Sander Huisman, an author of the review says, "After recognizing the dominating role of spatial variability at the field scale, it is now time to deal with it. Clearly, the traditional methods cannot detect these variabilities with sufficient resolution and, therefore, many scientists and practitioners are currently searching for alternative techniques. GPR is certainly one of the most promising methods currently under scrutiny".
Of course, there is still a gap between the advances made in the research community and the practical need for straightforward tools to accurately measure water content at high resolution and over large areas. The authors of the study, however, are confident that increased experience and application of GPR will eventually lead to the acceptance of GPR as one of the possible tools to measure field scale variation of soil water content.
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Contact: Sara Uttech
suttech@agronomy.org
608-273-8080
American Society of Agronomy
20-Nov-2003