An instrumented chisel for the study of soil-tillage dynamics

Glancey, James L.; Upadhyaya, Shrinivasa K.; Chancellor, W. J.; Rumsey, James W.

doi:10.1016/0167-1987(89)90017-2

Cited by 42 publications

(16 citation statements)

References 5 publications

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“…According to Glancey et al (1989), the soil breaking process is fairly complex, with two to three dominant frequencies. They are dependent on the condition of the soil, the depth and speed of operation.…”

Section: Resultsmentioning

confidence: 99%

Penetration resistance according to penetration rate, cone base size and different soil conditions

et al. 2014

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This study aimed to evaluate the effect of penetration rate and the size of the cone base on the resistance to penetration under different soil moistures and soil bulk density. The experimental design was completely randomized in a 4x2x2x2 factorial arrangement, with the factors, soil bulk density of 1.0; 1.2; 1.4 and 1.6 Mg m , penetration rates of 0.166 and 30 mm s -1 and areas of the cone base of 10.98 and 129.28 mm 2 resulting in 32 treatments with 8 replicates. To ensure greater uniformity and similarity to field conditions, samples passed through cycles of wetting and drying. Only the interaction of the four factors was not significant. Resistance values varied with the density of the soil, regardless of moisture and penetration rate. Soil penetration resistance was influenced by the size of the cone base, with higher values for the smallest base independent of moisture and soil bulk density. The relationship between resistance to penetration and moisture is not always linear, once it is influenced by soil bulk density. Reduction in the area of the cone leads to an increase in the soil resistance to penetration.Key words: soil bulk density, soil moisture, methodology.Resistência do solo à penetração em função da velocidade de penetração, tamanho da base do cone e diferentes condições do solo , resultando em 32 tratamentos com oito repetições. Visando dar maior uniformidade e maior semelhança às condições de campo, as amostras passaram por ciclos de umedecimento e secagem. Apenas a interação dos quatro fatores não foi significativa. Os valores de resistência variaram com a densidade do solo, independentemente da umidade e da velocidade de penetração. A resistência do solo à penetração foi influenciada pelo tamanho da base do cone, com a menor base apresentando os maiores valores, independentemente da umidade e da densidade do solo. A relação entre resistência do solo à penetração e umidade nem sempre é linear, pois é influenciada pelo valor da densidade do solo. A diminuição do tamanho da base do cone provoca incremento no valor da resistência do solo à penetração.Palavras-chave: densidade do solo, umidade do solo, metodologia.

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Section: Resultsmentioning

confidence: 99%

Penetration resistance according to penetration rate, cone base size and different soil conditions

et al. 2014

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“…A shank instrumented with an array of strain gauges, such as that developed by Glancey et al (1989), can be used to measure the soil cutting force profile, and to locate hard pans. Although the design used by these investigators located the hard pan and estimated the force profile, there were some concerns related to sensitivity and drift of the gauges.…”

Section: Mechanical Sensorsmentioning

confidence: 99%

On-the-go soil sensors for precision agriculture

Adamchuk

Hummel

Morgan

et al. 2004

Computers and Electronics in Agriculture

632

256

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The basic objectives of site-specific management of agricultural inputs are to increase profitability of crop production, improve product quality, and protect the environment. Information about the variability of different soil attributes within a field is essential for the decision-making process. The inability to obtain soil characteristics rapidly and inexpensively remains one of the biggest limitations of precision agriculture. Numerous researchers and manufacturers have attempted to develop on-the-go soil sensors to measure mechanical, physical and chemical soil properties. The sensors have been based on electrical and electromagnetic, optical and radiometric, mechanical, acoustic, pneumatic, and electrochemical measurement concepts. While only electric and electromagnetic sensors are widely used at this time, other technologies presented in this review may also be suitable to improve the quality of soil-related information in the near future.

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“…Some suggest that the phenomenon is a periodic motion caused by the shape-plane dynamics. However, Glancey et al 5 reported that there are significant variations in the periods and amplitudes of individual cycles, even in well-controlled soil bin conditions. In other words, the motion should be recognized as a pseudo-periodic motion consisting of inter and intra dynamics.…”

Section: Introductionmentioning

confidence: 99%

“…[2][3][4] The fast Fourier transform of the tillage data has shown the presence of a clear peak in the frequency domain. [5][6][7] These phenomena are often observed by farm operators engaged in tillage. Some suggest that the phenomenon is a periodic motion caused by the shape-plane dynamics.…”

Section: Introductionmentioning

confidence: 99%

Chaos emerging in soil failure patterns observed during tillage: Normalized deterministic nonlinear prediction (NDNP) and its application

Sakai

Upadhyaya

Andrade-Sánchez

et al. 2017

Chaos: An Interdisciplinary Journal of Nonlinear Science

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Real-world processes are often combinations of deterministic and stochastic processes. Soil failure observed during farm tillage is one example of this phenomenon. In this paper, we investigated the nonlinear features of soil failure patterns in a farm tillage process. We demonstrate emerging determinism in soil failure patterns from stochastic processes under specific soil conditions. We normalized the deterministic nonlinear prediction considering autocorrelation and propose it as a robust way of extracting a nonlinear dynamical system from noise contaminated motion. Soil is a typical granular material. The results obtained here are expected to be applicable to granular materials in general. From a global scale to nano scale, the granular material is featured in seismology, geotechnology, soil mechanics, and particle technology. The results and discussions presented here are applicable in these wide research areas. The proposed method and our findings are useful with respect to the application of nonlinear dynamics to investigate complex motions generated from granular materials.

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An instrumented chisel for the study of soil-tillage dynamics

Cited by 42 publications

References 5 publications

Penetration resistance according to penetration rate, cone base size and different soil conditions

Penetration resistance according to penetration rate, cone base size and different soil conditions

On-the-go soil sensors for precision agriculture

Chaos emerging in soil failure patterns observed during tillage: Normalized deterministic nonlinear prediction (NDNP) and its application

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