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Related Concept Videos

Resistivity01:22

Resistivity

When a voltage is applied to a conductor, an electrical field is generated, and charges in the conductor feel the force due to the electrical field. The current density that results depends on the electrical field and the properties of the material. In some materials, including metals at a given temperature, the current density is approximately proportional to the electrical field. In these cases, the current density can be modeled as:
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Related Experiment Video

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Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors
08:49

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Using an automatic resistivity profiler soil sensor on-the-go in precision viticulture.

Roberta Rossi1, Alessio Pollice, Maria-Paz Diago

  • 1Sistemi Colturali degli Ambienti Caldo-Aridi, Agricultural Research Council (CRA), Via Celso Ulpiani, 5, 70125 Bari, Italy. roberta.rossi@entecra.it

Sensors (Basel, Switzerland)
|January 18, 2013
PubMed
Summary

Precision viticulture uses soil electrical resistivity (ER) and topography to map vineyard variability. This study successfully linked ER patterns to grapevine growth and yield, enabling targeted vineyard management.

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Area of Science:

  • Agricultural Science
  • Soil Science
  • Viticulture

Background:

  • Precision viticulture requires detailed spatial information on vineyard soil properties for optimized management.
  • Understanding soil variability is crucial for improving grapevine vegetative growth and yield.

Purpose of the Study:

  • To integrate high-resolution soil electrical resistivity (ER) data with topographic attributes.
  • To assess the spatial variability patterns of vegetative growth and yield in a commercial vineyard.
  • To delineate uniform management units within the vineyard based on soil and terrain characteristics.

Main Methods:

  • Continuous geoelectrical mapping using an Automatic Resistivity Profiler (ARP) with GPS.
  • Measurement of ER at depths up to 0.5, 1, and 2 meters.
  • Integration of ER data, topographic attributes (elevation, slope), and grapevine variables (trunk circumference, yield) using regression and cluster analysis.

Main Results:

  • Soil electrical resistivity (ER) exhibited structured spatial variability.
  • ER patterns showed a strong correlation with trunk circumference spatial patterns and vineyard yield.
  • Uniform management units were successfully delineated using resistivity and terrain attributes.

Conclusions:

  • The integration of continuous soil resistivity mapping with point measurements is a valuable technique for precision viticulture.
  • This approach effectively identifies within-plot areas of vineyards with similar soil status and grapevine performance.
  • Spatial information on soil properties, particularly ER, aids in understanding and managing vineyard variability for improved crop outcomes.