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Economic gains of improving soil fertility and water holding capacity with clay application: the impact of soil remediation research in northeast Thailand

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  • Saleth, Rathinasamy Maria
  • Inocencio, Arlene
  • Noble, Andrew D.
  • Ruaysoongnern, S.

    (International Water Management Institute
    International Water Management Institute
    International Water Management Institute)

Abstract

Using survey data collected from 250 farmers, this paper evaluates the impact of the Soil Remediation Research Project (SRRP) undertaken by International Water Management Institute (IWMI) in Northeast Thailand during 2002-2005. SRRP has demonstrated and promoted the application of clay as a quick and low-cost means for improving the fertility and water holding capacity of sandy soils. The impact evaluation suggests that the SRRP has a net present value (NPV) of US$0.7 million with a benefit-cost ratio (BCR) of 3.1 for the sample context and an NPV of US$99.5 million with a BCR of 317.7 for the larger context of the region.
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Suggested Citation

  • Saleth, Rathinasamy Maria & Inocencio, Arlene & Noble, Andrew D. & Ruaysoongnern, S., 2009. "Economic gains of improving soil fertility and water holding capacity with clay application: the impact of soil remediation research in northeast Thailand," IWMI Research Reports H042267, International Water Management Institute.
    • Handle: RePEc:iwt:rerpts:h042267
    DOI: 10.3910/2009.130
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