precision agriculture; soil strength; on line measurement; mapping
Abstract :
[en] Measurement of local soil strength may be used for real time regulation of tillage parameters in precision agriculture. Cartography of soil physical properties will also facilitate the study of their influence on plant development and yields. The aim of this research was to develop and test in field conditions a sensor measuring on-line soil strength variations. The sensor was constituted of a thin blade pulled in the soil at constant depth and speed and a beam which transferred the soil–blade forces to a transducer fixed on the machine. This transducer measured the draft force (Fx), the vertical force (Fz) and the moment (My). A field experiment was performed in 2 ha field of silt soil (Hesbaye, Belgium). A soil strength map of the field
was established by pulling the sensor at 5 m interline separation by a tractor equipped with a DGPS receiver. The relationship between the recorded forces and several soil physical parameters was studied by identifying 10 control plots on the sensor track. In each of them, cone index penetrometry profiles and soil water content were measured. Soil samples were taken in the centre of the plots to determine cohesion and internal friction angle, simple compression resistance, Atterberg limits, granulometry and pF curves. Triaxial tests identified over-consolidated soils in plots situated in the pounds of the field. Based on the parameters measured in the other plots, significant relationships were established between (1) a global penetrometry index and the Fx and My solicitations measured by the sensor; (2) gravimetric water content and the vertical force Fz. Interpolation by inverse distance with a range of 45 m gave the best result for the cartography of the three measured signals (Fx, Fz and My). The confrontation of those maps with pedological and topographic maps together with the statistical relationships and the farmer’s knowledge of the field showed high consistency. The results of this experiment in field conditions are encouraging and show the promising perspective of technological innovations allowing on-line characterisation of soil physical state for precision agriculture.
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Baeyens L. Carte des sols de la Belgique et texte explicatif de la planchette de Hannut 119 W, Centre de Cartographie des Sols, IRSIA; 1960.
Carter M.R. (1988) Penetration resistance to characterize the depth and persistance of soil loosening in tillage studies. Can. J. Soil Sci. 68:657-668.
Cook N.H., Rabinowicz E. Physical Measurement and Analysis , Addison-Wesley, New York; 1963, 1963.
Frogbrook Z.L. (1999) The effect of sampling intensity on the reliability of predictions and maps of soils properties. Proceedings of the Second European Conference on Precision Agriculture , John, V. (Ed.), Stafford, Odense, Denmark; 71-80.
Godwin R.J. (1975) An extended octagonal ring transducer for use in tillage studies. J. Agric. Eng. Res. 20:347-352.
Jorajuria D., Draghi L., Aragon A. (1997) The effect of vehicle weight on the distribution of compaction with depth and the yield of Lolium/Trifolium grassland. Soil Till. Res. 41:1-12.
Martino D., Shaykewich C.F. (1994) Root penetration profiles of wheat and barley as affected by soil penetration resistance in field conditions. Can. J. Soil Sci. 74(2):193-200.
Perfect E. (1990) Spatial variability of soil penetrometer measurements at the mesoscopic scale. Soil Till. Res. 16:257-271.
Reece A.R. (1965) The fundamental equation of earthmoving mechanics. Proceedings of the Symposium of Earthmoving Machinery , Institute of Mechanical Engineers, London; 179(PART 3F).
Upadhyaya S.K. Advances in Soil Dynamics, Vol. 1. ASAE Monograph No. 12 , American Society of Agricultural Engineers, St. Joseph, Michigan, USA; 1994, 1.
Varsa E.C., Chong S.K., Abolaji J.O., Farquhar D.A., Olsen F.J. (1997) Effect of deep tillage on soil physical characteristics and corn (Zea mays L.) root growth and production. Soil Till. Res. 43:219-228.
Similar publications
Sorry the service is unavailable at the moment. Please try again later.
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.