Soil translocation by narrow openers with various rake angles

Solhjou, Aliakbar; Fielke, John M.; Desbiolles, J.

doi:10.1016/j.biosystemseng.2012.02.006

Cited by 46 publications

(15 citation statements)

References 12 publications

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“…As was observed, the simulation model can be utilized as a tool to examine the induced changes in the soil profile and prediction of the furrow formed after the passage of the subsoiler. The formed profiles' shapes were trapezoidal as observed by 17 , 31 , 32 .…”

Section: Discussionmentioning

confidence: 63%

Prediction of precise subsoiling based on analytical method, discrete element simulation and experimental data from soil bin

Makange

Changying

Nyalala

et al. 2021

Sci Rep

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Prediction of a precise subsoiling using an analytical model (AM) and Discrete Element Method (DEM) was conducted to explain cutting forces and the soil profile induced changes by a subsoiler. Although sensors, AMs and DEM exist, there are still cases of soil structure deformation during deep tillage. Therefore, this study aimed to provide a clear understanding of the deep tillage using prediction models. Experimental data obtained in the soil bin trolley with force sensors were used for verification of the models. Experiments were designed using Taguchi method. In the AM, the modified-McKyes and Willat and Willis equations were used to determine cutting forces and soil furrow profile respectively. Calculations were done using MATLAB software. The elastoplastic behavior of soil was incorporated into the DEM. The DEM predicted results with the best regression of 0.984 $$R^{2}$$ R 2 at a $$NRMSE$$ NRMSE of 1.936 while the AM had the lowest $$R^{2}$$ R 2 of 0.957, at a $$NRMSE$$ NRMSE of 6.008. All regression results were obtained at p < 0.05. The ANOVA test showed that the p-values for the horizontal and vertical forces were 0.9396 and 0.9696, respectively. The DEM predicted better than the AM. DEM is easy to use and is effective in developing models for precision subsoiling.

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Section: Discussionmentioning

confidence: 63%

Prediction of precise subsoiling based on analytical method, discrete element simulation and experimental data from soil bin

Makange

Changying

Nyalala

et al. 2021

Sci Rep

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“…The magnitude of the standard deviation provides an insight into the variation of the furrow geometry. By evaluating the 3D scans, the three-dimensional soil displacement become available in the assessment of tillage tools [52]. The pinboard has previously been applied for comparing results of simulations-based and measured soil-tool interactions [48].…”

Section: Resultsmentioning

confidence: 99%

LiDAR-Based 3D Scans of Soil Surfaces and Furrows in Two Soil Types

Foldager

Pedersen

Skov

et al. 2019

Sensors

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Soil surface measurements play an important role in the performance assessment of tillage operations and are relevant in both academic and industrial settings. Manual soil surface measurements are time-consuming and laborious, which often limits the amount of data collected. An experiment was conducted to compare two approaches for measuring and analysing the cross-sectional area and geometry of a furrow after a trailing shoe sweep. The compared approaches in this study were a manual pinboard and a Light Detection and Ranging (LiDAR) sensor. The experiments were conducted in coarse sand and loamy sand soil bins exposed to three levels of irrigation. Using the LiDAR, a system for generating 3D scans of the soil surface was obtained and a mean furrow geometry was introduced to study the geometrical variations along the furrows. A comparison of the cross-sectional area measurements by the pinboard and the LiDAR showed up to 41% difference between the two methods. The relation between irrigation and the resulting furrow area of a trailing shoe sweep was investigated using the LiDAR measurements. The furrow cross-sectional area increased by 11% and 34% under 20 mm and 40 mm irrigation compared to non-irrigated in the coarse sand experiment. In the loamy sand, the cross-sectional area increased by 17% and 15% by irrigation of 20 mm and 40 mm compared to non-irrigated measured using the LiDAR.

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“…Experiments were undertaken in remolded soil bin conditions using the seed placement test rig at the University of South Australia (UniSA) 7 . Three variations to opener design were evaluated.…”

Section: Methodsmentioning

confidence: 99%

Lateral translocation of surface soil by various no-till narrow point openers

Solhjou¹,

Fielke

Desbiolles

2012

Agrociencia

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Australian no-till farming often uses narrow point openers to open the soil and place seed and fertilizer in a furrow. They are generally used in conjunction with spraying of herbicides for weed control and press-wheels to pack soil over seeds. These openers when operating at speeds beyond 8 km/h can create excessive soil throw which creates problems of increased weed burden and reduced seeding quality, which can also enhance crop establishment risks due to herbicide damage and soil moisture loss. This work uses the results of surface PVC tracer displacement to estimate the likely movement of soil applied pre-emergent herbicide, typically incorporated during the no-till seeding operation, and evaluate the effects of furrow opener geometry. Three variations to opener design were evaluated; four rake angles of 35, 53, 72 and 90°, three leading edge conditions of blunt, chamfered one side and chamfered both sides, and a range of fi ve bent leg openers. The effect of the various narrow opener geometries on soil movement and furrow profi le were evaluated in a soil bin with a sandy loam soil and at a forward speed of 8.2 km/h and a depth of 120 mm. Results showed that the openers with various rake angles all threw surface soil at least 300 mm from the center and this would land in an adjacent furrow when used at typical row spacings. A low rake angle of 35° had the least lateral surface soil movement and the 53° rake angle gave the widest band of soil, along the tool path, that was cleared of surface tracers. Adding a chamfer to the leading edge reduced lateral soil movement when compared to a blunt opener. The bent leg opener achieved much lower soil movement while loosening a furrow, and when combined with a single sided chamfer was able to virtually eliminate throwing of soil out of the furrow and hence would have no effect on adjacent furrows. The concept of bent leg furrow openers has the potential to change the dynamics of soil disturbance when no-till seeding with tine openers.

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Soil translocation by narrow openers with various rake angles

Cited by 46 publications

References 12 publications

Prediction of precise subsoiling based on analytical method, discrete element simulation and experimental data from soil bin

Prediction of precise subsoiling based on analytical method, discrete element simulation and experimental data from soil bin

LiDAR-Based 3D Scans of Soil Surfaces and Furrows in Two Soil Types

Lateral translocation of surface soil by various no-till narrow point openers

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