Operating performance of an agricultural tractor fitted with two types of tyres under two types of terrain Tainara Regina Cerutti Torres Bahia, Cristiano Marcio Alves de Souza, Jackson Antonio Barbosa, Roberto Carlos Orlando Revista Ciencia Agronomica, 2025 The correct use of tyres on agricultural tractors, in respect of the terrain and the type and internal pressure of the tyre,are factors that infl uence the performance of the tractor. The aim of the present study was to evaluate the operating performance of anagricultural tractor fi tted with two types of traction device (radial and diagonal tyres) at diff erent pressures, and operating on soil withtwo levels of moisture. The experiment was conducted on a dystrophic Red Yellow Argisol, with tests to evaluate the performance ofthe tyres under specifi c working conditions. Tractive power and tractive force, wheel slip and fuel consumption were evaluated. Foreach of the conditions under evaluation, the radial confi guration showed better performance than the diagonal confi guration, the eff ectbeing more signifi cant at the lower pressure and under low soil moisture. The use of radial tyres led to an increase in traction capacityand drawbar power, with a reduction in fuel consumption, especially at higher slip rates.
Simulated performance of a tractor equipped with two types of tyre under two levels of soil moisture João Pedro Rodrigues da Silva, Cristiano Márcio Alves de Souza, Roberto Carlos Orlando, Jackson Antonio Barbosa, Tainara Regina Cerutti Torres Bahia Revista Ciencia Agronomica, 2025 Due to the importance of grain production, and the need to work the soil under limited moisture, the aim of this study was to develop computer software to predict the tractive capacity of wheeled tractors for two types of tyre, the effect of different inflation pressures and levels of soil moisture. A mathematical model was developed to predict the tractive capacity of a 4 x 2 AFT tractor. Software was developed and tested by comparing the computational data with those from tests of a working tractor in the field. The parameters under evaluation were drawbar force and front and rear drive wheel slip. At both moisture levels, the bias tyres had the lowest front to rear slip ratio at the lower pressure; the ratios were similar when equipped with radial tyres. The bias tyres show maximum force at a slip ratio of 1.09 at the higher pressure and 1.03 at the lower, while for the radial tyres the ratio was 1.05 at the higher pressure and 1.07 at the lower. Software was developed to process data from the model, with the results used for estimating the tractive force of the tractor. The tractive force was overestimated by the model, which needs further adjustment for direct application in the field.
Characterization and mitigation measures for carbon dioxide, methane, and ammonia emissions in dairy barns Victor Crespo de Oliveira, Leonardo França da Silva, Carlos Eduardo Alves Oliveira, José Rafael Franco, Sergio Augusto Rodrigues, Cristiano Márcio Alves de Souza, Rafaella Resende Andrade, Flávio Alves Damasceno, Ilda de Fátima Ferreira Tinôco, Gianluca Bambi Livestock Science, 2024 The agricultural sector is a major contributor to global greenhouse gas emissions, with dairy production being a significant source. In this context, the study aims to characterize CO₂, CH₄, and NH₃ emissions—key gases in dairy barns—and to evaluate strategies for mitigating these emissions. Inside dairy barns, the primary sources of CO₂, CH₄, and NH₃ emissions are linked to the enteric processes of the animals and the waste deposited within the dairy barns. CO₂ mainly originates from animal respiration and the decomposition of organic matter. CH₄ is generated through enteric fermentation in the rumen and the anaerobic decomposition of manure. Additionally, NH₃ is released from the enzymatic breakdown of urea in urine. Mitigation efforts have shown promise within dairy barns through various approaches. Optimizing animal diets by incorporating supplements and controlling protein intake helps reduce methane production from enteric fermentation. Enhanced manure management practices, including separating feces and urine, adjusting manure pH, and increasing cleaning frequency, are effective in minimizing ammonia and methane emissions within dairy barns. Nevertheless, achieving significant emission reductions also requires effective waste management beyond the facilities. This study contributes to the ongoing dialogue on sustainable livestock production by addressing both emission sources and potential solutions in dairy farming.
Physical-chemical properties of spray syrup in tank-mixing multiple pesticides and water sources used in grain farming Fernando Burin, Cristiano Marcio Alves de Souza, Ivan Ramires, Paulo Vinicius Da Silva Revista De La Facultad De Ciencias Agrarias, 2022 This work evaluated physical-chemical properties of spraying syrup formulated with different water types and using or not tank-mixing pesticides. The experimental design was completely randomized in a 4 x 5 factorial scheme (4 water types and 4 pesticide syrups + control, non-sprayed plant) in three sampling times (off-season corn, pre-planting soybean weed control, and soybean season) within one year. Water treatments consisted of deionized, well, river and weir water. Product mixing consisted of herbicide (Glyphosate 925 g a.i. ha-1), herbicide + insecticide (Imidacloprid + beta-cyfluthrin 100+12.5 g a.i. ha-1), herbicide + fungicide (Trifloxystrobin + Prothioconazole 70+60 g a.i. ha-1) and herbicide + insecticide + fungicide. Weir water presented the worst physical quality. Spraying syrup prepared with tank-mixing herbicide, insecticide, and fungicide in various combinations decreased the effectiveness of the pesticide. When associating the three pesticides, less dissolution of the spray syrup and greater risk of syrup incompatibility leads to pesticide ineffectiveness. Highlights: The water type used in tank-mixing multiple pesticides affects spraying syrup quality. Water with the worst physical quality decreases pesticide performance. Less dissolution and greater risk of fungicide ineffectiveness take place when three pesticides are associated. Spraying syrup prepared with tank-mixing pesticides increased in the successive cultivation of soybean/corn.
ARTIFICIAL NEURAL NETWORKS TO PREDICT EFFICIENCIES IN SEMI-MECHANIZED BEAN (Phaseolus vulgaris L.) HARVEST Cristiano M. A. de Souza, Marcondes de S. Padilha, Sálvio N. S. Arcoverde, Leidy Z. L. Rafull Engenharia Agricola, 2022 Bean is among the most consumed and produced crops in Brazil. Given the high demand for food, the search for technologies and controllers to increase the efficiency of agricultural systems has grown. This study aimed to model artificial neural network (ANN) architectures to predict mechanical efficiencies in the semi-mechanized bean harvest. We used a multilayer perceptron network with three inputs (harvest moisture, threshing rotor rotation, and feed rate), two hidden layers of neurons, and one output (efficiency). We evaluated the efficiency in the header, separation on the threshing rotor, cleaning of sieves, and the total efficiency of the machine. ANN was processed by a scripted algorithm to model the network, alternate the number of neurons in hidden layers, as well as to select, test, and validate ANN with less error. ANN was validated by comparing its results with the experimental data. The architectures selected to predict efficiencies were 3-8-15-1 for the header, 3-9-7-1 for the thresher and separation, 3-5-11-1 for cleaning, and 3-15-10-1 for the total operation. ANN predicted satisfactory results with errors below 1% and a high hit rate, thus being valid to predict the efficiencies in the semi-mechanized bean harvest.
Least limiting water range in Oxisol under two conservation tillage systems in sugarcane farming Cristiano Márcio Alves de Souza, Andrés Hideki Tanaka Suárez, Sálvio Napoleão Soares Arcoverde, Egas Jose Armando, Paulo Alexandre Graciano Maciak Revista Ceres, 2022 The Least Limiting Water Range (LLWR) is an indicator of soil physical quality, contributing in information to propose soil management systems in agricultural farming process. This work aimed to assess the usage of LLWR and critical soil bulk density for physical-water quality evaluations, as well as its effect on sugarcane farming under no-tillage and reduced-tillage, in Oxisol. Undisturbed soil samples were collected in 0.00-0.10 and 0.10-0.20 m soil layers, to determine the following attributes: soil bulk density, soil penetration resistance (PR), volumetric water content at field capacity and permanent wilting point and minimum aeration porosity. The LLWR proved to be a good soil physical water quality indicator in sugarcane farming under conservation tillage system. No-tillage presented a greater range of the LLWR when compared to the reduced-tillage, regardless to the PR value adopted as restrictive for sugarcane roots development, increasing the yield of stalks and sugars contents. The critical soil bulk density under no-tillage is between 1.48 and 1.53 Mg m-3 at the RP of 2 and 4 MPa, while under reduced-tillage it is between 1.44 and 1.51 Mg m-3.
Performance of a planter-fertiliser under reduced soil preparation: furrowers, speeds and depths when sowing maize Cristiano Márcio Alves de Souza Revista Ciencia Agronomica, 2022 - The search to optimise agricultural systems by adapting mechanised sets for sowing maize, is essential for improving operational performance, energy efficiency and initial crop establishment. The aim of this study was to evaluate the performance and sowing quality of a planter-fertiliser for maize, in a dystroferric Red Latosol managed under reduced tillage, as a function of the type of furrower, depth of seed deposition and operating speed of the planter. The experimental design was completely randomised, in a split-plot scheme with three replications, where the plots represented the type of furrowing mechanism (shank or double-disk) and the subplots represented three displacement speeds (3.20, 5.15 and 7.32 km h -1 ) and two sowing depths (35 and 40 mm). The best sowing quality for second-crop maize, the lowest power requirement at the tractor drawbar, the lowest specific and hourly fuel and consumption time, and the lowest travel reduction ratio are achieved when the tractor-planter-fertiliser set is configured to use a double-disk at a sowing depth of 35 mm. The adoption of higher displacement speeds results in increased operational and effective field capacity, as well as a lower energy demand when the tractor-planter-fertiliser set develops speeds close to or greater than 7.32 km h -1 , irrespective of furrower type or soil depth
Spray solution deposition and asian rust control in soybean cultivars Antonio L. Viegas Neto, Cristiano M. A. de Souza, Izidro dos S. de Lima Júnior, Lígia M. M. da S. Piletti, Karina de J. E. Martins, Bruno F. Bertoncello Revista Brasileira De Engenharia Agricola E Ambiental, 2021 The control of Asian soybean rust depends on fungicide efficacy and the application technology; however, the leaf architecture of soybean cultivars may also interfere in disease control. This study aimed to evaluate Asian rust control and fungicide deposition using spray nozzles in three soybean cultivars. A randomized block design was used, with treatments arranged in a split-plot scheme; the plots were three soybean cultivars (SYN 1561 IPRO, M6410 IPRO, and M6210 IPRO) and the subplots three spray nozzles (11002 BD, AIXR 110015 and TTJ60 11002), in addition to a control with no fungicide application, and four replicates. The volume median diameter, droplet coverage, leaf area index, area under the disease progress curve, 1,000-grain weight and crop yield were evaluated. The 11002BD and AIXR11005 nozzles provided better spray deposition in cultivars with lower leaf area indexes at the R1 phenological stage. Nozzles 11002BD, AIXR110015 and TTJ60 ensured better management of Asian rust than that of the control treatment, regardless of leaf area index. Cultivar SYN1561 obtained the largest grain yield and highest leaf area index in the season with the highest rainfall, regardless of the spray nozzle used.
Soybean agronomic performance and soil physical attributes under tractor traffic intensities Sálvio N. S. Arcoverde, Cristiano M. A. de Souza, Leidy Z. L. Rafull, Jorge W. Cortez, Roberto C. Orlando Engenharia Agricola, 2020 Machinery traffic intensification has been recurrent in intensive agriculture in annual crops, which may lead to structural soil degradation and, consequently, a reduction of its productive capacity. Therefore, this study aimed to assess the influence of tractor traffic intensification on soil physical attributes and soybean yield components. The study was performed in an Oxisol under no-tillage for 10 years, using a randomized block design with five tractor traffic intensities (0, 2, 4, 6, 8, and 12 passes) and five replications. Density, porosity, macroporosity, microporosity, and penetration resistance were assessed in the soil and stem diameter, number of pods per plant, number of grains per pod, grain weight per plant, thousand-grain weight, and grain yield were assessed in the soybean crop. Tractor traffic intensification changed soil physical attributes, which were not limiting factors to soybean yield under the no-tillage system, providing higher stem diameter, number of pods per plant, grain weight per plant, and grain yield after 12 passes.
Correlation between apparent electrical conductivity and chemical and physical attributes of a Rhodic Hapludox Comunicata Scientiae, 2015
Sampling grid density and lime recommendation in an Oxisol Eduardo L. Bottega, Daniel M. de Queiroz, Francisco A. C. Pinto, Antonio M. de Oliveira Neto, Cesar C. Vilar, Cristiano M. A. de Souza Revista Brasileira De Engenharia Agricola E Ambiental, 2014
Physical properties of peanut kernels during drying Willian D. Araujo, André L. D. Goneli, Cristiano M. A. de Souza, Alexandre A. Gonçalves, Henrique C. B. Vilhasanti Revista Brasileira De Engenharia Agricola E Ambiental, 2014
Anatomy of maize roots in compacted soil Anderson Cristian Bergamin, Antonio Carlos Tadeu Vitorino, Beatriz Lempp, Cristiano Márcio Alves de Souza, Fábio Régis de Souza Pesquisa Agropecuaria Brasileira, 2010
DENGUE EM PACIENTES COM LEUCEMIA MIELOIDE CRÔNICA E NEOPLASIAS MIELOPROLIFERATIVAS BCR:: ABL1 NEGATIVAS MC Marques, GO Duarte, GBD Amarante, C Cralcev, PM Campos, ... Hematology, Transfusion and Cell Therapy 47, 104413 , 2025 2025
LMC COM TRANSCRITOS ATÍPICOS BCR:: ABL1: SÉRIE DE CASOS JS Freitas, V Funke, I Luise, R Vasconcelos, G Duarte, G Duffles, I Toni, ... Hematology, Transfusion and Cell Therapy 47, 105422 , 2025 2025
NEUROPATIA ÓPTICA ISQUÊMICA ANTERIOR NÃO ARTERÍTICA (NOIA-NA) INDUZIDA POR NILOTINIBE EM PACIENTE COM LEUCEMIA MIELOIDE CRÔNICA: UM RELATO DE CASO CP Trois, CSD Fraga, AV Valler, G Duarte, G Duffles, MS Gasparini, ... Hematology, Transfusion and Cell Therapy 47, 104447 , 2025 2025
Modeling and simulating the harvester header dynamics using 3-way valve and PID controller CMA de Souza, LZL Rafull, DM de Queiroz, LP Ale, LF da Silva, ... Measurement, 119116 , 2025 2025
Potencial de contaminação do rejeito de mineração oriundo do rompimento da barragem de fundão, Mariana, MG GC Rocha, LF da Silva, JMS Crusoé, JR Franco, CMA de Souza, ... Revista de Biotecnologia & Ciência (ISSN 2238-6629) 14, e16334-e16334 , 2025 2025
AVALIAÇÃO DO EFEITO DE RESÍDUOS ORGÂNICOS DO ABATE DE BOVINOS NA LIXIVIAÇÃO DE NITRATO EM LATOSSOLO VERMELHO-AMARELO JR Franco, GC Rocha, LF da Silva, JMS Crusoé, CMA de Souza Tekhne e Logos 16 (1), 52-63 , 2025 2025
Analysis of operational performance and costs of log loaders under different conditions CF Lima, LF Silva, CMA Souza, FAC Ferreira, LJ Minette, FMP Mendieta, ... Forests 16 (6), 913 , 2025 2025 Citations: 2
Circulating monocytes contribute to erythrocyte clearance in polycythemia vera MD Borges, IF Paes, DP Leonardo, CM Souza, DM Albuquerque, ... International Journal of Molecular Sciences 26 (11), 5133 , 2025 2025 Citations: 2
Balanço de carbono: uma análise comparativa entre cultivos de eucalipto e cana-de-açúcar LF da Silva, GC Rocha, JMS Crusoé, CMA de Souza, JR Franco, CF Lima, ... Revista de Biotecnologia & Ciência (ISSN 2238-6629) 14, e16335-e16335 , 2025 2025
Coeficientes de cultura e consumo hídrico nas diferentes fases fenológicas do milho irrigado GHBT Menezes, LF da Silva, D dos Reis Pereira, JR Franco, ... Revista de Biotecnologia & Ciência (ISSN 2238-6629) 14, e16292-e16292 , 2025 2025
Modelos empíricos na determinação da lâmina de irrigação em cultivos na microrregião de Unaí, Minas Gerais LB Batista, LF da Silva, D dos Reis Pereira, JR Franco, JRS de Oliveira, ... Revista de Biotecnologia & Ciência (ISSN 2238-6629) 14, e16286-e16286 , 2025 2025
Ergonomic evaluation of carbonizing activity in kilns-furnace system NV Guimarães, S Schettino, EEP Baraúna, LF da Silva, CMA de Souza, ... Caderno Pedagógico 22 (6), e15513-e15513 , 2025 2025
MODELAGEM USANDO INTELIGÊNCIA ARTIFICIAL PARA ANÁLISE E CLASSIFICAÇÃO DA QUALIDADE DE GRÃOS DE FEIJÃO COLHIDOS POR COLHEDORA AN Strada, EF da Silva, GM Fortes, AB Saccomani, CMA de Souza Anais New Science Publishers| Editora Impacto , 2025 2025
OTIMIZAÇÃO DA CAPACIDADE DE TRAÇÃO DE TRATOR AGRÍCOLA UTILIZANDO PROGRAMAÇÃO EM PYTHON AB Saccomani, GM Fortes, EF da Silva, AN Strada, CMA de Souza Anais New Science Publishers| Editora Impacto , 2025 2025
Condutividade hidráulica do solo não saturado em diferentes sistemas de preparo de solo MA Santos, LF da Silva, JMS Crusoé, GC Rocha, JR Franco, ... Revista de Biotecnologia & Ciência (ISSN 2238-6629) 14, e16298-e16298 , 2025 2025 Citations: 1
Development and testing of a low-cost portable soil apparent electrical conductivity sensor JC Venturin, CM Alves de Souza, ED Prado, EL Bottega, ... AIP Advances 15 (3) , 2025 2025 Citations: 2
Uniformidade da distribuição volumétrica de bicos hidráulicos utilizados em pulverização agrícola A Luiz Viegas Neto, C Márcio Alves de Souza, J Matos do Nascimento, ... 2025
UNIFORMIDADE DA DISTRIBUIÇÃO VOLUMÉTRICA DE BICOS HIDRÁULICOS UTILIZADOS EM PULVERIZAÇÃO AGRÍCOLA. AL Viegas Neto, CM Alves de Souza, J Matos do Nascimento, ... Global Science & Technology 16 (2) , 2025 2025
INFLUÊNCIA DE VARIÁVEIS CLIMÁTICAS NO APARECIMENTO DA FERRUGEM ASIÁTICA DA SOJA RGA Maciel, LF da Silva, VC de Oliveira, FLF de Jesus, DM Guedes, ... Tekhne e Logos 15 (3), 51-65 , 2024 2024
Characterization and mitigation measures for carbon dioxide, methane, and ammonia emissions in dairy barns VC De Oliveira, LF Da Silva, CEA Oliveira, JR Franco, SA Rodrigues, ... Livestock Science 290, 105595 , 2024 2024 Citations: 5
MOST CITED SCHOLAR PUBLICATIONS
Variabilidade espacial de atributos do solo em sistema de semeadura direta com rotação de culturas no cerrado brasileiro EL Bottega, DM Queiroz, FAC Pinto, CMA Souza Revista Ciência Agronômica 44, 1-9 , 2013 2013 Citations: 148
Compactação em um Latossolo Vermelho distroférrico e suas relações com o crescimento radicular do milho AC Bergamin, ACT Vitorino, JC Franchini, CMA Souza, FR Souza Revista Brasileira de Ciência do Solo 34 (3), 681-691 , 2010 2010 Citations: 117
Propriedades físicas dos grãos de amendoim durante a secagem WD Araujo, ALD Goneli, C Souza, AA Gonçalves, HCB Vilhasanti Revista Brasileira de Engenharia Agrícola e Ambiental 18, 279-286 , 2014 2014 Citations: 97
Adubação verde e rotação de culturas CM Souza, FR PIRES, FL PARTELLI, RL ASSIS Viçosa: Ed. UFV , 2012 2012 Citations: 69
Práticas mecânicas de conservação do solo e da água FR PIRES, CM Souza Viçosa: UFV , 2003 2003 Citations: 57
Intervalo hídrico ótimo em um Latossolo Vermelho distroférrico sob diferentes sistemas de produção ME Serafim, ACT Vitorino, PPP Peixoto, CMA Souza, DF Carvalho Engenharia Agrícola 28 (4), 654-665 , 2008 2008 Citations: 53
Variabilidade espacial da resistência do solo à penetração em um Latossolo Vermelho distroférrico EL Bottega, SP Bottega, SA Silva, DM de Queiroz, CMA de Souza, ... Agrária-Revista Brasileira de Ciências Agrárias 6 (2), 331-336 , 2011 2011 Citations: 49
Desempenho de semeadora-adubadora utilizando-se dois mecanismos rompedores e três pressões da roda compactadora A Koakoski, CMA Souza, LZL Rafull, LCF Souza, EF Reis Pesquisa Agropecuária Brasileira 42 (5), 725-731 , 2007 2007 Citations: 38
Infiltração de água no solo em áreas cultivadas com cana-de-açúcar sob diferentes sistemas de colheita e modelos de ajustes de equações de infiltração BA Tomasini, ACT Vitorino, MV Garbiate, CMA Souza, T A. Sobrinho Engenharia Agrícola 30 (6), 1060-1070 , 2010 2010 Citations: 36
Vibração e ruído emitidos por dois tratores agrícolas JPAR da Cunha, MA Viana Duarte, CMA de Souza Idesia (Arica) 30 (1), 25-34 , 2012 2012 Citations: 33
Anatomia radicular de milho em solo compactado AC Bergamin, ACT Vitorino, B Lempp, CMA Souza, FR Souza Pesquisa Agropecuária Brasileira 45 (3), 299-305 , 2010 2010 Citations: 32
Rugosidade da superfície do solo sob diferentes sistemas de manejo e influenciada por chuva artificial E Panachuki, I Bertol, T Alves Sobrinho, ACT Vitorino, CMA Souza, ... Revista Brasileira de Ciência do Solo 34, 443-452 , 2010 2010 Citations: 30
Deteminação do limite de liquidez em dois tipos de solo, utilizando-se diferentes metodologias CMA Souza, LZL Raful, LB Vieira Revista Brasileira de Engenharia Agrícola e Ambiental 4 (3), 460-464 , 2000 2000 Citations: 29
Granulometric characterization of sediments transported by surface runoff generated by moving storms J De Lima, CS Souza, VP Singh Nonlinear Processes in Geophysics 15 (6), 999-1011 , 2008 2008 Citations: 27
Crescimento e produção de espécies forrageiras consorciadas com pinhão-manso JAN Silva, CMA Souza, CJ Silva, SP Bottega Pesquisa Agropecuária Brasileira 47, 769-775 , 2012 2012 Citations: 26
Rotação de culturas e relações com atributos químicos e microbiológicos do solo e produtividade do milho ERP Lourente, FM Mercante, ME Marchetti, LCF de Souza, ... Semina: Ciências Agrárias 31 (4), 829-842 , 2010 2010 Citations: 26
Precision agriculture applied to soybean: Part I-Delineation of management zones EL Bottega, DM de Queiroz, F de Assis de Carvalho Pinto, CMA de Souza, ... Australian Journal of Crop Science 11 (5), 573-579 , 2017 2017 Citations: 23
Soil physical attributes and production components of sugarcane cultivars in conservationist tillage systems SNS Arcoverde, C Souza, JW Cortez, PAG Maciak, AHT Suárez Engenharia Agrícola 39, 216-224 , 2019 2019 Citations: 22
Derriçadora portátil na colheita total e seletiva de frutos do cafeeiro CMA Souza, DM Queiroz, LZL Rafull Pesquisa Agropecuária Brasileira 41, 1637-1642 , 2006 2006 Citations: 22
Atributos físicos do solo cultivado com cana-de-açúcar em função do preparo e época de amostragem SNS Arcoverde, CMA de Souza, AHT Suarez, BA Colman, ... Revista de Agricultura Neotropical 6 (1), 41-47 , 2019 2019 Citations: 21