Subjects -> AGRICULTURE (Total: 981 journals)
    - AGRICULTURAL ECONOMICS (93 journals)
    - AGRICULTURE (680 journals)
    - CROP PRODUCTION AND SOIL (120 journals)
    - DAIRYING AND DAIRY PRODUCTS (30 journals)
    - POULTRY AND LIVESTOCK (58 journals)

AGRICULTURE (680 journals)            First | 1 2 3 4     

Showing 201 - 263 of 263 Journals sorted by number of followers
Biodiversity     Hybrid Journal   (Followers: 27)
Agriculture & Food Security     Open Access   (Followers: 21)
Future of Food : Journal on Food, Agriculture and Society     Open Access   (Followers: 20)
African Journal of Food, Agriculture, Nutrition and Development     Open Access   (Followers: 18)
Nature Plants     Full-text available via subscription   (Followers: 17)
Advances in Agriculture     Open Access   (Followers: 15)
Agricultural History Review     Full-text available via subscription   (Followers: 15)
Indian Journal of Agricultural Sciences     Open Access   (Followers: 12)
Biological Agriculture & Horticulture : An International Journal for Sustainable Production Systems     Partially Free   (Followers: 11)
Journal of Land and Rural Studies     Hybrid Journal   (Followers: 11)
Advances in Life Science and Technology     Open Access   (Followers: 11)
Agriculture and Food Sciences Research     Open Access   (Followers: 10)
Agricultural Research     Hybrid Journal   (Followers: 10)
Indian Horticulture     Full-text available via subscription   (Followers: 9)
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 8)
Arboricultural Journal : The International Journal of Urban Forestry     Hybrid Journal   (Followers: 7)
Aceh International Journal of Science and Technology     Open Access   (Followers: 7)
Invertebrate Reproduction & Development     Hybrid Journal   (Followers: 6)
Journal of Agriculture and Sustainability     Open Access   (Followers: 6)
Journal of Agriculture and Social Research (JASR)     Open Access   (Followers: 6)
New Journal of Botany     Hybrid Journal   (Followers: 6)
Journal of Agriculture, Forestry and the Social Sciences     Full-text available via subscription   (Followers: 6)
International Journal of Agriculture and Forestry     Open Access   (Followers: 6)
Acta Scientiarum. Animal Sciences     Open Access   (Followers: 5)
Journal of Advances in Agriculture     Open Access   (Followers: 5)
American Journal of Rural Development     Open Access   (Followers: 5)
EvoDevo     Open Access   (Followers: 5)
Cereal Chemistry     Full-text available via subscription   (Followers: 4)
Acta Agrobotanica     Open Access   (Followers: 4)
Italian Journal of Agronomy     Open Access   (Followers: 4)
Journal of Agricultural Science     Open Access   (Followers: 4)
EU Agrarian Law     Open Access   (Followers: 4)
Studies in Australian Garden History     Full-text available via subscription   (Followers: 4)
Journal of Agriculture and Rural Development in the Tropics and Subtropics     Open Access   (Followers: 4)
Tanzania Journal of Agricultural Sciences     Open Access   (Followers: 4)
Journal of Modern Agriculture     Open Access   (Followers: 4)
Journal of Agriculture and Natural Resources Sciences     Open Access   (Followers: 3)
Journal of the Ghana Science Association     Full-text available via subscription   (Followers: 3)
Journal of Science and Technology (Ghana)     Open Access   (Followers: 3)
Journal of Agricultural Extension and Rural Development     Open Access   (Followers: 3)
Biocatalysis and Agricultural Biotechnology     Hybrid Journal   (Followers: 3)
Sustainable Agriculture Research     Open Access   (Followers: 3)
Food and Energy Security     Open Access   (Followers: 3)
International Journal of Agricultural Research, Innovation and Technology     Open Access   (Followers: 3)
International Journal of Applied Agriculture and Apiculture Research     Open Access   (Followers: 3)
Agra Europe     Full-text available via subscription   (Followers: 3)
Journal of Agricultural Chemistry and Environment     Open Access   (Followers: 3)
Asian Journal of Medical and Biological Research     Open Access   (Followers: 3)
Acta Universitatis Sapientiae, Alimentaria     Open Access   (Followers: 3)
Journal of Essential Oil Research     Hybrid Journal   (Followers: 3)
Diatom Research     Hybrid Journal   (Followers: 3)
Journal of Agricultural Extension     Open Access   (Followers: 2)
Nigerian Food Journal     Full-text available via subscription   (Followers: 2)
International Journal for Parasitology : Parasites and Wildlife     Open Access   (Followers: 2)
Agricultura Tropica et Subtropica     Open Access   (Followers: 2)
Journal of Apicultural Science     Open Access   (Followers: 2)
International Journal of Agricultural Management and Development     Open Access   (Followers: 2)
Ciencia forestal en México     Open Access   (Followers: 2)
Revista Cubana de Ciencia Agrícola     Open Access   (Followers: 2)
Journal of Agriculture and Food Sciences     Full-text available via subscription   (Followers: 2)
Tropical Agricultural Research and Extension     Open Access   (Followers: 2)
Rural China     Hybrid Journal   (Followers: 2)
Rural Sustainability Research     Open Access   (Followers: 2)
Journal of Biology, Agriculture and Healthcare     Open Access   (Followers: 2)
Agro-Science     Full-text available via subscription   (Followers: 2)
Ghana Journal of Agricultural Science     Full-text available via subscription   (Followers: 2)
New Zealand Journal of Agricultural Research     Hybrid Journal   (Followers: 2)
Tropical Agricultural Research     Open Access   (Followers: 2)
Journal of Sustainable Society     Open Access   (Followers: 2)
Journal of Food Security     Open Access   (Followers: 2)
Journal of Agricultural Engineering     Open Access   (Followers: 2)
Revista Verde de Agroecologia e Desenvolvimento Sustentável     Open Access   (Followers: 2)
Huria : Journal of the Open University of Tanzania     Full-text available via subscription   (Followers: 2)
Buletin Peternakan : Bulletin of Animal Science     Open Access   (Followers: 1)
Berkala Ilmiah Pertanian     Open Access   (Followers: 1)
Journal of Agricultural Studies     Open Access   (Followers: 1)
RIA. Revista de Investigaciones Agropecuarias     Open Access   (Followers: 1)
Agricultural Commodities     Full-text available via subscription   (Followers: 1)
Journal of Agricultural Engineering     Full-text available via subscription   (Followers: 1)
Jurnal Veteriner     Open Access   (Followers: 1)
Archivos de Zootecnia     Open Access   (Followers: 1)
Journal of Natural Sciences Research     Open Access   (Followers: 1)
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca : Food Science and Technology     Open Access   (Followers: 1)
Wartazoa. Indonesian Bulletin of Animal and Veterinary Sciences     Open Access   (Followers: 1)
Research in Agriculture, Livestock and Fisheries     Open Access   (Followers: 1)
COCOS : The Journal of the Coconut Research Institute of Sri Lanka     Open Access   (Followers: 1)
Emirates Journal of Food and Agriculture     Open Access   (Followers: 1)
Frontiers in Science     Open Access   (Followers: 1)
Global Approaches to Extension Practice : A Journal of Agricultural Extension     Full-text available via subscription   (Followers: 1)
Chemical and Biological Technologies for Agriculture     Open Access   (Followers: 1)
Progressive Agriculture     Open Access   (Followers: 1)
Folia Horticulturae     Open Access   (Followers: 1)
Rivista di Studi sulla Sostenibilità     Full-text available via subscription   (Followers: 1)
Journal of Science Foundation     Open Access   (Followers: 1)
Annals of Agricultural Sciences     Open Access   (Followers: 1)
Avances en Investigacion Agropecuaria     Open Access   (Followers: 1)
International Journal of Sustainable Agricultural Management and Informatics     Hybrid Journal   (Followers: 1)
Bangladesh Journal of Agricultural Research     Open Access   (Followers: 1)
Journal of Agricultural Sciences     Open Access   (Followers: 1)
Jurnal Ilmu dan Kesehatan Hewan (Veterinary Science and Medicine Journal)     Open Access   (Followers: 1)
Arquivos do Instituto Biológico     Open Access   (Followers: 1)
International Journal of Recycling of Organic Waste in Agriculture     Open Access   (Followers: 1)
International Journal of Agricultural Extension     Open Access   (Followers: 1)
Innovare Journal of Agricultural Science     Open Access   (Followers: 1)
International Journal of Agriculture System     Open Access   (Followers: 1)
Acta Technologica Agriculturae     Open Access   (Followers: 1)
Plant Knowledge Journal     Open Access   (Followers: 1)
Iranian Journal of Applied Animal Science     Open Access   (Followers: 1)
Journal of Degraded and Mining Lands Management     Open Access   (Followers: 1)
Revista Brasileira de Higiene e Sanidade Animal     Open Access   (Followers: 1)
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
Nigerian Journal of Technological Research     Full-text available via subscription   (Followers: 1)
Social and Natural Sciences Journal     Open Access  
Jurnal Agroteknologi     Open Access  
Perspectivas Rurales Nueva Época     Open Access  
Organic Farming     Open Access  
Research Ideas and Outcomes     Open Access  
Jurnal Udayana Mengabdi     Open Access  
Landtechnik : Agricultural Engineering     Open Access  
International Letters of Natural Sciences     Open Access  
Agrociencia Uruguay     Open Access  
Heliyon     Open Access  
Ciência e Técnica Vitivinícola     Open Access  
Oilseeds and fats, Crops and Lipids     Open Access  
Annals of Silvicultural Research     Open Access  
Pastura : Journal Of Tropical Forage Science     Open Access  
Journal of Citrus Pathology     Open Access  
Revista Iberoamericana de las Ciencias Biológicas y Agropecuarias     Open Access  
Kansas Agricultural Experiment Station Research Reports     Open Access  
International Journal of Secondary Metabolite     Open Access  
Scientia Agropecuaria     Open Access  
Pelita Perkebunan (Coffee and Cocoa Research Journal)     Open Access  
Revista de Agricultura Neotropical     Open Access  
Cogent Food & Agriculture     Open Access  
Fave : Sección ciencias agrarias     Open Access  
Revista de Ciências Agrárias     Open Access  
Review of Agrarian Studies     Open Access  
Nigerian Journal of Biotechnology     Open Access  
Nigeria Agricultural Journal     Full-text available via subscription  
Annales des Sciences Agronomiques     Full-text available via subscription  
Journal of the Bangladesh Agricultural University     Open Access  
Journal of Buffalo Science     Hybrid Journal  
Revista de Ciências Agroveterinárias     Open Access  
Tropical Grasslands - Forrajes Tropicales     Open Access  
Research in Plant Sciences     Open Access  
World Journal of Agricultural Research     Open Access  
Universal Journal of Agricultural Research     Open Access  
Research & Reviews : Journal of Agriculture Science and Technology     Full-text available via subscription  
Revue Marocaine des Sciences Agronomiques et Vétérinaires     Open Access  
Nativa     Open Access  
SAARC Journal of Agriculture     Open Access  
West African Journal of Applied Ecology     Open Access  
Journal of Agricultural Research and Development     Full-text available via subscription  
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription  
Global Journal of Agricultural Sciences     Full-text available via subscription  
Agrosearch     Open Access  
Agronomie Africaine     Full-text available via subscription  
Professional Agricultural Workers Journal     Open Access  
Interciencia     Open Access  
Nepal Journal of Science and Technology     Open Access  
Journal of the Saudi Society of Agricultural Sciences     Open Access  
Information Processing in Agriculture     Open Access  
Sabaragamuwa University Journal     Open Access  
Ceiba     Open Access  
Research in Sierra Leone Studies : Weave     Open Access  
The Agriculturists     Open Access  
La Calera     Open Access  
Selçuk Tarım ve Gıda Bilimleri Dergisi     Open Access  
Revista de la Universidad del Zulia     Open Access  
Journal of Arid Land     Hybrid Journal  
Rangifer     Open Access  
Encuentro     Open Access  
Journal Of Agrobiotechnology     Open Access  
Coffee Science     Open Access  
Bangladesh Journal of Scientific Research     Open Access  
Landbohistorisk Tidsskrift     Open Access  
Biotecnología en el Sector Agropecuario y Agroindustrial     Open Access  
Walailak Journal of Science and Technology     Open Access  
Universidad y Ciencia     Open Access  
Tropical and Subtropical Agroecosystems     Open Access  
Terra Latinoamericana     Open Access  
Revista Iberoamericana de Tecnologia Postcosecha     Open Access  
Revista Brasileira de Ciências Agrárias     Open Access  
Multiciencias     Open Access  
Ensaios e Ciência : Ciências Biológicas, Agrárias e da Saúde     Open Access  
Bioagro     Open Access  
Agroalimentaria     Open Access  
Revista Mexicana de Ciencias Agrícolas     Open Access  
Revista U.D.C.A Actualidad & Divulgación Científica     Open Access  
Revista Ciencias Técnicas Agropecuarias     Open Access  
Revista Chapingo. Serie horticultura     Open Access  
Pastos y Forrajes     Open Access  
Fitosanidad     Open Access  
Cultivos Tropicales     Open Access  
Cuadernos de Desarrollo Rural     Open Access  
Ciencia e Investigación Agraria     Open Access  
Agronomía Mesoamericana     Open Access  
Agronomía Costarricense     Open Access  
Agrociencia     Open Access  
Agrivita : Journal of Agricultural Science     Open Access  

  First | 1 2 3 4     

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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]
  • 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)
       
 
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