Distribuição de sementes de milho e soja em função da velocidade e densidade de semeadura

Dias, Vilnei de Oliveira; Alonço, Airton dos Santos; Baumhardt, Ulisses Benedetti; Bonotto, Gustavo José

doi:10.1590/s0103-84782009005000105

Cited by 42 publications

(41 citation statements)

References 11 publications

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“…The seeding quality is highly dependent on the metering accuracy performed by the seed metering mechanism, which, according to Dias et al (2009), is the most important part of the seeder.…”

Section: Introductionmentioning

confidence: 99%

Effect of different conductor tubes on the longitudinal distribution of corn seeds

Carpes

Alonço

Rossato

et al. 2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe correct longitudinal distribution of seeds by the seeder machine is one of the features that most contributes to obtain an adequate plant stand and good crop yield. The objective of this study was to evaluate the longitudinal distribution of corn seeds by seed conductor tube types, combined with a horizontal perforated disc and a pneumatic meter, altering the seeding density rate. The experiment was conducted in a laboratory using a seed meter test bench. Treatments were a combination of two seed meters, six conductor tubes and four peripheral speeds for the meter disc, corresponding to densities of 60, 70, 80 and 90 thousand corn seeds per hectare and were organized in a three-factor scheme with four repetitions. By increasing the seeding rate into the same ground speed, there was a reduction in the percentage of acceptable spacing, this effect being more pronounced when conductor tubes with a small diameter and straight profile were used.

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“…The seeding quality is highly dependent on the metering accuracy performed by the seed metering mechanism, which, according to Dias et al (2009), is the most important part of the seeder.…”

Section: Introductionmentioning

confidence: 99%

Effect of different conductor tubes on the longitudinal distribution of corn seeds

Carpes

Alonço

Rossato

et al. 2017

Rev. bras. eng. agríc. ambient.

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“…However, the obtained results differ from those of Mercante et al (2005), who observed that seed distribution uniformity was not significantly affected by the change in velocity. On the other hand, Dias et al (2009) and Liu et al (2010) found similar results, in which the velocity influenced seed distribution.…”

Section: Resultsmentioning

confidence: 62%

Performance of a seeder according to the displacement velocity and furrowing mechanism for fertilizer deposition

Santos

Lima

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TAgribusiness daily increases the demand for machinery with better efficiency, seeking to reduce operating costs and improve the quality of the sowing process. The objective of present study was to evaluate the quality of the longitudinal seed distribution and the operating performance of a seeder-fertilizer according to displacement velocity and furrowing mechanism for fertilizer deposition. The assay was conducted in the experimental area of the Department of Agricultural Engineering of the Federal University of Ceará. The experimental design was randomized blocks, in a 2 x 3 factorial, with four replicates with two furrowing mechanisms for fertilizer deposition (double disc and shank) and three displacement velocities (4.7, 6.3 and 8.2 km h -1 ). The results demonstrate that for the quality of seed distribution, the best performance was obtained with the use of the shank at velocity of 6.3 km h -1 . The tractor-seeder set provided better operating performance using the disc, which promoted the lowest specific consumption at the velocity of 4.7 km h -1 .Desempenho de semeadora-adubadora em função da velocidade de deslocamento e do mecanismo sulcador de fertilizantes R E S U M O Diariamente, o agronegócio aumenta a exigência por maquinário com melhor eficiência buscando a redução dos custos operacionais e a melhoria da qualidade do processo de semeadura. O objetivo do trabalho foi avaliar a qualidade da distribuição longitudinal de sementes e o desempenho operacional de uma semeadora-adubadora em função da velocidade de deslocamento e do mecanismo sulcador de fertilizantes. O trabalho foi realizado na área experimental do Departamento de Engenharia Agrícola da Universidade Federal do Ceará. O delineamento experimental foi em blocos casualizados, em esquema fatorial 2 x 3 com 4 repetições e dois mecanismos para depósito de fertilizantes (disco duplo desencontrado e haste sulcadora) além de três velocidades de deslocamento (4,7; 6,3 e 8,2 km h -1 ). Os resultados demonstram que para qualidade da distribuição de sementes o melhor desempenho foi com o uso da haste sulcadora na velocidade de 6,3 km h -1 . O conjunto trator-semeadora obteve melhor desempenho operacional com o uso do disco obtendo menor consumo específico na velocidade de 4,7 km h -1 .

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“…The sowing density per meter directly affects seed distribution and plant density (Dias et al 2009), because, to maintain the same population density per area, when spacing is greater (e.g. 0.90 m), a larger number of plants should be planted per row.…”

Section: Resultsmentioning

confidence: 99%

Maize intercropped with Urochloa ruziziensis under no-tillage system

Queiroz

Chioderoli

Furlani

et al. 2016

Pesqui. Agropecu. Trop.

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The no-tillage system is a conservation practice that seeks greater sustainability of the production system and can be replicated in large land areas. Maize intercropped with forages of the Urochloa genus has proven to be profitable and suitable for targeting both the straw and grain production. This study aimed at evaluating maize yield and cover plants, using different maize row spacings and forage seeding methods, under a no-tillage system. A randomized blocks design, in a 2 x 3 + 2 factorial scheme, with four replications, was used. The treatments consisted of two maize row spacings (0.45 m and 0.90 m) intercropped with Urochloa ruziziensis, using three different methods (Urochloa sown in the row, Urochloa sown by hauling soon after maize was sown and Urochloa sown during the maize V4 growth stage) + controls (only maize at two spacings). The intercropping between maize spaced 0.90 m with Urochloa ruziziensis in the sowing row provided better grain yield results without interfering with the Urochloa dry matter production.

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Distribuição de sementes de milho e soja em função da velocidade e densidade de semeadura

Cited by 42 publications

References 11 publications

Effect of different conductor tubes on the longitudinal distribution of corn seeds

Effect of different conductor tubes on the longitudinal distribution of corn seeds

Performance of a seeder according to the displacement velocity and furrowing mechanism for fertilizer deposition

Maize intercropped with Urochloa ruziziensis under no-tillage system

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