Physicochemical Attributes of Tomatoes after Different Forms of Harvesting and Transportation for Industrial Processing Tulio de Almeida Machado, Haroldo Carlos Fernandes, Claudinei Martins Guimarães, Clarice Aparecida Megguer, Woska Pires da Costa, et al. Plos One, 2025 Background The mechanized harvesting and transportation of tomatoes can significantly impact their physicochemical characteristics, affecting quality and industrial processing efficiency. This study aimed to evaluate the effects of harvesting methods and transportation conditions on the firmness, titratable acidity (TA), total soluble solids (TSS – °Brix), pH, and percentage of loss of fresh mass (LFM) of tomatoes intended for industrial use. Methods The mechanized harvesting and transportation of tomatoes can significantly impact their physicochemical characteristics, affecting quality and industrial processing efficiency. This study aimed to evaluate the effects of harvesting methods and transportation conditions on the firmness, TA, TSS (°Brix), pH, and percentage of LFM in tomatoes intended for industrial use. Results Mechanized harvesting reduced tomato firmness, TA, pH, and increased mass loss. Manual harvesting resulted in 29.7% greater firmness than mechanical harvesting. The vibration effects varied depending on the floor and direction within the container, but container type did not significantly influence tomato quality. The position of the fruit in the transport medium affected firmness, with tomatoes at the rear exhibiting greater firmness and lower quality loss. Depth was negatively correlated with firmness, LFM, TA, and pH. The LFM increased with longer unloading times. Conclusion The findings highlight the need for improved handling and logistics strategies in the tomato production chain to reduce quality deterioration during harvesting and transportation. Effective interventions can minimize economic losses and increase industrial processing efficiency. Additionally, the results of this study suggest that laboratory models that use equipment such as shakers can replicate these effects for other bulk-transported crops, including fresh fruits and tubers.
ESTIMATION OF TOMATO FRUIT FIRMNESS USING DIGITAL IMAGING Anderson G. Costa, Layana A. da Silva, João C. L. de Carvalho, Túlio de A. Machado Engenharia Agricola, 2025 omputer vision systems have proven to be a promising alternative for assessing fruit quality attributes in a non-invasive, instantaneous, and accurate manner. This study aimed to use colorimetric characteristics extracted from digital images to estimate tomato fruit firmness through multivariate modeling. Images of 80 tomato fruits at four ripening stages were acquired using two digital cameras, enabling the extraction of average intensity values for the red, green, blue, and near-infrared bands, followed by the calculation of colorimetric indices. Reference firmness values were measured using a digital fruit penetrometer. Colorimetric indices were employed to estimate fruit firmness using principal component regression. Principal component analysis enabled the dimensionality to be reduced to a single principal component (explanatory percentage of the data variance of 97.06%), which was used to generate firmness estimation equations. The application of the model to the validation dataset yielded an R2 = 0.937 and a mean standard error (SE) of 2.05 N, demonstrating that the protocol based on colorimetric characteristics extracted from digital images is suitable for estimating tomato firmness.
Development of a bulk cargo fruit sampler Tulio de Almeida Machado, Haroldo Carlos Fernandes, Fábio Lúcio Santos, Clarice Aparecida Megguer, Nara Silveira Velloso Acta Scientiarum Technology, 2023 The design of an agricultural machine or equipment can be considered of great complexity, due to the interactions between the operator, the machine, the product and the environment. There is a lack of available technologies for collecting fruit in bulk cargo at any time from transport to industries. A limiting factor is the loading of fruits that are at the base of the cargo. This study was carried out to develop a detailed design of a bulk cargo fruit sampler that can collect fruits in any position of the x, y and z axes. A methodology was applied and adapted to execute the design. This methodology was divided into the following stages: design planning, informational design, conceptual design, preliminary design and detailed design. The variant considered the most appropriate was selected for the preliminary design and detailed design. The concepts were divided into chassis or support, sample collector and support for sample removal. The removal of fruits was carried out to maintain as much of their interaction with the environment outside the collector as possible. With the conclusion of the detailed design, it was possible to file, at the National Institute of Industrial Property, the patent for the collector of fruit samples in bulk cargo. Results obtained from fruits in the collector were used in doctoral theses.
Modification of soil physical attributes as a function of subsoiling operations under different managements1 Túlio de A. Machado, Ítalo N. M. Mendes, Emmerson R. de Moraes, Emanoel Di T. dos S. Sousa Revista Brasileira De Engenharia Agricola E Ambiental, 2023 Subsoiler performance can be influenced by crop residue in the soil through different types of vegetation cover. In any of these cover systems, the use of subsoilers for decompaction changes soil physical properties. The present study aimed to evaluate soil physical properties in different management systems using several subsoiling speeds and soil depths. The experiment was conducted at IF Goiano, Morrinhos Campus, Goiás state, Brazil. A completely randomized design was used in a split-plot scheme with 12 treatments and five replicates, totaling 60 plots. The factors corresponded to two management areas (rainfed and pasture), two subsoiling speeds (2.5 and 4.5 km h-1) and three soil depths (0.00-0.015; 0.15-0.30 and 0.30-0.45 m). The main plot consisted of the two management areas and the subplot the combination of the other two factors. Penetration resistance, bulk density, water content, soil mobilization and soil volumetric expansion were evaluated. The results were then submitted to analysis of variance and Tukey’s test (p ≤ 0.05). Penetration resistance and bulk density differed before and after subsoiling. The subsoiling speeds altered penetration resistance and soil mobilization. Pasture areas showed greater root penetration resistance, provided lower water content and favored greater soil volumetric expansion.
Spray tips and adjuvant in the spectrum of spray droplets in pitaya (Hylocereus costaricensis) cultivation Luã Lukas França Sousaa, Edison Masato Santana Miyagawa, Cristiane Fernandes Lisboa, Fernanda Lamede Ferreira de Jesus, Adriano Bicioni Pacheco, et al. Dyna Colombia, 2022 This study aimed to evaluate the spectrum of droplets produced by three spray tips (JSF 11002, SF 11001, and JD12) using two types of spray solutions (with and without adjuvant). The experiment was conducted in randomized blocks in a 3×2 factorial scheme, with four replications. The targets were scanned after spraying and later analyzed by the free software Conta-Gotas. Values were extracted from the number of droplets, number of diameter, dispersion, volume, density, coverage, DV10, DV50, and DV90. Adjuvant addition increased droplet diameter and coverage, thus being indicated to reduce drift losses. The tips JSF 11002 and JD12 showed a larger droplet size, representing higher risk of runoff and low penetration into the plant canopy. The tip SF 11001 presented better penetration and fixation in the plant, thus being the most recommended for the application of phytosanitary products in pitaya.
Quantitative and qualitative loss of tomato fruits during mechanized harvest Túlio de A. Machado, Haroldo C. Fernandes, Clarice A. Megguer, Nerilson T. Santos, Fabio L. Santos Revista Brasileira De Engenharia Agricola E Ambiental, 2018 The use of mechanization in the harvesting of industrial tomatoes provides greater yield and speed of this stage. However, mechanical intervention in this process may alter the physiology of harvested fruits. Therefore, the objective of this study was to measure the quantitative losses of tomato fruits and to verify the physico-chemical behavior of fruits harvested based on physicochemical analysis in harvesters with different hours of use. Three self-propelled harvesters of the same brand and model with different working hours were used. Manually selected or undamaged fruits were harvested; afterwards, mechanized harvesting was carried out. Firmness, titratable acidity, soluble solids content (°Brix), pH, weight loss and fruit status classification proposed by the Ministry of Livestock, Agriculture and Food Supply of 2002 were evaluated. Quantitative losses were divided into: losses on vines, losses on soil and total losses. It was found that the number of hours worked by the harvester did not affect the quantitative losses. The amount of overall damage in a certain amount of fruit is greater when the harvester has a greater number of hours worked. Mechanized harvesting affected the physical attributes of the fruits, such as firmness and percentage of weight loss.
Sweet corn (Zea mays var. Rugosa) seedlings emergence at different depths and fertilization systems Espacios, 2018
Technical and economic analysis of an industrial tomato transplanting system Espacios, 2017
Economic viability for different coffee harvest systems Coffee Science, 2016
METODOLOGIA HUMANATIVA EM AÇÕES DE PESQUISA E EXTENSÃO: UMA REVISÃO TEÓRICA COM FOCO NA EDUCAÇÃO PROFISSIONAL E TECNOLÓGICA (EPT) CA Megguer, DC Marques, JOR Souza, MAB Cunha, TA Machado Instituto Federal Goiano , 2026 2026
Greenhouse gas emissions and energy consumption from different soil management practices in industrial tomato production in Brazil JPB Cunha, JCL Carvalho, TM Machado, T de Almeida Machado, ... Environmental Development, 101347 , 2025 2025 Citations: 1
Energy Efficiency of Industrial Tomato Production in the Southern Region of Goiás, Brazil JPB Cunha, JCL de Carvalho, TM de Souza, T de Almeida Machado, ... Advances in Sciences Behind Food, Energy, and Innovation: Selected … , 2025 2025
OLERICULTURA: UMA HISTÓRIA DOS 10 ANOS DO PRIMEIRO PROGRAMA Stricto Sensu PROFISSIONAL DO INSTITUTO FEDERAL GOIANO TA Machado, RV Silva, CA Megguer Instituto Federal Goiano , 2025 2025
Physicochemical Attributes of Tomatoes after Different Forms of Harvesting and Transportation for Industrial Processing TA Machado, HC Fernandes, CM Guimarães, CA Megguer, WP Costa, ... Plos one 20 (4), e0319668 , 2025 2025 Citations: 2
Metodologia para o monitoramento de integridade estrutural por meio de vibrações mecânicas DSS Brito, FL Santos, PO Lima Junior, TA Machado, PR Borges, ... 2025
ESTIMATION OF TOMATO FRUIT FIRMNESS USING DIGITAL IMAGING AG Costa, LA Silva, JCL de Carvalho, TA Machado Engenharia Agrícola 45, e20250003 , 2025 2025
INFLUENCE OF THE USE OF GRAPHITE ON THE QUALITY OF SWEET CORN SOWING DC da Silva, T de Almeida Machado, D de Paula Oliveira, SCP Toledo, ... 2024
Sistemas agroflorestais como alternativa de produção agrícola sustentável para a Região Amazônica IT Cavalcante, CF Lisboa, FLF de Jesus, T de Almeida Machado, ... Caderno Pedagógico 21 (4), e3807-e3807 , 2024 2024 Citations: 1
Qualidade da pulverização na cultura do quiabeiro utilizando equipamento costal L Silva Instituto Federal Goiano , 2024 2024
INFLUENCE OF THE USE OF GRAPHITE ON THE QUALITY OF SWEET CORN SOWING. D Cristine da Silva, T de Almeida Machado, D de Paula Oliveira, ... Colloquium Agrariae 20 (1) , 2024 2024
Quality of phytosanitary application in Ricinus communis L. cultivation CF Lisboa, T MACHADO, EF dos Reis, LL Costa, CS da Silva Journal of Sustainable Development 17 (6), 127-127 , 2024 2024 Citations: 2
Ciência em quadrinhos EL Oliveira, G Malafaia Instituto Federal Goiano , 2023 2023
Modification of soil physical atributes as a function of subsoiling operations under different managements TA Machado, ÍNM Mendes, ER Moraes, EDTS Sousa Revista Brasileira de Engenharia Agrícola e Ambiental 27 (4), 293-299 , 2023 2023 Citations: 4
Development of a bulk cargo fruit sampler T de Almeida Machado, HC Fernandes, FL Santos, CA Megguer, ... Acta Scientiarum. Technology 45, e61804 , 2023 2023 Citations: 1
Modificação dos atributos físicos do solo em função da operação de subsolagem sob diferentes manejos TA Machado, ÍNM Mendes, ER Moraes, EDTS Sousa Revista Brasileira de Engenharia Agrícola e Ambiental 27, 293-299 , 2023 2023
Spray tips and adjuvant in the spectrum of spray droplets in pitaya (Hylocereus costaricensis) cultivation LL França Sousa, EM Santana Miyagawa, C Fernandes Lisboa, ... Dyna 89 (224), 93-98 , 2022 2022
Drop spectrum in backpack sprayers in scarlet eggplant culture ( Solanum aethiopicum ). LC Coelho, TA Machado, AG Costa, EF dos Reis, CF Lisboa 2022
SEMEADURA DA SOJA EM DIFERENTES SISTEMAS DE PREPARO DE SOLO TA Machado, RBS Vargas, DG Oliveira Instituto Federal Goiano , 2022 2022
Evaluation of spray nozzles used in okra cultivation. WM Lima, MBLO Sena, DP Oliveira, TA Machado 2022
MOST CITED SCHOLAR PUBLICATIONS
Viabilidade técnica e econômica de diferentes sistemas de colheita do café JPB Cunha, FM Silva, REBA Dias, CF Lisboa, TA Machado Editora UFLA , 2016 2016 Citations: 20
Perdas na colheita de tomate industrial em função da regulagem da colhedora JPB Cunha, TA Machado, FL Santos, LM Coelho Pesquisa Agropecuária Tropical 44, 363-369 , 2014 2014 Citations: 18
Análise técnica e econômica de diferentes sistemas de transplantio de café (Coffea arabica L.) JPB Cunha, FM da Silva, F Andrade, T de Almeida Machado, FA Batista Coffee Science-ISSN 1984-3909 10 (3), 289-297 , 2015 2015 Citations: 12
Quality of tomatoes under different transportation conditions by principal component analysis TA Machado, AG Costa, RE Rodrigues, MA Santos, ACL Ribeiro, ... Revista Ceres 67, 448-453 , 2020 2020 Citations: 10
Quantitative and qualitative loss of tomato fruits during mechanized harvest TA Machado, HC Fernandes, CA Megguer, NT Santos, FL Santos Revista Brasileira de Engenharia Agrícola e Ambiental 22 (11), 799-803 , 2018 2018 Citations: 9
Economic viability for different coffee harvest systems. JPB Cunha, FM Silva, REBA Dias, CF Lisboa, TA Machado 2016 Citations: 7
Transplantio semi-mecanizado de mudas de tomate em função da velocidade de operação T de Almeida Machado, FL Santos, DSM Valente, HC Fernandes, ... Revista Agro@ mbiente On-line 9 (1), 48-56 , 2015 2015 Citations: 7
Losses in industrial tomato harvesting according to harvester setting JPB Cunha, TA Machado, FL Santos, LM Coelho Pesquisa Agropecuária Tropical 44 (4) , 2014 2014 Citations: 6
Avaliação dos atributos físicos do solo em áreas inclinadas com sistema de plantio direto RS Milagres, T de Almeida Machado, LB Vieira, HC Fernandes Revista Ciência Agrícola 16 (3), 57-63 , 2018 2018 Citations: 5
Efeito de diferentes concentrações de biodiesel nas emissões gasosas de um trator agrícola em operação JPB Cunha, EF dos Reis, RF Couto, V Holtz, T de Almeida Machado, ... Revista Brasileira De Ciências Agrárias 10 (4), 564-569 , 2015 2015 Citations: 5
Perdas na plataforma de corte de uma colhedora combinada de grãos na colheita de soja T de Almeida Machado, FL Santos, JPB Cunha, DA da Cunha, ... Revista Engenharia na Agricultura-REVENG 20 (6), 537-543 , 2012 2012 Citations: 5
Modification of soil physical atributes as a function of subsoiling operations under different managements TA Machado, ÍNM Mendes, ER Moraes, EDTS Sousa Revista Brasileira de Engenharia Agrícola e Ambiental 27 (4), 293-299 , 2023 2023 Citations: 4
How to use TA Machado, AG Costa, JB Cunha Revista Cultivar Máquinas 174 (15), 9-11 , 2017 2017 Citations: 3
Physicochemical Attributes of Tomatoes after Different Forms of Harvesting and Transportation for Industrial Processing TA Machado, HC Fernandes, CM Guimarães, CA Megguer, WP Costa, ... Plos one 20 (4), e0319668 , 2025 2025 Citations: 2
Quality of phytosanitary application in Ricinus communis L. cultivation CF Lisboa, T MACHADO, EF dos Reis, LL Costa, CS da Silva Journal of Sustainable Development 17 (6), 127-127 , 2024 2024 Citations: 2
Drop spectrum in backpack sprayers in scarlet eggplant (Solanum aethiopicum) LC Coelho, T de Almeida Machado, AG Costa, EF dos Reis, CF Lisboa 2021 Citations: 2
Economic and operational analysis of tomato mechanized harvesting systems for industrial processing T de Almeida Machado, HC Ferandes, FL Santos, NÃT Santos, ... African Journal of Agricultural Research 13 (49), 2798-2803 , 2018 2018 Citations: 2
Perdas quantitativas e qualitativas dos frutos de tomate durante a colheita mecanizada TA Machado, HC Fernandes, CA Megguer, NT Santos, FL Santos Revista Brasileira de Engenharia Agrícola e Ambiental 22, 799-803 , 2018 2018 Citations: 2
Greenhouse gas emissions and energy consumption from different soil management practices in industrial tomato production in Brazil JPB Cunha, JCL Carvalho, TM Machado, T de Almeida Machado, ... Environmental Development, 101347 , 2025 2025 Citations: 1
Sistemas agroflorestais como alternativa de produção agrícola sustentável para a Região Amazônica IT Cavalcante, CF Lisboa, FLF de Jesus, T de Almeida Machado, ... Caderno Pedagógico 21 (4), e3807-e3807 , 2024 2024 Citations: 1
