Operational performance of a tractor-seeder according to the velocity and working depth

Macedo, Deivielison Ximenes Siqueira; Nicolau, Francisca Edcarla de Araújo; Nascimento, H.C.F. Do; Costa, Enio; Chioderoli, Carlos Alessandro; Loureiro, Danilo Roberto

doi:10.1590/1807-1929/agriambi.v20n3p280-285

Cited by 9 publications

(9 citation statements)

References 18 publications

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“…Considering that corn crop is highly dependent on plant stand to achieve high grain yield since this plant has low recovery capacity (Vian et al, 2016), it is essential to study the operational factors involved in the quality of sowing and implantation of this crop, aiming at the proper longitudinal seed distribution and the correct depth of deposition in the soil because the excellence in the operational process of mechanized sowing contributes to the success of the productive system (Macedo et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Seed Metering Mechanisms and Tractor-Seeder Forward Speed on Corn Agronomic Components

2020

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Seed metering system and tractor-seeder forward speed are factors that affect sowing. Therefore, this study aimed to evaluate sowing and agronomic components of corn as a function of seed metering mechanism and tractor-seeder forward speed, in addition to evaluating the yield data obtained from a harvester with a yield monitor. The soil of the area is classified as Distroferric Red Latosol. The experiment was set up in the second crop season of 2018 and treatments consisted of two seed metering mechanisms (M) (pneumatic and mechanical), and tractor-seeder forward speeds (S) (3, 5, 7, and 9 km h −1 ). The pneumatic system promoted the best longitudinal distribution, with values above 90%, and the increased sowing forward speed reduced normal spacings and increased failure. The interaction M × S indicated that pneumatic seeder promotes the best stand at the highest forward speed, normal spacing, and less failure. The yield data showed less variation with increasing forward speed, and the best result was observed for the mechanical seeder at 5 km h −1 when these data are grouped into yield classes.

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Section: Introductionmentioning

confidence: 99%

Seed Metering Mechanisms and Tractor-Seeder Forward Speed on Corn Agronomic Components

2020

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“…The authors found that the PT varied significantly from 22.3 to 24.9 kW when the shank working depth increased from 0.11 to 0.17 m, with the tractor-seeder set running at a speed of 1.18 and 1.14 m s -1 , respectively. Macedo et al (2016), evaluating the changing energy demand in soil with 10.6% clay caused by the deepening of the furrow opener shank, found that PT was 12.23, 15.5, and 22.99 kW when the shank worked at the depths of 0.05, 0.10, and 0.15 m, respectively. These PT results are relatively low compared to the present research and are probably associated with differences in clay content.…”

Section: Resultsmentioning

confidence: 99%

Tractive Demand, Soil Mobilization Parameters, and Corn Yield in Compacted Oxisol

et al. 2019

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Direct seeding systems are characterized by soil disturbance only occurring in the sowing line and the maintenance of the remaining area is achieved by covering with crop residues. Without total area soil mobilization as recommended by the no-tillage system, associated with the increase in the degree of soil compaction caused by the traffic of agricultural machinery, there can be a decrease in crop productivity. This study aimed to evaluate machine parameters, soil mobilization, and corn yield as a function of different furrow opener working depths (0.065, 0.095, 0.125, and 0.150 m) and evaluate the direct seeding of winter ground cover plants (black oat or forage turnip) in compacted Oxisol. The experiment was arranged in strips, in a randomized block design, with eight treatments and four replications. The deepening of the furrow opener shank increased the strength and power required at the drawbar in the seeding operation, as well as increased the soil mobilization in the seeding line. However, it did not prove to be an efficient management practice to increase corn productivity.

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“…O experimento foi conduzido na área experimental do Laboratório de Investigação de Acidentes com Máquinas Agrícolas pertencente ao Departamento de Engenharia Agrícola da Universidade Federal do Ceará, com classificação climática, segundo Köppen (1918) de Aw', definida como tropical chuvoso. De acordo com Macedo et al (2016) o solo da área é classificado como Argissolo Vermelhoamarelo (EMBRAPA, 2006), com classe textural franco arenosa, sendo que o percentual de areia é de 82,90%, 10,60% de argila e 6,40% de silte (EMBRAPA, 1997).…”

Section: Methodsunclassified

Vibração Em Mãos E Braços Na Utilização De Trator De Rabiça Equipado Com Rotoencanteirador

et al. 2020

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VIBRAÇÃO EM MÃOS E BRAÇOS NA UTILIZAÇÃO DE TRATOR DE RABIÇA EQUIPADO COM ROTOENCANTEIRADOR KARLA LÚCIA BATISTA ARAÚJO¹, LEONARDO DE ALMEIDA MONTEIRO², VIVIANE CASTRO DOS SANTOS3, DEIVIELISON XIMENES SIQUEIRA MACEDO4, FRANCISCA EDCARLA DE ARAÚJO NICOLAU5 1 Universidade Federal do Ceará -UFC, Departamento de Engenharia Agrícola, Bloco 804, Pici, 60020-181, Fortaleza-CE, Brasil. karla.batista@hotmail.com 2 Centro de Ciências Agrárias, Universidade Federal do Ceará -UFC, Departamento de Engenharia Agrícola, Bloco 804, Pici, 60020-181, Fortaleza-CE, Brasil. aiveca@ufc.br 3 Centro de Ciências Agrárias, Universidade Federal do Ceará -UFC, Departamento de Engenharia Agrícola, Bloco 804, Pici, 60020-181, Fortaleza-CE, Brasil. vihcs@live.com 4 Centro de Ciências Agrárias, Universidade Federal do Ceará -UFC, Departamento de Engenharia Agrícola, Bloco 804, Pici, 60020-181, Fortaleza-CE, Brasil. derilsiqueira@hotmail.com 5 Centro de Ciências Agrárias, Universidade Federal do Ceará -UFC, Departamento de Engenharia Agrícola, Bloco 804, Pici, 60020-181, Fortaleza-CE, Brasil. edcarla@hotmail.com RESUMO: O uso da tecnologia no campo veio para amenizar as intempéries às quais o trabalhador rural é submetido. A difusão dos microtratores na agricultura familiar ajuda a diminuir a carga física imposta a esses agricultores e o tempo de trabalho. Todavia o contato com essa tecnologia expõe o agricultor a novos problemas advindos da máquina sendo um deles a vibração. A redução da vibração, além de diminuir o estresse do operador, permite melhorar qualidade de vida e aumenta a eficiência no trabalho reduzindo a fadiga. Assim objetivou-se avaliar os níveis de vibração de um trator de rabiça acoplado com rotoencanteirador em diferentes rotações do motor e alocações de marchas no preparo do solo. O delineamento experimental utilizado foi em blocos inteiramente casualizados, em esquema fatorial 3 x 3, com 10 repetições sendo 3 rotações (600, 800 e 1000 rpm) e 3 marchas (3ª, 4ª e 5ª). Foram utilizados a estatística descritiva e o teste de Tukey a 5% para comparação das médias. Observou-se que as médias da terceira marcha nas rotações de 600 e 800 rpm foram as que mais se aproximaram da norma NHO 10 (2013), já que a mesma estabelece o valor de 2,5 m.s-2 como limite de vibração para mãos e braços toleráveis para uma jornada de trabalho. Palavras-chave: insalubridade, segurança na agricultura, bem-estar no trabalho. HANDS AND ARMS VIBRATION IN THE USE OF HANDLEBAR TRACTOR EQUIPPED WITH ROTOENCANTEIRATOR ABSTRACT: The use of the technology in the field comes to soften the intempéries to which the rural worker is submitted. A spread of microtractors in family farming helps to reduce the physical burden on farmers and working time. However the contact with this technology exposes the farmer to new problems coming from the machine being its vibration. Reducing vibration, in addition to reducing operator stress, can improve the quality of life and increase work efficiency by reducing fatigue. The aim of this study was to evaluate the vibration levels of a bulldozer coupled with rotoencanteirator at different engine speeds and to allocate gears without soil preparation. The experimental design was used in completely randomized blocks, in a 3 x 3 factorial scheme, with 10 repetitions being 3 rotations (600, 800 and 1000 rpm) and 3 marches (3rd, 4th and 5th). It was quite descriptive statistic and Tukey Test at 5% for average comparisons. It was observed that as average of the third gear at the 600 and 800 rpm rotations were as close to the NHO 10 (2013), since the same thing is the value of 2.5 m.s-2 as vibration limits for the hands and arms tolerable for a day's work. Keywords: insalubrity, safety in agriculture, well-being at work.

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Operational performance of a tractor-seeder according to the velocity and working depth

Cited by 9 publications

References 18 publications

Seed Metering Mechanisms and Tractor-Seeder Forward Speed on Corn Agronomic Components

Seed Metering Mechanisms and Tractor-Seeder Forward Speed on Corn Agronomic Components

Tractive Demand, Soil Mobilization Parameters, and Corn Yield in Compacted Oxisol

Vibração Em Mãos E Braços Na Utilização De Trator De Rabiça Equipado Com Rotoencanteirador

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