Design of a Soil Cutting Resistance Sensor for Application in Site-Specific Tillage
Autor
Agüera Vega, Juan
Carballido del Rey, Jacob
Gil Ribes, Jesús
Gliever, Chris J.
Pérez Ruiz, Manuel
Editor
MDPIFecha
2013Materia
Soil cutting resistance mapSite-specific management
Soil sensor
GNSS
METS:
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One objective of precision agriculture is to provide accurate information about
soil and crop properties to optimize the management of agricultural inputs to meet
site-specific needs. This paper describes the development of a sensor equipped with
RTK-GPS technology that continuously and efficiently measures soil cutting resistance at
various depths while traversing the field. Laboratory and preliminary field tests verified the
accuracy of this prototype soil strength sensor. The data obtained using a hand-operated
soil cone penetrometer was used to evaluate this field soil compaction depth profile sensor.
To date, this sensor has only been tested in one field under one gravimetric water content
condition. This field test revealed that the relationships between the soil strength profile
sensor (SSPS) cutting force and soil cone index values are assumed to be quadratic for the
various depths considered: 0–10, 10–20 and 20–30 cm (r2 = 0.58, 0.45 and 0.54,
respectively). Soil resistance contour maps illustrated its practical value. The developed
sensor provides accurate, timely and affordable information on soil properties to optimize
resources and improve agricultural economy.