Natural Resources Research Articles
Use of the electromagnetic-induction meter (EM38) as a tool in managing salinisation
Document Type
Article
Publication Date
11-2012
Journal Title
Hydrogeology Journal
ISSN
ISSN: 1431-2174, eISSN: 1435-0157
Disciplines
Hydrology | Natural Resources and Conservation | Water Resource Management
Abstract
Utilisation of an EM38 electromagnetic-induction meter is a cost-effective method for assessing field salinity and for experiments on the salt tolerance of crops. The EM38 meter can be used to map the distribution and severity of salinity. The instrument must be calibrated for temperature, moisture, texture, and other soil factors, such as the presence of magnetic minerals. The meter can be carried by an operator and readings recorded manually; it can be towed behind an all-terrain vehicle to map in a preset grid; or it can be used randomly with a Global Positioning System and data-logging equipment to map large areas.
In field experiments in Alberta, Canada, the EM38 was used to help assess salt tolerance of 28 species of trees and 28 species of forage and turf grasses. In similar experiments in Western Australia, the usefulness of the EM38 meter was evaluated in helping to predict survival and growth of Eucalyptus globulus and pastures in saline soils. These techniques are now being incorporated into salinity-management strategies.
Recommended Citation
McKenzie, R., George, R., Woods, S. et al. Use of the Electromagnetic-Induction Meter (EM38) as a Tool in Managing Salinisation. HYJO 5, 37–50 (1997). https://doi.org/10.1007/s100400050110
