Soil improvement / Impact assessment / Research projects / Soil fertility / Sandy soils / Water holding capacity / Clay soils / Soil water relations / Soil management / Farming systems / Crop yield / Vegetable crops / Rice / Sorghum / Models / Statistical methods / Cost benefit analysis / Economic analysis / Economic aspects / Thailand

Abadie A.

Andrew Noble

Arlene Inocencio

Baker J. L.

Bourguignon F.

Coryn C. L.S

Land Development Department (LDD)

Matsuo K.

National Statistical Office (NSO)

Noble A. D.

Panichapong S.

Ragland J.

Rathinasamy Maria Saleth

Rosenbaum P. R.

Sawaeng Ruaysoongnern

Yuvaniyama A.

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.bentonite, clay technology, farming system, impact assessment, impact pathway, matching method, Northeast Thailand, regression method,

Research Papers in Economics

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

Crossref

Declining productivity of agricultural soils in Northeast Thailand is a challenge facing land managers and farmers. A program was initiated in 2002 to investigate the potential role of incorporating clay-based materials into degraded soils as a means of enhancing productivity. This research report attempts to provide an ex-post assessment of the field level impact and economic viability of this approach, using the empirically derived estimates of the average income impacts that the application of bentonite or clay technology has generated among farm communities in Northeast Thailand. From an exclusive IWMI perspective, the impact evaluation suggests that the program has a net present value (NPV) of US$0.41 million with a benefit-cost ratio (BCR) of 2.44 for the sample, and a NPV of US$21 million with a BCR of 75 for the region

Saleth, Rathinasamy Maria

Inocencio, Arlene B.

Noble, A.D.

Ruaysoongnern, Sawaeng

CGSpace

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

Inocencio, Arlene

Noble, Andrew D.

Ruaysoongnern, S.

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 NPVof US$99.5 million with a BCR of 317.7 for the larger context of the region

Journal of Development Effectiveness

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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Research Papers in Economics

Crossref

CGSpace

Research Papers in Economics

CGSpace