This publication outlines the soil water monitoring instrument, the EM38, which uses electromagnetic induction to monitor soil water within the root zone. The EM38 provides an efficient means to monitor crop water use and plant available water in the soil profile throughout the growing season.

The EM38 was featured at the CottonInfo Irrigation Technology Tour in February 2015, and this publication was developed for a follow up workshop specifically on the EM38 technology. It outlines what EM38s measure and how they work, plus provides a case study on using EM38s in cotton, using the technology to assess the watering requirements of floodplain vegetation, rapid soil water monitoring using EM38s and more.