Potential use of the veris apparent EC sensor to predict soil texture under the semi-arid conditions of central Arizona

Guilherme Oguri, Pedro Andrade-Sanchez, John T. Heun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The operational details of the apparent electrical conductivity (ECa) sensor manufactured by Veris Technologies have been extensively documented in literature reports, but the geographical distribution of these research studies indicate a strong regional concentration in the US Mid-west and Southern states. The agricultural lands of these states diverge significantly to the soil conditions and water regime of irrigated land in the US South-western states such as Arizona where there is no previous research reports of the use of this particular sensor. The objectives of the present study were to analyze the performance of this sensor under the conditions of typical soils in irrigated farms of Central Arizona. We tested under static conditions the performance of the sensor on three soils of contrasting texture. Observations were collected as time series data as soil moisture changed from saturation to permanent wilting point. Observations were repeated at the hours of lowest and highest temperatures. In addition, this study included soil penetration resistance and salinity determinations. Preliminary results indicate that soil temperature of the upper layer caused the most dynamic change in the sensor output. The ECa curves of the three soil textures tested had well defined distinctive characteristics. Final multivariate analysis is pending.

Original languageEnglish (US)
Title of host publicationAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009
Pages4034-4041
Number of pages8
StatePublished - Dec 1 2009
EventAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009 - Reno, NV, United States
Duration: Jun 21 2009Jun 24 2009

Publication series

NameAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009
Volume6

Other

OtherAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009
CountryUnited States
CityReno, NV
Period6/21/096/24/09

Keywords

  • Precision agriculture
  • Soil electrical conductivity
  • Soil salinity
  • Soil texture

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

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    Oguri, G., Andrade-Sanchez, P., & Heun, J. T. (2009). Potential use of the veris apparent EC sensor to predict soil texture under the semi-arid conditions of central Arizona. In American Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009 (pp. 4034-4041). (American Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009; Vol. 6).