Velocidade de semeadura da soja

Jasper, Roberto; Jasper, Mônica; Assumpção, Paulo S. M; Rocil, Jorge; Garcia, Luiz Cláudio

doi:10.1590/s0100-69162011000100010

Cited by 44 publications

(39 citation statements)

References 4 publications

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“…However, in the speed of 7.8 km h -1 the CT management system showed the highest value of pods per plant, but did not differ from the NT system. JASPER et al (2011) found no effect on the yield of soybean components when the sowing speed varied from 4 to 12 km h -1 , which was not verified in this study.…”

Section: Resultscontrasting

confidence: 87%

“…PEREIRA et al (2011) confirm that for soil management systems (conventional tillage, reduced tillage and no tillage) after five years of cultivation, showed no difference to the stand of soybeans and productivity. JASPER et al (2011) state that the sowing speed (4, 6, 8, 10 and 12 km h-¹) do not affect the plants population, whether for pneumatic doser or horizontal disc, which contradicts this study. The sowing speed influenced the plants stand, being better at the speed of 5.5 km h -1 with 11.91 plants per meter, and the others: 4.6; 7.3 and 7.8 km h -1 with 10.21; 9.58 and 9.83 plants per meter, respectively (Table 4 and Figure 3), which resulted in a quadratic adjust model in the regression.…”

Section: Resultscontrasting

confidence: 85%

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Penetration resistance and agronomic characteristics of soybean affected by soil management and sowing speed systems

et al. 2016

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ABSTRACT:With the short period of the sowing process, we observed an increase in the seeder speed set in several soil management systems that may result in decreased soybean yield and problems with penetration resistance. We aimed to assess the penetration resistance (PR) and agronomic characteristics of soybean on soil tillage and sowing speed. The randomized block design in split plot with four replications was used. The treatments consisted of six management systems, applied to the plots: no tillage (NT), no tillage and chiseling (NTc), no tillage and cross chiseling (NTcc), conventional tillage (CT), reduced tillage (RT) and conservation tillage (CsT) and four speeds, (4.6; 5.5; 7,3 and 7.8 km h -1 ) applied in the subplot at the time of soybean seeding. We observed in the deep layers 0.0 -0.10; 0.10 -0.20 and 0.20 -0.30 m significant effect of tillage systems on the PR of the soil. The NT system showed the highest value of PR compared to other management systems studied. In the NT should be used sowing speeds above 5.5 km h -¹ to decrease the compression. Low speeds favor higher yield by improving pods per plant. Speeds in the working range (5-7 km h -1 ) promote higher productivity by improving the number of pods per plant, and provide better stand.

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Section: Resultscontrasting

confidence: 87%

Section: Resultscontrasting

confidence: 85%

Penetration resistance and agronomic characteristics of soybean affected by soil management and sowing speed systems

et al. 2016

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“…Liu et al (2004) stated that using fast speeds can compromise the sowing quality. Jasper et al (2011) concluded that faster sowing speeds increased multiples and reduced the acceptable spacing that affected the longitudinal distribution of the seeds for two different seeddispensing systems (pneumatic and horizontal disk honeycomb) and five sowing speeds (1.11, 1.66, 2.22, 2.77 and 3.33 m s -1 ). Mion and Benez (2008) claim that furrow mechanisms are used to ensure seed and fertiliser deposition in the soil and to provide suitable conditions for germination and crop development.…”

Section: Introductionmentioning

confidence: 99%

Seeding quality and soybean yields from using different furrowers and operation speeds

et al. 2012

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The sowing process for annual no-till crops affects the physical soil conditions around the seeds by exposing them to adverse conditions that may limit initial plant development and reduce potential yield. The use of seed drills that are not compatible with field conditions and the use of inappropriate seed drill speeds affect sowing performance. Therefore, this study aims to evaluate the effect of different seed drill types and operating speeds on soybean quality parameters and yield components. Two furrow opener (double disc and chisel) and four operating speed (0.86; 1.22; 1.47 and 1.94 m s -1 ) treatments were used. The following variables were evaluated: mean number of days until emergence, plant distribution uniformity, sowing depth, area of the soil disturbed, crop stand and grain yield. Overall, the chisel furrow opener provided a greater sowing depth and increased the disturbed soil area more than the double disc furrow opener. Increased operating speeds reduced crop stands and yields and increased the disturbed soil area. Key words: No-tillage, sowing performance, no-tillage quality ResumoEm culturas anuais submetidas ao sistema plantio direto o processo de semeadura afeta o condicionamento físico do solo ao redor das sementes expondo as mesmas a condições adversas, podendo limitar o desenvolvimento inicial das plantas e minimizar o potencial produtivo. O uso de sulcadores não condizentes com a situação de campo e de velocidades inadequadas são fatores que afetam o bom desempenho da semeadura. Nesse contexto, este trabalho teve por objetivo, avaliar o efeito de diferentes sulcadores e velocidades de operação sobre parâmetros de qualidade de semeadura e componentes de produtividade da cultura da soja. Os tratamentos foram compostos pela combinação entre dois sulcadores (disco e haste) e quatro velocidades de operação (0,86; 1,22; 1,47 e 1,94 m s -1 ). Foram avaliados: o número médio de dias para a emergência, a uniformidade de distribuição de plantas, a profundidade de semeadura, a área de solo mobilizado, o estande de plantas e a produtividade de grãos. De acordo com os resultados, o sulcador tipo haste proporcionou maior profundidade de semeadura e área de solo mobilizada, quando comparado ao disco duplo defasado. O aumento da velocidade reduziu o estande de plantas e a produtividade da cultura e aumentou a área de solo mobilizada. Palavras-chave: Semeadura direta, desempenho de semeadura, plantio direto com qualidade

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“…In the precision sowing the feeder mechanism of the seeder has as function the regular dosage of the seeds within the seeding line, with pre-defined spacings (Jasper et al, 2011;Mao et al, 2015;Weirich Neto et al, 2012). Silva & Gamero (2010) state that speed is one of the main factors that interferes with the quality and operational performance during sowing.…”

Section: Introductionmentioning

confidence: 99%

Distribution of Maize Seed in a Seeding Line Prototype Using Microcontrolled Data Acquisition Systems

2017

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ABSTRACT:The aim of this study was evaluate the longitudinal distribution of maize seeds using a seeding line prototype, whit a microcontroller data acquisition system, at different speeds and types of horizontal feeder discs. Initially it was constructed a prototype simulator of seeding line, in the laboratory, and mounted two systems of microcontroller data acquisitions with infrared sensors for maize seeds counting. A test was conducted in a completely randomized design in split plots with factorial scheme of treatments 5 x 2 x 2, being the parcel two types of microcontroller data acquisition systems (infrared sensors in parallel and an diffuse infrared sensor), the factors were two feeder discs of maize seeds (inclined and normal) and five sowing speeds (3.0, 4.0, 5.0, 6.0, and 8.0 km h -1 ), with three replications, totaling 60 plots. The results showed that the data acquisition systems presented efficiency higher than 93% in the perception of the seeds. The lower speeds provided a seed distribution closer to the desired. The spacing average error between seed with the microcontroller data acquisition system with diffuse sensor was 0.0206 meters and the system with infrared sensors in parallel was 0.0158 meters.

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Velocidade de semeadura da soja

Cited by 44 publications

References 4 publications

Penetration resistance and agronomic characteristics of soybean affected by soil management and sowing speed systems

Penetration resistance and agronomic characteristics of soybean affected by soil management and sowing speed systems

Seeding quality and soybean yields from using different furrowers and operation speeds

Distribution of Maize Seed in a Seeding Line Prototype Using Microcontrolled Data Acquisition Systems

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