Monitoring spatial variation of soil moisture in crop fields with EM38
Paper
Paper/Presentation Title | Monitoring spatial variation of soil moisture in crop fields with EM38 |
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Presentation Type | Paper |
Authors | Padhi, Jyotiprakash (Author) and Misra, R. K. (Author) |
Journal or Proceedings Title | Irrigation Australia 2009: Irrigation Australia Irrigation and Drainage Conference: Proceedings |
Number of Pages | 15 |
Year | 2009 |
Place of Publication | Sydney, Australia |
Web Address (URL) of Paper | http://www.irrigation.org.au/index.cfm?/resources/irrigation-and-drainage-conference-2009-papers |
Conference/Event | Irrigation Australia 2009: Irrigation Australia Irrigation and Drainage Conference: Irrigation Today - Meeting the Challenge |
Event Details | Irrigation Australia 2009: Irrigation Australia Irrigation and Drainage Conference: Irrigation Today - Meeting the Challenge Event Date 18 to end of 21 Oct 2009 Event Location Swan Hill, Australia |
Abstract | Electromagnetic induction (EMI) technique is currently available as a commercial equipment to measure apparent electrical conductivity (ECa) of soils as a non-contact method by using EM38. A Field experiment with wheat was conducted to investigate the effects of variation in soil water and temperature (i.e. soil and air) on the EM38-measured ECa in vertical and horizontal modes of operation. Additional measurements were made to study the effects of placing EM38 at various heights above the ground (0.1 and 0.4 m) on ECa. We used an EM38 and a neutron probe to measure ECa and profile soil water content, respectively within top 1.33 m of soil in 3 replicated plots of 4 irrigation treatments. Irrigation treatments (T50-T85) were designed to allow soil water depletion down to 50%, 60%, 70% and 85% of the plant available water capacity in soil. During EM38 survey, we also recorded the locations of all measurements with a hand held GPS. Air temperature and soil temperature at 5, 10 and 25 cm depths was recorded for all the 12 plots during EM38 survey. |
Keywords | soil water; irrigation; crops; spatial variation |
ANZSRC Field of Research 2020 | 300206. Agricultural spatial analysis and modelling |
410699. Soil sciences not elsewhere classified | |
300201. Agricultural hydrology | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | National Centre for Engineering in Agriculture |
Australian Centre for Sustainable Catchments |
https://research.usq.edu.au/item/9z5wx/monitoring-spatial-variation-of-soil-moisture-in-crop-fields-with-em38
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