2022)
  • Selection of Conilon coffee clones for the Zona da Mata region of Minas
           Gerais, Brazil

    • Authors: Waldenia de Melo Moura, Adriene Woods Pedrosa, Rebeca Lourenço de Oliveira, Paulo Roberto Cecon, Romário Gava Ferrão, Maria Amélia Gava Ferrão, Abraão Carlos Verdin Filho
      Abstract: Recently, the cultivation of Coffea canephora species has expanded as a consequence of climate change effects and emerging markets that use this coffee as raw material. To meet such demands of production, it is necessary to also improve yield in cultivated areas. Hence, this study aimed to evaluate Conilon coffee clones to identify the most promising fitting material for the Zona da Mata region of Minas Gerais, as well as to analyze the effect of the genotype x biennium interaction and estimate correlation coefficients among evaluated characteristics. Vegetative vigor, yield, main pests and diseases were evaluated in 36 clones from Incaper, ES. The statistical analyzes considered the averages of each biennium (2005/2006 and 2006/2007; 2007/2008 and 2008/2009) and also the average of three biennia concomitantly. Univariate and joint statistical analyzes were performed, as well as estimates of phenotypic, genotypic and environmental correlation coefficients among assessed characteristics. A wide variability among clones was observed for most of the evaluated characteristics for both each biennium and the average of three biennia. The severities of most diseases have reduced over the years of cultivation. The genotypic correlation coefficients have overcome phenotypic and environmental ones. In general, pests and diseases severities showed significant and negative correlations with vegetative vigor and yield. On the other hand, the last two characteristics were positively correlated. It was also evidenced a certain diversity among clones for most of the evaluated traits. Clone x biennium interaction was significant only for yield and leaf rust severity. There are negative correlations among the characteristics associated with yield and pests and diseases occurrences, which make it possible the use of yield variable as a selection parameter. Clones 24, 23, 28, 26, 21, 29 and 06 MG/ES present a higher potential for cultivation in the Zona da Mata of Minas Gerais. Key words: Breeding; coffea canephora; correlations; genotype-environment interaction.
      PubDate: 2022-08-29
      DOI: 10.25186/.v17i.1995
      Issue No: Vol. 17 (2022)
  • Genetic variability of conilon coffee population from cultivar
           ‘ES8152’ based on morphoagronomic variables

    • Authors: João Felipe Brites Senra, Josimar Aleixo da Silva, Maria Amélia Gava Ferrão, Marlon Dutra Degli Esposti, Idalina Sturião Milheiros, Kamila Machado Fassarella
      Abstract: This study aimed to analyze the genetic variability of Coffea canephora population with 190 genotypes from cultivar ‘ES8152’, based on morphoagronomic characteristics and vegetation index, to identify the most important characteristics for genetic divergence and compare them with commercial clones. The experiment was installed, in 2019, at the Bananal do Norte Experimental Farm/INCAPER, Cachoeiro de Itapemirim, ES, Brazil. The experiment was carried out in Federer’s augmented block design with three blocks, four common treatments (commercial clones A1, LB1, V8 and V12) and 190 regular treatments, genotypes from the seed production field of the conilon coffee cultivar ‘ES8152’. At 24 months of age 14 morphoagronomic characteristics and vegetation index were evaluated. Descriptive analysis of the data, the estimation of the Standardized Euclidean Distance (ED) followed by the grouping by the methods of Tocher, UPGMA and principal coordinates, in addition to the relative importance of the characters estimated by the Singh methodology were performed. The most distant genotypes were 62 and 83 (ED=2.620) and the closest were 42 and 160 (ED=0.208). Genotype 83 stood out as the most distant among the others. The optimization and hierarchical groupings allowed the identification of genotypes 15, 81, 107 and 184 as similar to commercial clones. The discard analysis of variables recommended the elimination of the vegetation index and average internode length of the next diversity analysis. Principal coordinate analysis found phenotypic similarity of the genotypes 30, 81, 115, 141 and 163 with the clone V12, of the genotype 119 with the clone A1 and genotype 17 with clone LB1. The study, of morphoagronomic characters, allowed to detection the genetic diversity existing in the materials evaluated, indicating those with phenotypic similarity with the commercial clones, being possible the early identification of promising
      genotypes, agronomically superior, to start a breeding program for clonal selection, recurrent selection and controlled crosses to maximize heterosis. Key words: Coffea canephora; pre-breeding; genetic diversity; clusters.

      PubDate: 2022-08-24
      DOI: 10.25186/.v17i.1986
      Issue No: Vol. 17 (2022)
  • Detection of adulterated coffee by fourier-transform infrared (FTIR)
           spectroscopy associated with sensory analysis

    • Authors: Yeison Fernando Barrios-Rodriguez, Yenny Devia-Rodriguez, Nelson Gutierrez Guzmán
      Abstract: Because of its huge economic value, coffee has been the target of adulteration worldwide. Given the successful application of spectroscopic methods in detecting adulterants, this study aimed to employ attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) to detect adulterants in roasted coffee samples and compare the results with that of sensory analysis. In this study, twelve coffee samples were intentionally adulterated with varying concentrations, i.e., 10%, 30%, and 50%, of corn, beans, sawdust, and coffee husk. These adulterated samples were compared with one unadulterated coffee sample and four roasted and ground commercially available coffee samples; spectral readings of caffeine and chlorogenic acid (CGA) standards were performed for reference. The sensory analysis was performed by 17 tasters who were trained by a Q-grader. The infrared (IR) spectra
      (FTIR) data were processed by multiplicative signal correction (MSC) and subjected to a principal component analysis (PCA), along with the results of the sensory analysis. The combination of sensory analysis and IR spectrum allowed to differentiate samples of adulterated coffee and unadulterated coffee by PCA, with an explanation of 79% variance. The results demonstrated that the wavenumbers associated with CGA and caffeine contribute significantly in distinguishing adulterated coffee samples.
      Key words: Adulterants; coffee quality; chemometric; sensory analysis.
      PubDate: 2022-08-23
      DOI: 10.25186/.v17i.1970
      Issue No: Vol. 17 (2022)
  • Identifying Coffea genotypes tolerant to water deficit

    • Authors: Diana María Molina, Ruben Medina Rivera
      Abstract: Approximately 26% of the coffee grown in Colombia is located in areas presenting water deficit, with some of these areas also presenting high solar brightness. This combination reduces coffee production, thus affecting the income of 31% of the country’s coffee-growing families. To identify accessions of the Colombian Coffee Collection (CCC) that are tolerant to water deficit, 65 genotypes were evaluated in screenhouse conditions using two soil moisture treatments: (1) soil at field capacity (60% moisture) and (2) water deficit conditions, with soil at 50% field capacity (30% moisture). After five months, total biomass was determined as the sum of the biomass of leaves, stems, and roots, and values analyzed according to the Student's t test for independent samples at a level of significance of 5%. Reducing irrigation under water deficit conditions usually delays accession growth, which is reflected in decreased biomass. However, the total biomass of nine Ethiopian introductions of Coffea arabica (CCC238, CCC254, CCC284, CCC372, CCC474, CCC536, CCC537, CCC555, CCC1147), six diploid accessions (CCC1030, EA.20, EA.209, EA.227, EA.229, EA.287), and three interspecific hybrids of Caturra x Coffea canephora (25, 640, 702) in water deficit conditions did not differ statistically from the total biomass obtained in treatments with irrigation at field capacity. Because these introductions present adaptation mechanisms to water deficit, they retain their leaves without reducing their leaf area or total biomass and should accordingly be considered as candidates for evaluation in dry regions to determine their tolerance to water deficit based on effects on production or biomass. Key words: Coffea arabica; Coffea canephora; interspecific hybrids; total dry biomass; water stress.
      PubDate: 2022-07-12
      DOI: 10.25186/.v17i.1994
      Issue No: Vol. 17 (2022)
  • Factor analysis for plant and production variables in Coffea canephora in
           the Western Amazon

    • Authors: Gabi Nunes Silva, Laís Mayara Azevedo Barroso, Cosme Damião Cruz, Rodrigo Barros Rocha, Fábio Medeiros Ferreira
      Abstract: The evaluation of morphological characters related to the hulled coffee yield subsidizes the selection of Coffea canephora plants that combine a set of favorable traits. However, the greater the number of traits considered, the more difficult the selection process becomes. In this context, multivariate analyzes can be useful to overcome this problem. The aim of this study was to identify, in a set of agronomic traits of Coffea canephora, the determining factors of biological phenomena and use these factors to recognize patterns of diversity and similarity from biological complexes of interest to the breeder. To this, eleven morphological descriptors were evaluated of 130 clones of the botanical varieties Conilon and Robusta and intervarietal hybrids over two crop years in the experimental field of Embrapa, in the municipality of Ouro Preto do Oeste, state of Rondônia (RO). To group the traits, the multivariate technique of Factor Analysis was used. The effect of genotype x year interaction was significant for the eleven traits analyzed. Based on the scree plot, three factors were established. Factors were interpreted as architecture, vigor and grains with a satisfactory percentage of explained variability. The interpretation of the factors highlighted the importance of the Conilon variety to improve the architecture of the Robusta botanical variety. These results show that it is possible to use factor scores to identify varieties and traits that favor higher production of hulled coffee. Key words: Coffee; Conilon; Robusta; Intervarietal hybrids; Multivariate analyzes.
      PubDate: 2022-07-12
      DOI: 10.25186/.v17i.1985
      Issue No: Vol. 17 (2022)
  • Initial performance of coffee trees with different fertilization and
           irrigation management

    • Authors: Jose Geraldo da Silva Júnior, Iago Parmanhani Pin, Daniel Soares Ferreira, Dalyse Toledo Castanheira
      Abstract: Coffee is one of the main agricultural commodities in the world. However, due to its sensitivity to water stress and changes in the availability of finite sources of nutrients and the constant search for a more sustainable agriculture, it is necessary to modulate the responses of plants to soil water and the real nutritional demand of the coffee tree. Thus, the objective of this work was to analyze the initial performance of arabica coffee grown with or without water restriction and with five different soil fertilization managements, in order to propose more techniques to optimize coffee production. The experiment was carried out in a greenhouse, in the experimental area of the Federal University of Viçosa, in the city of Viçosa-MG. The experimental design was completely randomized in a 2x5 factorial scheme, with two irrigation depths (40% and 80% of the available water in the soil) and five fertilization managements (conventional 100% of the recommended dose, controlled release of 80 and 100% of N and recommended K and organomineral 80 and
      100% N and K of the recommended dose). In view of the observed results, it can be observed that water restriction in the initial period of coffee development provided a reduction in the variables of root and shoot growth of the plants, regardless of the soil fertilization management used. In environments with greater water restriction, no significant difference was observed between the studied fertilizers and in an environment without water restriction, the controlled release fertilizer 80% presented the highest global growth averages. Water management provided a greater effect on coffee nutrient dynamics than duly studied fertilization management. Key words: Coffea arabica L.; Coffee nutrition, sustainability, water deficit.
      PubDate: 2022-06-09
      DOI: 10.25186/.v17i.1981
      Issue No: Vol. 17 (2022)
  • Diagnosis about the perspectives of precision applications of coffee
           growing technologies in municipalities of Bahia, Brazil

    • Authors: Rozymario Bittencourt Fagundes, Édson Luis Bolfe
      Pages: 172034 - 172034
      Abstract: Brazil is the largest coffee producer in the world and precision agriculture (PA) generates information for decision-making by farmers in crop management. However, one of the challenges is to better understand farmers' view of PA applications, challenges and benefits. This article presentes the applicability perspectives of Precision Agriculture techniques in Bahia state coffee farming, for greater efficiency and economic and environmental sustainability. To achieve the objective of this article, a virtual questionnaire was sent, sent to coffee growers in Bahia state. The questionnaire was sent by email in 2021 and the WhatsApp application, reaching 457 producers, 34 of whom, from all productive regions of Bahia, responded. The rate of return was 7.4%, within the expected by the application of the use. It was found that 59.3% of respondents have a high prospect of using PA in coffee growing, 26.6% have a medium perspective and 11.1%, a low perspective. The research shows that 67.6% do not use PA in the fields and that 51.7% consider the lack of training as a major obstacle to the use of PA and other digital technologies. Thus, the conclusion is reached that there is a promising scenario in Bahia state for the application of PA in coffee growing, as long as there is training for the development of techniques in farming. Key words: Precision agriculture; survey; agribusiness; rural development.
      PubDate: 2022-10-25
      DOI: 10.25186/.v17i.2034
      Issue No: Vol. 17 (2022)
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