Semeadoras-adubadoras em semeadura convencional de soja

Tourino, Maria Cristina Cavalheiro; Rezende, Pedro Milanez de; Silva, Lucas Alves da; Almeida, Luis Gustavo Pessôa de

doi:10.1590/s0103-84782009000100039

Cited by 16 publications

(15 citation statements)

References 3 publications

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“…The values obtained for normal distribution were below the capacity of the pneumatic seeder, wh ich should have as target 90% of normal spacing (Tourino et al, 2009;Melo et al, 2013;Weirich Neto et al, 2015) wh ich makes it possible to classify the quality of the seeder as good (75 to 90%) and bad for the crops (25 to 50%).…”

Section: Res Ults and Discussionmentioning

confidence: 95%

Performance of Corn Sowing in Fertilization System and Intercropping

et al. 2018

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The performance of the tractor-seeder can be influenced by factors related to the seeder, as loads and crop. The aim of the present study was to evaluate the performance of tractor-seeder at sowing in the corn crop in function of the fertilizer systems (at presowing and at sowing) and those intercropping of crops (corn + bean-Stizolobium deeringianum, corn + bean-Cajanus cajan and corn + bean-Dolichos lab lab). The experiment was carried out at FCAV-UNESP with totally randomized delineation, on factorial scheme (2x3) with four repetitions. The use of fertilization during the pre-sowing resulted in greater displacement speed and effective field capacity in the corn sowing operation, without changing the distribution of corn seeds; however, it demanded more power and volumetric and weight hourly consumption of the tractor fuel.

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Section: Res Ults and Discussionmentioning

confidence: 95%

Performance of Corn Sowing in Fertilization System and Intercropping

et al. 2018

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“…This situation can be explained by the fact that the lines intersect in cross-seeding system, with the greatest amount of distributed seeds when compared to the conventional system, having greater potential to avoid increasing the percentage of flawed spacings. Tourino et al (2009) reported that the seeders pneumatic systems may favor the reduction of flawed spacing and hence provide conditions for establishing more uniform plant stands, possibly reflecting in increased productivity. This result has contrast with the values obtained in the present study, despite the fact that the seeder-fertilizer also has pneumatic seed suction mechanism, since the percentage of flawed spacings can be considered high for both seeding systems evaluated.…”

Section: Resultsmentioning

confidence: 99%

Quality indicators of soybean conventional and cross-seeding

Voltarelli¹,

Silva²,

Zerbato³

et al. 2015

Científica

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The studies on the spatial arrangement of plants in cross-seeding soybean system are scarce, and then needed to check if this seeding system has higher quality compared to conventional. In this context, the aimed of this study was to evaluate the quality of cross-seeding soybeans compared to conventional, through statistical process control. The experiment was conducted in the agricultural area of Jaboticabal -SP, using a mechanized set tractor-seeder precision with spacing of sowing row set to 0.45 m, and the experimental design completely randomized with 30 repetitions for treatment in conventional sowing and soybean cross. The variables or assessed quality indicators consisted of longitudinal distribution of seeds (normal spacing, defective and double) and final seedling stand. Soybean crop quality indicators are essential to carry out the monitoring of variability and factors that influence the operation. The normal spacing feature is outside the control limits, both for conventional sowing, and for cross-seeding in the main line.Additional keywords: control charts; Glycine max; variability. ResumoEstudos sobre o arranjo espacial de plantas em sistema de semeadura cruzada de soja ainda são escassos, sendo então necessários a fim de verificar se este sistema de semeadura apresenta maior qualidade em relação ao convencional. Objetivou-se avaliar a qualidade de semeadura cruzada de soja em relação à convencional, por meio do controle estatístico de processo. O experimento foi conduzido utilizando um conjunto mecanizado trator-semeadora-adubadora de precisão com espaçamento entre fileiras de semeadura reguladas para 0,45 m, com 30 repetições para cada tratamento. As variáveis ou indicadores de qualidade avaliados constituíram-se da distribuição longitudinal das sementes (espaçamentos normais, falhos e duplos) e do estande final de plântulas. Os indicadores de qualidade da semeadura de soja são essenciais para realizar o monitoramento da variabilidade e os fatores que influenciam na operação. Os espaçamentos normais apresentam-se fora dos limites de controle, tanto para a semeadura convencional, quanto para a semeadura cruzada em sua linha principal.Palavras-chave adicionais: cartas de controle; Glycine max.; variabilidade.

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“…The pneumatic seed metering mechanism can provide a better distribution of seeds (TOURINO et al, 2009), less damage, better adjustment and better accuracy (ZHAN et al, 2010). Li et al (2012) highlighted the flexibility of the use with different types and sizes of seeds, with more precise dosing rates, less damage to the seed, better control and adaptation and a larger application spectrum.…”

Section: Introductionmentioning

confidence: 99%

Seeder performance under different pressures of vaccum and fuel consumption to soybean seeds

Lauriano¹,

Sousa²,

Dias³

et al. 2017

Biosci. J.

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ABSTRACT:In pneumatic precision seeders, the regularity in seeds deposition is essential for a proper sowing process. Thus, the aim of this study was to verify the accuracy in the soy beans seed capturing in different vacuum pressures (3.5 kPa; 4.0 kPa; 5.0 kPa; 5.5 kPa and 6.0 kPa), the seed distribution in the seed lines as well as the fuel consumption in the tractor-seed set. The experiment was carried out at the College of Agronomy -FCA/UNESP, Botucatu-SP. The outline was random blocks, in subplots layout banded of 30 × 3.15 m, with four replicates per treatment. A tractor-seeder set was used to collect the sample of fuel consumption and seed population. The real population of seed was collected in plastic bags fastened to the end of the conductor pipe, obtaining the population of the 5 central lines of the seeders. The acquisition of the fuel consumption data for each plot, was carried out using a flow meter. Thus, it was observed that the seeder distribution on the vacuum pressure at 3.5; 4.0 and 5.5 kPa decreased in the farthest lines when compared to the central lines. For the hourly fuel consumption, per area and also for the deposition of seeds the regularity in the distribution of seeds is affected when there is vacuum pressure below 5.0 kPa and, consequently, highest consumption. For soybean sowing, seeds having the characteristics described in this study, it is recommended to use vacuum pressure of 6.0 kPa. As a result, this vacuum pressure leads to the lowest fuel consumption per hour, 11.49 L h¯¹ and worked area, 7.35 L ha¯¹.

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Semeadoras-adubadoras em semeadura convencional de soja

Cited by 16 publications

References 3 publications

Performance of Corn Sowing in Fertilization System and Intercropping

Performance of Corn Sowing in Fertilization System and Intercropping

Quality indicators of soybean conventional and cross-seeding

Seeder performance under different pressures of vaccum and fuel consumption to soybean seeds

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