Análise tridimensional de esforços em elementos rompedores de semeadoras de plantio direto

Mion, Renildo Luiz; Benez, Sérgio Hugo; Viliotti, Carlos Alberto; Moreira, João Batista; Salvador, Nilson

doi:10.1590/s0103-84782009005000067

Cited by 10 publications

(12 citation statements)

References 6 publications

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“…The double-disc showed a shallower working depth, as reported by Palma et al (2010) considering that they are bigger, and it is more difficult for them to penetrate the soil, as stressed by Seidi (2012). Similar results were also found by Koakoski et al (2007) and Mion et al (2009); according to the authors, such results are related to the fact that the hoe furrow opener reaches a greater depth due to the action of the tip, which causes a downward vector that tends to suck down the tip of the hoe.…”

Section: Maximum Furrow Depthsupporting

confidence: 81%

“…Mion et al (2009) corroborated this statement, since they found significant differences in soil disturbance by these mechanisms, with 0.0015 m² values for 3 Disturbance of Ultisol soil based on interactions between furrow openers and coulters between the rotary planes of the discs, and 70 mm height for the point of contact. By adjusting the tool holder, the working depth was 0.12 m for the hoe opener and 0.07 m for the double-discs.…”

Section: Methodsmentioning

confidence: 57%

“…The use of smooth coulters reduced soil disturbance by 12.26% when compared with the offset fluted; there was no difference from the treatment without coulters. Mion et al (2009) and Silva et al (2012), while working with different coulters, also found statistical differences between soil disturbance caused by different types of coulters, and the offset fluted coulters also caused more disturbance than the smooth discs.…”

Section: Maximum Furrow Depthmentioning

confidence: 89%

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Disturbance of Ultisol soil based on interactions between furrow openers and coulters for the no-tillage system

et al. 2016

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The present study evaluated the effect of different associations between coulters and fertilizer furrow openers on soil disturbance, furrow depth and width, according to forward speed. The study was conducted on a farm in Santa Maria (Brazil/RS), in soil classified as sandy loam Ultisol. The experiment consisted of 24 combinations of treatments with three replications in a 2×3×4 factorial experiment. The combinations were formed by the interaction of the factors including: two types of furrow openers (hoe and double-disc), three types of coulters (no-coulter, smooth and offset fluted) and four levels of forward speed (1.11, 1.67, 2.22 and 2.78 m/s). Soil elevation and soil disturbance area profiles were obtained with the use of a micro profilometer, and disturbance values were calculated with the aid of computer software program Auto Cad. The disturbance area was not affected by speed; it was greater when using the hoe opener, and in association with the offset fluted coulter. Speed was inversely proportional to the depth of the furrows made by the hoe opener. Furthermore, the hoe caused the greatest furrow width (0.26 m) in comparison with the double-disc (0.24 m). The use of different coulters associated with furrow openers increased this variable (0.23 m for the no-coulter condition, 0.25 m with smooth and 0.26 m with offset fluted). The use of coulters combined with furrow openers reduces soil swelling, in approximately 8% for the smooth and 20% for the offset fluted.

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Section: Maximum Furrow Depthsupporting

confidence: 81%

Section: Methodsmentioning

confidence: 57%

Section: Maximum Furrow Depthmentioning

confidence: 89%

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Disturbance of Ultisol soil based on interactions between furrow openers and coulters for the no-tillage system

et al. 2016

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“…According to these authors, these results may be due to the fact that there is no additional load on the equipment to increase its penetration in the soil. In this regard, Mion and Benez (2008), evaluating the efforts of five furrow opening mechanisms (even discs, corrugated discs, undulated discs, double discs, and shanks) with variation in vertical load, found that the shank promotes greater soil mobilization with less horizontal effort, reaching higher work depths because only the tip of the shank promotes resistance.…”

Section: Discussionmentioning

confidence: 99%

“…As for the discs, according to the Mion and Benez (2008), more power is needed for them to penetrate, cut through soil and straw, and overcome rolling resistance and friction on the sides of the discs. These authors found that the wave disc showed the greatest lateral force values in relation to other mechanisms for vertical loads of 1500, 2250, and 3000 N. Considering the average of all vertical loads in absolute numbers, the soil area mobilized by the corrugated disc was second only to the shank.…”

Section: Discussionmentioning

confidence: 99%

Soybean Tillage Systems and Physical Changes in Surface Layers of Two Albaqualf Soils

Sartori

Marchesan

David

et al. 2016

Rev. Bras. Ciênc. Solo

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ABSTRACT:A compacted subsurface soil layer can be a limiting factor for soybean growing, reducing soybean yield. The aim of this study was to evaluate the effect of different tillage systems on the physical properties of two Albaqualf soils of the Central Plains region in the state of Rio Grande do Sul in southern Brazil. Two experiments were conducted: one in Santa Maria, RS, during the 2013/14 and 2014/15 crop seasons, and another in Formigueiro, RS, during the 2013/14 crop season. A randomized block experimental design with four replications was used. The treatments were: sowing using an offset double disc (T1); sowing using a fluted coulter disc (wavy disc with 12 waves) (T2); sowing with a knife runner opener (T3); sowing with a knife runner opener + press wheel mechanism for ground levelling (T4); sowing using a furrow opener upon a raised bed (T5); and chisel plough + sowing using an offset double-disc (T6). In the 2014/15 growing season, the T4 factor was changed using a knife runner opener 0.05 m from the planting row. A smaller reduction in the compacted subsurface soil layer was observed for both T1 and T2, which exhibited high soil bulk density values for the 2013/14 and 2014/15 crop seasons. Furthermore, T3, T5 and T6 led to a reduction in bulk density, and increasing total porosity and macroporosity in the soil, which consequently increased water infiltration, water storage capacity, and crop yield in areas with the presence of a compacted subsurface soil layer.

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Simulation analysis of root cutting process of corrugated cutter head

Jiang¹,

Cen²,

Li³

et al. 2022

International Symposium on Robotics, Artificial Intelligence, and Information Engineering (RAIIE 2022)

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Corrugated cutter head is the key component of grassland root cutting machine, which directly affects the operation performance of root cutting machine and the improvement effect of degraded grassland. EDEM was used to establish the discrete element simulation model of soil cutting root of corrugated cutter head. The soil disturbance, root cutting resistance and stress-strain characteristics of corrugated cutter head during root cutting process were analyzed. The simulation results show that the root cutting performance of corrugated cutter head meets the requirements of grassland improvement agriculture, and the corrugated cutter head meets the mechanical requirements of strength and stiffness. The research results can provide reference for the design of adaptability, reliability and durability of corrugated cutter head.

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Análise tridimensional de esforços em elementos rompedores de semeadoras de plantio direto

Cited by 10 publications

References 6 publications

Disturbance of Ultisol soil based on interactions between furrow openers and coulters for the no-tillage system

Disturbance of Ultisol soil based on interactions between furrow openers and coulters for the no-tillage system

Soybean Tillage Systems and Physical Changes in Surface Layers of Two Albaqualf Soils

Simulation analysis of root cutting process of corrugated cutter head

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