Maize Sowing Speeds and Seed-Metering Mechanisms

Ormond, Antônio Tassio Santana; Furlani, Carlos Eduardo Angeli; Oliveira, Maílson Freire de; Noronha, Rafael Henrique de Freitas; Tavares, Tiago de Oliveira; Menezes, Patricia Candida de

doi:10.5539/jas.v10n9p468

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…It was observed that the seed metering mechanism on the seed drill implements performed better in regulating the placement of seeds in the soil, and this resulted in the lowest number of seeds per hole. It is consistent with Ormond et al (2018) that the seed-metering device operating at lower speeds had better performance in the seeding process.…”

Section: Resultssupporting

confidence: 88%

Preliminary Field Evaluation of Seeds Drilling Assisted by a Tractor with Autopilot System

Zaman

Pebrian

2021

Adv Agric Food Res J

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Seed drilling is one of the steps in agricultural operations that always needs great attention as it will eventually affect crop production. In a mechanized seed drilling operation, the quality of operation is measured by how precise the seeds or seedlings were planted in the rows. This study was conducted to evaluate a tractor trailed by a tractor equipped with an autopilot system that functions to drive the tractor with a hands-free driving system. This machinery system was tested to plan corn seed on tilled dry soil. The tractor's operating speeds were set at three levels, i.e., 3.4, 4.2, and 5.5 km/hr. The effects of the different speeds were investigated towards numbers of seeds per hole, plants distance, and seedlings damage. Field capacity and average heart rate of tractor operator while conducting the operation were also measured. The findings showed significant differences between three operating speeds towards the number of seeds per hole and field capacity. Also, the observation showed that the operating speeds and field capacity have a close relationship, and the operating speeds with an average heart rate of an operator. The operating speed of 5.5 km/hr was the best for better work productivity, while the operating speed of 3.4 km/hr was highly recommended if seeds use efficiency become a preference. Generally, this study has successfully given introductory exploration for a tractor's potential usage with an autopilot system in seeds drilling operation for Malaysia's cash crop.

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Section: Resultssupporting

confidence: 88%

Preliminary Field Evaluation of Seeds Drilling Assisted by a Tractor with Autopilot System

Zaman

Pebrian

2021

Adv Agric Food Res J

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“…Tal fato foi demonstrado por Ormond et al (2018), operando nas velocidades de 2,0; 4,7; 6,5; 9,1 e 10,3 km h -1 , com os melhores percentuais de espaçamentos aceitáveis nas velocidades até 6,5 km h -1 , indicando que o aumento da velocidade pode acarretar aumento dos espaçamentos falhos e múltiplos para a cultura do milho, comprometendo a eficácia da semeadura. Carpes et al (2017) verificaram que, com o aumento da velocidade periférica do disco dosador de sementes, há uma tendência de redução no nível de precisão de deposição das sementes na linha de semeadura, diminuindo os espaçamentos aceitáveis entre plântulas.…”

Section: Introductionunclassified

Métodos De Avaliação Da Distribuição Longitudinal De Plântulas No Estabelecimento Inicial Da Cultura Do Milho

Rinaldi

Zampiróli

Alvarenga

et al. 2021

NAT

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A velocidade de trabalho é um dos fatores que pode influenciar a distribuição longitudinal de plântulas, o estande final e a produtividade da lavoura. Objetivou-se com este trabalho avaliar, em condições de campo, o desempenho de uma semeadora-adubadora no estabelecimento inicial da cultura do milho, em quatro velocidades de trabalho e dois mecanismos sulcadores por meio de dois métodos de medição entre plântulas. O delineamento experimental foi em blocos casualizados, com quatro repetições, combinando velocidades de trabalho e mecanismos sulcadores para deposição das sementes. A avaliação da distribuição longitudinal de plântulas se deu por dois métodos, manual e imagens captadas por aeronave remotamente pilotada. O aumento da velocidade de trabalho influenciou o percentual de espaçamento aceitáveis entre plântulas na velocidade de 6 km h-1 para a deposição da semente pelo sulcador de disco, método manual de avaliação. As variáveis relacionadas ao espaçamento entre plântulas não diferiram com o aumento da velocidade de trabalho do conjunto mecanizado e nem com a variação do sulcador pelo método de avaliação por imagem. A velocidade de trabalho não influenciou o índice de velocidade de emergência de plântulas, sendo este maior com o uso da haste. Palavras-chave: velocidade de trabalho; mecanismo sulcador; semeadora. Methods of evaluation longitudinal distribution of seedlings in the initial establishment of maize crops ABSTRACT: The working speed is one of the factors that can influence the longitudinal distribution of seedlings, the final stand and the productivity of the crop. The aim of the current study is to assess, under field conditions, the performance of a seed drill/fertilizer machine in the initial establishment of maize crops, according to four working speeds and two furrowing mechanism using two seedlings measurement methods. The experiment followed a randomized block design with four repetitions; it combined working speeds and furrowing mechanisms for seed deposition. The evaluation longitudinal distribution of seedlings of two methods, manual and images obtained with unmanned aerial vehicle. The increase in the working speed influenced the percentage of acceptable spacing between seedlings at the speed of 6 km h-1 for the deposition of the seed by the mismatched double disk-type furrow, manual method of evaluation. The variables related to spacing between seedlings did not differ with the increase in the working speed of the mechanized set without variation of the furrow by the image evaluation method. The working speed did not influence the seedling emergence speed index, being higher with furrow blade. Keywords: working speed; furrow mechanism; seeder.

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“…Although the structure of the mechanical seed-metering device is simple, it is designed strictly in accordance with the seeds' shape and volume, limiting its versatility [10] . Another shortcoming of the device is that seeds are prone to be damaged in seeding processes due to physical contacts [11,12] .…”

Section: Introduction mentioning

confidence: 99%

Magnetic field distribution simulation and performance experiment of a magnetic seed-metering device based on the combined magnetic system

Liu

Yao

et al. 2021

International Journal of Agricultural and Biological Engineering

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The magnetic seed-metering method is one of the universal approaches for plug tray seeding. Conventional electromagnetic and permanent-magnetic seed-metering devices either cannot supply a desirable magnitude of magnetic force or need a seed-clearing mechanism. Thus the objective of this research was to develop a combined magnetic system (CMS) seed-metering device for generating higher magnetic forces than the electromagnetic ones without using any auxiliary seed-clearing mechanisms. Firstly, the CMS component was designed and its magnetic field distributions in both attractive and clearing states were obtained by finite element method simulations. Secondly, based on the CMS components, a magnetic seed-metering device was developed and validated by a prototype experiment. The simulation results displayed that along the axial direction of the magnetic head, the maximum magnetic flux density in the clearing state was 21.03% of that in the attractive state. In addition, along the radial direction, the proportion was 24.16%. Concerning the spatial magnetic flux density distribution, the magnetic flux density on the seeding planes of CMS components (approximately 60 mT) was higher than that of transitional space between two CMS components (nearly 0 mT). As for the seeding performance experiment, when the rotational speed of the roller was 21 r/min and the exciting current was 0.15 A, the highest single rate was acquired (90.20%). In the same condition, the reseeding rate was 5.88% and the miss-seeding rate was 3.92%. The results suggest that the magnetic field distribution and seeding performance of the developed magnetic seed-metering device are acceptable. Therefore, the developed magnetic seed-metering device can be used in practical plug tray seeding processes.

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Maize Sowing Speeds and Seed-Metering Mechanisms

Cited by 4 publications

References 14 publications

Preliminary Field Evaluation of Seeds Drilling Assisted by a Tractor with Autopilot System

Preliminary Field Evaluation of Seeds Drilling Assisted by a Tractor with Autopilot System

Métodos De Avaliação Da Distribuição Longitudinal De Plântulas No Estabelecimento Inicial Da Cultura Do Milho

Magnetic field distribution simulation and performance experiment of a magnetic seed-metering device based on the combined magnetic system

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