Research on Straw Returning and Fertilization Seeder

Lu, Xianbo; Chen, Shu Fa; Yang, Jin Chao

doi:10.4028/www.scientific.net/amm.556-562.1450

Cited by 2 publications

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“…Weirich Neto et al (2013) studied fertilizer positioning at sowing, Lu et al (2014) worked on a planter project, and Grant et al (2016) assessed the influence of fertilizer sources on the crop installation. However, these authors did not find in the literature scientific studies examining the horizontal toothed rotor performance of planters as a function of longitudinal inclination to the metering mechanism.…”

Section: Introductionmentioning

confidence: 99%

Performance of Fertilizer Metering Mechanisms of Planters as a Function of Longitudinal Inclination

et al. 2017

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Sowing occurs in agricultural areas with irregular relief, influencing the quality of seed and fertilizer distribution. The aim of this study was to analyze the performance of different fertilizer metering mechanisms of planters as a function of longitudinal inclination. The experimental design was a completely randomized design with five treatments and six replications. Treatments consisted of five longitudinal inclinations to the metering mechanism (−10, −5, 0, 5, and 10 degrees). The mass of fertilizer collected per minute was considered as a replication. We worked with two types of fertilizers: a mixture of granules and powder. Metering mechanisms used were a horizontal toothed rotor, helical without flow restrictor, helical with lateral overflow, and helical with longitudinal overflow. The longitudinal inclination of ±10° in relation to the leveling altered the metered amount of both fertilizers used in all metering mechanisms. The helical with lateral overflow was the metering mechanism that obtained the smallest amount variation of fertilizer distributed in the different longitudinal inclinations, followed by the helical with longitudinal overflow, horizontal toothed rotor, and helical without flow restrictor.

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Section: Introductionmentioning

confidence: 99%

Performance of Fertilizer Metering Mechanisms of Planters as a Function of Longitudinal Inclination

et al. 2017

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“…Consequently, the material would be released pocket by pocket, which, by definition, is a discontinuous batch flow or a surging flow. Thus, the fertilizer flow is more or less uneven when using this type of metering mechanism [3] . However, this unevenness can be minimized through optimizing the machine parameters.…”

Section: Introductionmentioning

confidence: 99%

Parameter optimization of fluted-roller meter using discrete element method

Huang

Wang

Yao

et al. 2018

International Journal of Agricultural and Biological Engineering

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The most important performance indicator of a fertilizer metering mechanism is the evenness of fertilizer flow. In this study, a regression mathematical model between the key operating parameters of the fluted roller meter and the flow evenness was developed to simulate a fluted-roller meter for metering diammonium phosphate fertilizer using the discrete element method (DEM). The model was verified by bench test using the same equipment and parameters as the DEM model. Selected working parameters of the fluted-roller meter, including roll length (L), roll rotational speed (n), and flap angle (α) (for fertilizer discharge control), were optimized to maximize the flow evenness. Flow evenness was assessed by the coefficient of variation (CV) of the discharging mass during the operation. The simulation and experiment results showed the similar trends, in terms of effects of machine parameters on the CV. The relative errors ranged from 0.2% to 34.6% with a mean of 10.5%. This demonstrated that the DEM model was feasible to simulate the metering process of the fluted-roller meter. The machine parameters that significantly affected the values of CV in descending order were α, L and n. Both simulation and measurement results revealed that the optimal machine parameters, represented by the minimum value of CV, were observed at L = 45 mm, n = 55 r/min and α = 22.5°. This combination of parameters returned CV values of 10.89% and 9.55% for simulations and measurements, respectively. The study provided useful information for guiding the design and selection of machine parameters for metering devices for fertilizer applications.

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Research on Straw Returning and Fertilization Seeder

Cited by 2 publications

References 0 publications

Performance of Fertilizer Metering Mechanisms of Planters as a Function of Longitudinal Inclination

Performance of Fertilizer Metering Mechanisms of Planters as a Function of Longitudinal Inclination

Parameter optimization of fluted-roller meter using discrete element method

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